{"id":36985,"date":"2026-06-12T03:10:00","date_gmt":"2026-06-12T03:10:00","guid":{"rendered":"https:\/\/dimud.com\/?p=36985"},"modified":"2026-06-08T08:32:13","modified_gmt":"2026-06-08T08:32:13","slug":"san-plastic","status":"publish","type":"post","link":"https:\/\/dimud.com\/ru\/san-plastic\/","title":{"rendered":"SAN Plastic: The Complete Engineering &amp; Injection Molding Guide"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"36985\" class=\"elementor elementor-36985\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-936c9cd e-flex e-con-boxed e-con e-parent\" data-id=\"936c9cd\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6986566 elementor-widget elementor-widget-text-editor\" data-id=\"6986566\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Styrene acrylonitrile sits in a performance window that is genuinely underutilized in precision injection molding programs \u2014 better optical clarity and chemical resistance than GPPS, significantly more rigid and dimensionally stable than LDPE or PP, and less expensive than PC or PMMA, while sharing the processing familiarity of its styrenic cousins. For engineers specifying transparent, chemically resistant, or dimensionally precise components in consumer electronics, medical devices, household appliances, and automotive instrument displays, SAN plastic offers a combination of properties that often makes it the most rational specification choice \u2014 once engineers know it&#8217;s available.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">The gap is usually knowledge, not performance. This guide closes it.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Drawing on Dimud&#8217;s production experience across SAN plastic programs for electronic device panels, medical diagnostic components, automotive gauge lenses, and precision industrial parts, it covers material chemistry, grade selection, process parameters, mold design, industry applications, DFM rules, and compliance requirements \u2014 giving engineers the complete picture needed to evaluate, specify, and successfully manufacture SAN components.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-085abcf e-flex e-con-boxed e-con e-parent\" data-id=\"085abcf\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6a761af elementor-widget elementor-widget-heading\" data-id=\"6a761af\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What Is SAN Plastic?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-652173e elementor-widget elementor-widget-image\" data-id=\"652173e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"900\" height=\"540\" src=\"https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-transparent-pellets.webp\" class=\"attachment-2048x2048 size-2048x2048 wp-image-37080\" alt=\"SAN plastic transparent pellets\" srcset=\"https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-transparent-pellets.webp 900w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-transparent-pellets-400x240.webp 400w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-transparent-pellets-768x461.webp 768w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-transparent-pellets-18x12.webp 18w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c4e059e elementor-widget elementor-widget-text-editor\" data-id=\"c4e059e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic \u2014 styrene acrylonitrile \u2014 is an amorphous thermoplastic copolymer produced by the free-radical copolymerization of styrene (typically 65\u201380% by weight) and acrylonitrile (20\u201335% by weight). The proportions are not arbitrary: the styrene component contributes optical clarity, surface gloss, and the processing characteristics familiar from polystyrene, while the acrylonitrile component delivers chemical resistance, surface hardness, and the thermal stability that pure polystyrene lacks.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">This two-component architecture makes SAN plastic the direct structural foundation of ABS \u2014 acrylonitrile butadiene styrene is produced by polymerizing styrene and acrylonitrile in the presence of a polybutadiene rubber phase. Remove the rubber phase, and what remains is SAN: the rigid, transparent matrix that gives ABS its stiffness, surface quality, and chemical resistance. Understanding this relationship immediately explains SAN&#8217;s performance envelope \u2014 it captures ABS&#8217;s best optical and chemical properties without the opacity introduced by rubber modification.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>What the acrylonitrile content gives SAN over GPPS:<\/strong><\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Chemical resistance to oils, greases, dilute acids, and alcohols \u2014 a weakness that limits GPPS in cleaning-agent and food-contact environments<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Higher surface hardness (Rockwell M scale: 80\u201390 vs 60\u201375 for GPPS)<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Better scratch resistance \u2014 relevant for any component with a visible optical surface<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Marginally higher heat deflection temperature (85\u2013105 \u00b0C vs 75\u201395 \u00b0C for GPPS)<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Reduced tendency to stress-whiten under snap-fit deflection<\/li><\/ul><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>What distinguishes SAN from ABS in applications:<\/strong><\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Full optical transparency \u2014 light transmittance 87\u201390%, comparable to GPPS and approaching PMMA<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Lower haze values (typically &lt; 2%) versus ABS which is inherently opaque<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Higher surface gloss in natural (unpigmented) form<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Slightly lower impact resistance than HI-ABS, which is the material&#8217;s primary limitation<\/li><\/ul><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Where SAN loses to competitors:<\/strong><\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Impact resistance is significantly lower than ABS or PC \u2014 SAN is a brittle polymer at stress concentrations without rubber modification<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">UV stability requires additive packages for outdoor or long-term indoor lighting exposure<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Chemical resistance, while better than GPPS, is inferior to PP or PE for contact with solvents, ketones, and concentrated acids<\/li><\/ul><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">At <a class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/dimud.com\">Dimud<\/a>, SAN plastic programs appear most frequently in two scenarios: as the primary specification for transparent precision components where GPPS&#8217;s chemical susceptibility is disqualifying, and as a cost-effective alternative to PMMA or PC in applications where impact loading is not a primary design requirement.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-34a61a5 e-flex e-con-boxed e-con e-parent\" data-id=\"34a61a5\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-05ebf62 elementor-widget elementor-widget-heading\" data-id=\"05ebf62\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Grade Landscape: Standard, Impact-Modified, and Specialty SAN<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a46798b elementor-widget elementor-widget-text-editor\" data-id=\"a46798b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Standard SAN (General Purpose)<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">The base grade: 70\u201375% styrene, 25\u201330% acrylonitrile, fully amorphous, no rubber modification. Light transmittance 87\u201390%, haze &lt; 2%, natural color water-clear to very slightly amber. Processes similarly to GPPS but with higher melt viscosity due to the polar acrylonitrile units.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Commercial designations include <strong>Lustran\u00ae SAN<\/strong> (INEOS Styrolution), <strong>Tyril\u00ae<\/strong> (Trinseo), <strong>Kostil\u00ae<\/strong> (Versalis), and <strong>Kibisan\u00ae<\/strong> (Chi Mei).<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Standard SAN is the specification starting point at Dimud for transparent housing panels, optical covers, cosmetic instrument components, and food-contact transparent parts.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Impact-Modified SAN (MSAN \/ Rubber-Toughened SAN)<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Standard SAN&#8217;s primary weakness \u2014 notched Izod impact strength of 15\u201325 J\/m \u2014 limits its use in applications with drop risk or mechanical shock loading. Impact-modified SAN incorporates rubber particles (typically polybutadiene or MBS core-shell) at 5\u201315% loading to improve toughness:<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Notched Izod impact: 40\u201380 J\/m (vs 15\u201325 J\/m standard)<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Light transmittance: reduced to 82\u201387% depending on rubber loading and particle morphology<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Haze: increases to 2\u20135%<\/li><\/ul><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Impact-modified SAN occupies a niche between GPPS and HI-ABS \u2014 more impact-resistant than GPPS, more transparent than ABS, less tough than PC. For cosmetic device panels with moderate impact risk, it is frequently the optimal compromise.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Heat-Resistant SAN (HR-SAN)<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Alpha-methylstyrene (AMS) or maleic anhydride (MAH) modified SAN grades raise the heat deflection temperature to 105\u2013120 \u00b0C, enabling use in applications near light sources, near hot-fill packaging processes, or in automotive instrument clusters with elevated thermal exposure. These grades sacrifice some optical clarity (transmittance drops to 83\u201386%) and process more narrowly than standard SAN.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Food-Contact and Medical-Grade SAN<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic is approved for food contact under <a href=\"https:\/\/www.ecfr.gov\/current\/title-21\/chapter-I\/subchapter-B\/part-177\/subpart-B\/section-177.1040\" rel=\"nofollow noopener\" target=\"_blank\">FDA 21 CFR 177.1900<\/a> (styrene-acrylonitrile copolymers) and EU Regulation 10\/2011 when formulated with compliant additives. Medical-grade SAN with USP Class VI certification is available from selected resin suppliers and is used in diagnostic device windows, laboratory consumable covers, and transparent medical packaging components.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Specialty Grades Summary<\/h3><div class=\"overflow-x-auto w-full px-2 mb-6\"><table class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"><thead class=\"text-left\"><tr><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Grade<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Modification<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Key Benefit<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Application<\/th><\/tr><\/thead><tbody><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Standard SAN<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2014<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Optical clarity + chemical resistance<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Device panels, covers, cosmetic parts<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Impact-modified SAN<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Rubber particles<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Toughness + partial transparency<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Appliance panels, device covers<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">HR-SAN (AMS-modified)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Alpha-methylstyrene<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">HDT to 105\u2013120 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Automotive gauge lenses, lighting components<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Food-grade SAN<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Compliant additives<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">FDA\/EU food contact approval<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Food containers, kitchen appliance parts<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Medical-grade SAN<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">USP Class VI<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Biocompatibility<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Diagnostic windows, medical covers<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">UV-stabilized SAN<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">HALS + UV absorbers<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Extended UV resistance<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">POS displays, outdoor-adjacent applications<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ESD-dissipative SAN<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Carbon additives<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Static control<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Electronics handling fixtures<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a083467 e-flex e-con-boxed e-con e-parent\" data-id=\"a083467\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5ffb818 elementor-widget elementor-widget-heading\" data-id=\"5ffb818\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Key Physical and Mechanical Properties<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e8b0042 elementor-widget elementor-widget-image\" data-id=\"e8b0042\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"900\" height=\"540\" src=\"https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-optical-clarity-properties.webp\" class=\"attachment-2048x2048 size-2048x2048 wp-image-37077\" alt=\"SAN plastic optical clarity properties\" srcset=\"https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-optical-clarity-properties.webp 900w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-optical-clarity-properties-400x240.webp 400w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-optical-clarity-properties-768x461.webp 768w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-optical-clarity-properties-18x12.webp 18w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac14ca3 elementor-widget elementor-widget-text-editor\" data-id=\"ac14ca3\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"overflow-x-auto w-full px-2 mb-6\"><table class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"><thead class=\"text-left\"><tr><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Property<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Standard SAN<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Impact-Modified SAN<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">HR-SAN<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Test Standard<\/th><\/tr><\/thead><tbody><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Density<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">1.07\u20131.08 g\/cm\u00b3<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">1.05\u20131.08 g\/cm\u00b3<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">1.07\u20131.09 g\/cm\u00b3<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 1183<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Tensile Strength (yield)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">65\u201385 MPa<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">45\u201365 MPa<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">70\u201390 MPa<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 527<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Flexural Modulus<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">3,500\u20134,000 MPa<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">2,800\u20133,500 MPa<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">3,600\u20134,200 MPa<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 178<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Notched Izod Impact<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">15\u201325 J\/m<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">40\u201380 J\/m<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">12\u201322 J\/m<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 180<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Elongation at Break<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">2\u20134 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">5\u201315 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">2\u20134 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 527<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Heat Deflection Temp<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">85\u2013105 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">78\u201395 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">105\u2013120 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 75 (1.82 MPa)<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Vicat Softening Point<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">100\u2013115 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">90\u2013105 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">115\u2013130 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 306<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Mold Shrinkage<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">0.3\u20130.6 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">0.3\u20130.7 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">0.3\u20130.6 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 294-4<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Water Absorption (24h)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">0.15\u20130.25 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">0.15\u20130.25 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">0.15\u20130.25 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 62<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Light Transmittance<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">87\u201390 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">82\u201387 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">83\u201387 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 13468<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Haze<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">&lt; 2.0 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">2\u20135 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">1.5\u20133.5 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 14782<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Surface Hardness<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Rockwell M 80\u201390<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Rockwell M 65\u201380<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Rockwell M 82\u201392<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">ISO 2039-2<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Dielectric Strength<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">14\u201317 kV\/mm<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">13\u201316 kV\/mm<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">14\u201317 kV\/mm<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">IEC 60243<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Flammability<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">HB<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">HB<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">HB<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">UL 94<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Chemical Resistance<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Good (oils, dilute acids)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Good<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Good<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2014<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Scratch Resistance<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Superior to GPPS and ABS<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Moderate<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Superior<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2014<\/td><\/tr><\/tbody><\/table><\/div><blockquote class=\"ml-2 border-l-4 border-[hsl(var(--border-300)\/0.1)] pl-4 text-text-300\"><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Dimud Engineering Note \u2014 SAN&#8217;s Shrinkage Advantage<\/strong><\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic&#8217;s mold shrinkage of 0.3\u20130.6% is among the lowest of any commodity thermoplastic \u2014 similar to ABS (0.4\u20130.8%) and significantly lower than PP (1.0\u20132.5%) or LDPE (1.5\u20133.0%). In transparent component programs where multi-piece assemblies must align precisely \u2014 gauge clusters, device panel stack-ups, diagnostic instrument windows \u2014 this tight, predictable shrinkage allows Dimud to hold dimensional tolerances of \u00b10.10 mm on critical fitting surfaces without the cavity adjustment cycles that higher-shrinkage materials require. For optical components where the lens or cover must sit flush against a display substrate with &lt; 0.2 mm gap variation, SAN&#8217;s shrinkage behavior is a direct production cost advantage.<\/p><\/blockquote>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9ae999a e-flex e-con-boxed e-con e-parent\" data-id=\"9ae999a\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-38e4408 elementor-widget elementor-widget-heading\" data-id=\"38e4408\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SAN Injection Molding: Process Parameters and Best Practices<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-53c3b03 elementor-widget elementor-widget-text-editor\" data-id=\"53c3b03\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic processes more like ABS than like GPPS \u2014 its polar acrylonitrile units increase melt viscosity relative to pure polystyrene, requiring slightly higher barrel temperatures and injection pressures. The processing window is broad and forgiving, but two areas require specific attention: moisture control (more demanding than PS, though less so than PC) and gate design for optical clarity.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Drying Protocol<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic absorbs moisture at 0.15\u20130.25% over 24 hours \u2014 sufficient to cause silver streaks, surface splay, and reduced optical clarity if the resin is not dried before processing:<\/p><div class=\"overflow-x-auto w-full px-2 mb-6\"><table class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"><thead class=\"text-left\"><tr><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Parameter<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Standard SAN<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Medical \/ Optical-Grade SAN<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Regrind SAN<\/th><\/tr><\/thead><tbody><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Dryer type<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Dehumidifying hopper<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Dehumidifying hopper<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Dehumidifying hopper<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Temperature<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">75\u201385 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">80\u201385 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">75\u201380 \u00b0C<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Duration<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">2\u20134 hours<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">3\u20134 hours<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">2\u20133 hours<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Target moisture<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">&lt; 0.10 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">&lt; 0.05 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">&lt; 0.10 %<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Max regrind ratio<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">20\u201325 %<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">0% (virgin only)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2014<\/td><\/tr><\/tbody><\/table><\/div><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Barrel and Melt Temperature<\/h3><div class=\"overflow-x-auto w-full px-2 mb-6\"><table class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"><thead class=\"text-left\"><tr><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Zone<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Standard SAN<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">HR-SAN<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Notes<\/th><\/tr><\/thead><tbody><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Rear (Feed)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">175\u2013195 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">190\u2013210 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Conservative entry; no cold zones<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Middle (Compression)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">195\u2013220 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">210\u2013235 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Primary melt zone<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Front (Metering)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">210\u2013235 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">225\u2013250 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Final melt temp; clarity target<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Nozzle<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">205\u2013225 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">220\u2013240 \u00b0C<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Open-tip nozzle preferred<\/td><\/tr><\/tbody><\/table><\/div><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Degradation ceiling:<\/strong> SAN degrades above 270\u2013280 \u00b0C with yellowing, reduced molecular weight, and release of volatile acrylonitrile-derived compounds. Barrel temperature must be kept well below this ceiling, and residence time must be minimized on small-shot programs. Yellow discoloration is the primary indicator of thermal degradation \u2014 parts that pass dimensional inspection but show yellow tint must be quarantined for root-cause investigation, as they indicate compromised molecular weight.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Mold Temperature<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Mold temperature for SAN plastic: <strong>40\u201380 \u00b0C<\/strong><\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\"><strong>40\u201355 \u00b0C:<\/strong> Standard structural parts; faster cycle; adequate clarity for non-optical applications.<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\"><strong>55\u201370 \u00b0C:<\/strong> Preferred for transparent SAN panels, optical covers, and cosmetic instrument components. Higher mold temperature improves surface gloss, reduces weld-line visibility, and decreases residual stress (important for chemical resistance \u2014 see Section 7 on SAN vs. GPPS).<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\"><strong>70\u201380 \u00b0C:<\/strong> Maximum useful range; for HR-SAN grades and applications requiring minimum residual stress.<\/li><\/ul><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">For optical-grade SAN programs, Dimud maintains mold temperature at 60\u201370 \u00b0C using precision temperature controllers (\u00b12 \u00b0C stability) as standard equipment \u2014 the same approach applied to ABS optical programs.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Injection Speed and Pressure<\/h3><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Injection pressure: <strong>80\u2013130 MPa<\/strong> (higher than GPPS due to SAN&#8217;s elevated melt viscosity from acrylonitrile content)<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Hold pressure: 50\u201370% of injection pressure<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Back pressure: <strong>5\u201310 MPa<\/strong> \u2014 low; excessive back pressure generates shear heating that causes yellowing<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Injection speed: Moderate \u2014 fast fill causes jetting and gate blush on transparent SAN surfaces; controlled fill is critical for optical part cosmetics<\/li><\/ul><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Common Defects and Corrective Actions<\/h3><div class=\"overflow-x-auto w-full px-2 mb-6\"><table class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"><thead class=\"text-left\"><tr><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Defect<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Root Cause<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Corrective Action<\/th><\/tr><\/thead><tbody><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Silver streaks \/ splay<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Moisture &gt; 0.10%; shear degradation<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Extend drying; reduce back pressure; lower barrel temp<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Yellow tint<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Thermal degradation; long residence time<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Reduce barrel temp; purge machine; rightsize barrel<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Optical haze \/ cloudiness<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Mold temp too low; contamination; moisture<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Raise mold temp to 60\u00b0C+; verify drying<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Gate blush \/ stress marks<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Fill speed too fast; gate too small<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Slow injection at gate; enlarge gate; use fan gate<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Weld lines (visible)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Low melt temp; poor gate position<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Raise melt temp; relocate gate; raise mold temp<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Sink marks<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Thick sections; insufficient hold<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Core out thick areas; increase hold pressure\/time<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Warpage<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Differential cooling; wall thickness variation<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Balance cooling; uniform wall; optimize gate<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Brittle fracture<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Sharp corners; excessive residual stress<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Add corner radii; raise mold temp; anneal parts<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Short shot<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Viscosity too high; insufficient pressure<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Raise barrel temp; increase injection pressure<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Surface scratching<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Handling without protection<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Add protective film; specify anti-scratch grade<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b51fa9c e-flex e-con-boxed e-con e-parent\" data-id=\"b51fa9c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f9e55e9 elementor-widget elementor-widget-heading\" data-id=\"f9e55e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Mold Design Considerations for SAN Plastic Components<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-35bde2f elementor-widget elementor-widget-image\" data-id=\"35bde2f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"900\" height=\"540\" src=\"https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-mold-gate-design.webp\" class=\"attachment-2048x2048 size-2048x2048 wp-image-37082\" alt=\"SAN plastic mold gate design\" srcset=\"https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-mold-gate-design.webp 900w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-mold-gate-design-400x240.webp 400w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-mold-gate-design-768x461.webp 768w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-plastic-mold-gate-design-18x12.webp 18w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a41b84d elementor-widget elementor-widget-text-editor\" data-id=\"a41b84d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic shares mold design requirements with GPPS and ABS, but its optical clarity requirement introduces specific constraints on gate design, steel selection, and surface finishing that go beyond standard structural molding programs.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Gate Design for Optical Clarity<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Gate design is the highest-impact mold engineering decision for transparent SAN parts. An undersized or poorly located gate on an optical SAN cover produces stress marks and flow-induced birefringence that are visible to the end user and cannot be corrected after tool steel is cut.<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\"><strong>Fan gates:<\/strong> First choice for flat SAN panels (display covers, gauge faces, device lenses) \u2014 distribute fill stress across a wide front, minimize gate blush, and reduce birefringence concentration at the gate region.<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\"><strong>Submarine (tunnel) gates:<\/strong> Acceptable for structural SAN parts and non-optical surfaces; avoid for primary cosmetic faces where gate witness marks are unacceptable.<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\"><strong>Hot-runner valve gates:<\/strong> Recommended for high-volume consumer electronics SAN programs \u2014 eliminates cold runner, provides gate location flexibility on cosmetic surfaces, and enables precise gate timing for optical quality control. Dimud specifies hot-runner systems on all multi-cavity SAN optical programs above 8 cavities.<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Gate land: 0.5\u20131.0 mm maximum; extended gate lands increase shear stress and produce visible gate marks on transparent SAN.<\/li><\/ul><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Steel Selection for SAN<\/h3><div class=\"overflow-x-auto w-full px-2 mb-6\"><table class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"><thead class=\"text-left\"><tr><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Steel<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Application<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Notes<\/th><\/tr><\/thead><tbody><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">S136 (polishable stainless)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Optical SAN: lens covers, gauge panels, display windows<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">SPI A1 mirror polish; corrosion-resistant; enables haze &lt; 1.5%<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">718H (pre-hardened stainless)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Medical-grade SAN; transparent cosmetic covers<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Good polishability + corrosion resistance at lower cost than S136<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">P20 (pre-hardened)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Non-optical structural SAN; prototype tooling<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Acceptable for short runs and non-cosmetic parts only<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">H13 (hardened)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">High-volume SAN programs; abrasion-resistant requirement<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Required only for filled or compounded SAN grades<\/td><\/tr><\/tbody><\/table><\/div><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>P20 is not recommended for optical SAN programs.<\/strong> Surface finish on P20 steel degrades faster than S136 under repeated molding of the slightly polar SAN melt \u2014 cavity surface scratches and micro-pit development degrade optical surface quality within 100,000\u2013200,000 shots, producing haze values above specification. S136 stainless maintains SPI A1 polish integrity for 400,000+ shots with scheduled maintenance.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Cooling System Design<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN&#8217;s moderate mold temperature requirement (40\u201380 \u00b0C) is compatible with standard water-cooled tooling, but temperature uniformity is more important than maximum cooling rate:<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Cooling channel pitch: 2.5\u20133\u00d7 channel diameter from cavity wall<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Temperature differential target: \u2264 5 \u00b0C across cavity surface (same standard as ABS optical programs at Dimud)<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">For complex curved SAN optical surfaces: conformal cooling inserts to maintain surface temperature uniformity critical for consistent optical quality across multi-cavity tools<\/li><\/ul><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Ejection System<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic&#8217;s brittleness (elongation at break: 2\u20134%) makes ejection design more critical than for ABS. Ejector pin mark prevention is also a cosmetic priority on transparent parts:<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\"><strong>No ejector pins on optical\/cosmetic surfaces<\/strong> \u2014 stripper ring or sleeve ejection only on transparent SAN parts<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Ejector pins placed in recessed zones on structural SAN parts where witness marks are hidden in assembly<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Minimum 1\u00b0 draft on all polished SAN surfaces; 1.5\u00b0 for textured surfaces<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Ejection force calculation at DFM stage \u2014 SAN&#8217;s high modulus requires higher ejection force than flexible polymers on equivalent geometry<\/li><\/ul><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Venting<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic generates minimal venting-critical gas under normal processing, but high fill pressures require adequate venting to prevent burn marks:<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Vent depth: 0.02\u20130.04 mm<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Vent land: 3\u20135 mm<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Peripheral parting-line venting plus ejector pin clearance venting on all deep features<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Optical-grade SAN programs: vacuum-assisted venting considered on programs requiring haze &lt; 1.5% on thick sections (&gt; 3 mm)<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9c3a2e6 e-flex e-con-boxed e-con e-parent\" data-id=\"9c3a2e6\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-53235b8 elementor-widget elementor-widget-heading\" data-id=\"53235b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Industry Applications<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c8c1994 elementor-widget elementor-widget-text-editor\" data-id=\"c8c1994\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Consumer Electronics<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Consumer electronics is the primary volume application for SAN plastic injection molding \u2014 specifically for transparent, semi-transparent, and cosmetically demanding components where GPPS&#8217;s chemical vulnerability, ABS&#8217;s opacity, and PC&#8217;s cost premium create a gap that SAN fills precisely.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Display cover panels and screen windows (optical-grade SAN):<\/strong> Transparent front panels for household electronics (air purifiers, smart speakers, control panels), display cover glasses for small appliances, and indicator lens panels for consumer devices. SAN plastic provides the combination of transparency (87\u201390% light transmittance), scratch resistance (Rockwell M 80\u201390), and chemical resistance to household cleaning agents that makes it more durable in consumer environments than GPPS.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Refrigerator and dishwasher interior components (food-grade SAN):<\/strong> Inner door panels, crisper box covers, and transparent vegetable drawer fronts in household refrigerators. FDA-approved SAN&#8217;s combination of optical clarity, resistance to food oils and dilute cleaning agents, dimensional stability at refrigerator operating temperatures (\u221220 \u00b0C to +10 \u00b0C), and food-contact compliance makes it the industry-standard material for these components globally.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Appliance control panels and trim rings (standard SAN \/ UV-stabilized SAN):<\/strong> Transparent cosmetic covers over display and control interfaces on washing machines, ovens, and small kitchen appliances. SAN&#8217;s superior scratch resistance over GPPS prevents the surface degradation from daily handling that shortens product aesthetic life.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Point-of-sale display and signage components (UV-stabilized SAN):<\/strong> Transparent display trays, product holders, and retail fixture components that require long-term optical clarity under indoor fluorescent and LED lighting. UV-stabilized SAN maintains clarity and color neutrality significantly longer than standard GPPS under sustained lighting exposure.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Dimud&#8217;s electronics manufacturing plant, operating alongside its mold factory, enables integrated secondary operations on SAN housings \u2014 pad printing, UV coating, assembly \u2014 under a single quality system. For a full overview of our electronics and semiconductor manufacturing capabilities, visit our <a class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/dimud.com\/industries\/electronics\/\">Electronics &amp; Semiconductor industry page<\/a>.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Medical and Diagnostic Devices<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Medical-grade SAN occupies a specific and valuable role in diagnostic device manufacturing: outer windows, inspection covers, and transparent housing panels where optical clarity, chemical compatibility with disinfectants, and biocompatibility must coexist.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Diagnostic test instrument windows and panels (medical-grade SAN):<\/strong> Transparent covers for analyzer instruments, diagnostic readers, and benchtop laboratory equipment. Medical-grade SAN&#8217;s combination of optical clarity, chemical resistance to 70% IPA and quaternary ammonium disinfectants (which ESC-crack PC), and USP Class VI certification addresses multiple requirements that no single alternative polymer satisfies simultaneously.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Specimen inspection covers and diagnostic tray lids (SAN):<\/strong> Transparent covers for PCR plates, reagent trays, and specimen inspection systems. SAN&#8217;s dimensional stability (low shrinkage 0.3\u20130.6%) ensures consistent lid-to-tray gap tolerances across production batches \u2014 critical for automated laboratory systems where lid interference causes system errors.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Medication dispenser housings and blister packaging windows (food\/medical-grade SAN):<\/strong> Transparent viewing windows in medication dispensing equipment and pharmacy automation systems, where chemical resistance to pharmaceutical solvents and cleaning agents combines with optical clarity requirements.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Our <a class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/dimud.com\/industries\/medical\/\">Medical &amp; Healthcare injection molding<\/a> capabilities include dedicated clean production cells, resin lot traceability, and batch certificate of conformance as standard deliverables for SAN medical programs.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Automotive Interior<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic&#8217;s combination of optical clarity, scratch resistance, and dimensional stability positions it for automotive interior applications where transparent or semi-transparent aesthetics are combined with functional requirements.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Instrument cluster gauge lenses (HR-SAN):<\/strong> Heat-resistant SAN grades (HDT 105\u2013120 \u00b0C) are specified for gauge cluster cover lenses and instrument panel decorative windows where continuous exposure to solar radiation and HVAC-adjacent heat requires higher thermal stability than standard SAN. HR-SAN&#8217;s combination of optical clarity (83\u201387% transmittance) and HDT approaching PC at significantly lower material cost makes it a rational alternative in programs where PC&#8217;s full impact performance is not utilized.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Automotive interior trim windows and light-guide elements (standard SAN):<\/strong> Decorative transparent trim inserts, ambient light diffuser panels, and button cap lenses in automotive interior systems. SAN&#8217;s natural scratch resistance reduces the need for hard-coat post-processing that PC requires in contact-intensive interior zones.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>HVAC control panel covers (standard SAN):<\/strong> Transparent or tinted covers over HVAC control displays and touch-input areas in center consoles. SAN&#8217;s resistance to skin oils, cleaning solvents, and conditioning sprays \u2014 all common in vehicle interior environments \u2014 extends cosmetic life beyond what GPPS can sustain.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Industrial and Laboratory Equipment<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Sight glasses and process monitoring windows (standard SAN):<\/strong> Transparent inspection windows in industrial process equipment, chemical storage containers, and laboratory instruments. SAN&#8217;s chemical resistance to dilute acids, oils, and alcohols makes it suitable for industrial viewing applications where GPPS would fail within weeks of chemical contact.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Laboratory plasticware and analytical instrument covers (food\/medical-grade SAN):<\/strong> Centrifuge tube racks, reagent bottle caps, and analytical instrument display covers. SAN&#8217;s combination of optical clarity, autoclave-adjacent (not autoclavable) chemical resistance, and dimensional stability for precision laboratory equipment supports a wide range of laboratory plastic applications.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Test fixture components and assembly jigs (standard SAN):<\/strong> Transparent inspection fixtures and alignment jigs in electronics assembly lines, where visual inspection through the fixture is required without compromising dimensional repeatability. SAN&#8217;s stiffness (flexural modulus 3,500\u20134,000 MPa) and low shrinkage make it a practical transparent alternative to machined acrylic for production-quantity fixtures.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1641709 e-flex e-con-boxed e-con e-parent\" data-id=\"1641709\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-03b4b70 elementor-widget elementor-widget-heading\" data-id=\"03b4b70\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SAN Plastic vs. Competing Transparent Materials<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-df2ac19 elementor-widget elementor-widget-image\" data-id=\"df2ac19\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"540\" src=\"https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-vs-pmma-pc-comparison.webp\" class=\"attachment-2048x2048 size-2048x2048 wp-image-37076\" alt=\"SAN vs PMMA PC comparison\" srcset=\"https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-vs-pmma-pc-comparison.webp 900w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-vs-pmma-pc-comparison-400x240.webp 400w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-vs-pmma-pc-comparison-768x461.webp 768w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/san-vs-pmma-pc-comparison-18x12.webp 18w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-238ec3f elementor-widget elementor-widget-text-editor\" data-id=\"238ec3f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">When engineers are evaluating transparent thermoplastic options, SAN typically competes directly with GPPS, PMMA, and PC. The decision matrix is clearer than it first appears:<\/p><div class=\"overflow-x-auto w-full px-2 mb-6\"><table class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"><thead class=\"text-left\"><tr><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Property \/ Factor<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">SAN<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">GPPS<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">PMMA<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">PC<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">PETG<\/th><\/tr><\/thead><tbody><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Optical Clarity (transmittance)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606 (88\u201390%)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606 (88\u201392%)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2605 (92\u201393%)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606 (88\u201390%)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606 (87\u201390%)<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Chemical Resistance<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2606\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606 (ESC risk)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Scratch Resistance<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2605<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Impact Resistance<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2606\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2606\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2606\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2605<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Heat Resistance (HDT)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606 (85\u2013105 \u00b0C)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2606\u2606\u2606 (75\u201395 \u00b0C)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606 (90\u2013100 \u00b0C)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2605 (130\u2013140 \u00b0C)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2606\u2606\u2606 (65\u201375 \u00b0C)<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Dimensional Stability<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2605<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2605<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">UV Resistance (natural)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2606\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2605<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Processing Ease<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2605<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2605<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2606\u2606<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2605\u2605\u2605\u2605\u2606<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Raw Material Cost<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">$$ Medium-low<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">$ Low<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">$$ Medium<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">$$$ High<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">$$ Medium<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Food\/Medical Compliance<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2713 (certified grades)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2713<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2713<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2713 (BPA question)<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">\u2713<\/td><\/tr><\/tbody><\/table><\/div><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>SAN vs. GPPS:<\/strong> SAN wins on chemical resistance (critical for food-contact and cleaning-agent exposure), scratch resistance, and dimensional stability. GPPS wins on raw material cost (10\u201320% lower than SAN) and slightly better optical clarity in the highest-purity grades. For any transparent component that will encounter household chemicals, food oils, or cleaning solvents, SAN is the rational specification upgrade from GPPS.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>SAN vs. PMMA:<\/strong> PMMA delivers better scratch resistance (inherent surface hardness Rockwell M 95\u2013105 vs SAN&#8217;s 80\u201390), marginally higher optical transmittance, and better UV stability in natural grades. SAN delivers better impact resistance (15\u201325 J\/m vs PMMA&#8217;s 10\u201318 J\/m), slightly better processing ease, and lower material cost. For applications where scratch resistance is the dominant selection criterion, PMMA wins. For applications where processing consistency, cost, and chemical resistance are balanced requirements, SAN is competitive.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>SAN vs. PC:<\/strong> PC is decisive on impact resistance and heat resistance \u2014 there is no argument on these dimensions. SAN wins on cost (40\u201360% lower raw material cost than PC), processing ease, and chemical resistance to disinfectant agents that cause ESC in PC. For non-impact-critical transparent components in medical and laboratory environments where PC&#8217;s ESC susceptibility to common disinfectants is a field-reliability risk, SAN with medical-grade certification is frequently the better engineering choice.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">For a comprehensive view of how these and other materials compare across Dimud&#8217;s full injection molding portfolio, see our <a class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/dimud.com\/materials\/injection-molding-materials\/\">injection molding materials overview<\/a>.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Similarly, if you&#8217;re evaluating structural (opaque) thermoplastics, our detailed guide on <a class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/dimud.com\/a-guide-to-hdpe-plastic-in-injection-molding\/\">HDPE plastic injection molding<\/a> covers the selection logic for high-density polyethylene applications.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cf08edd e-flex e-con-boxed e-con e-parent\" data-id=\"cf08edd\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6a4f214 elementor-widget elementor-widget-heading\" data-id=\"6a4f214\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">DFM Guidelines for SAN Plastic Parts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8b6756f elementor-widget elementor-widget-text-editor\" data-id=\"8b6756f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic&#8217;s brittleness (elongation at break: 2\u20134%) and optical clarity requirements impose DFM rules that are stricter than for tougher polymers. The consequences of sharp corners, thick ribs, or inadequate gate design are more visible and more structurally significant in SAN than in ABS or PP programs.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Dimud&#8217;s <a class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/dimud.com\/services\/dfm-design\/\">Product Design &amp; DFM service<\/a> reviews every SAN program before tooling commitment \u2014 covering grade recommendation, corner radius audit, wall thickness analysis, gate position optimization, and optical specification validation.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Wall Thickness<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Recommended range: <strong>1.0\u20134.0 mm<\/strong> for structural SAN; <strong>0.8\u20132.0 mm<\/strong> for optical thin-wall panels with standard grades.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Uniform wall thickness is critical \u2014 differential shrinkage in thick\/thin transitions produces residual stress that is visible as birefringence in transparent SAN parts and as a fracture initiation site under mechanical loading. Where transitions are unavoidable, taper over minimum 3\u00d7 the thickness change on the non-optical face.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Corner Radii \u2014 The Most Critical DFM Rule for SAN<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">Sharp internal corners are the primary failure mode in injection-molded SAN plastic. The material&#8217;s brittleness (elongation at break 2\u20134%) means that stress concentration at zero-radius corners causes crack initiation under impact, snap-fit engagement, or drop loading at stress levels far below those that would cause visible deformation in ABS or PP.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Minimum internal corner radius: 0.5 mm. Recommended: 1.0 mm or 25\u201350% of wall thickness.<\/strong><\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">For transparent SAN parts, corner radii serve a dual function: structural stress relief and optical quality. Sharp corners at interfaces between transparent SAN walls produce visible dark lines in transmitted light \u2014 a cosmetic defect that becomes apparent when the part is installed in a backlit application.<\/p><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Ribs and Bosses<\/h3><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Rib thickness: <strong>50\u201360% of nominal wall<\/strong> \u2014 strictly enforced in SAN; thick ribs produce sink marks that are highly visible on transparent surfaces from the opposite side<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Rib height: maximum 3\u00d7 nominal wall; gusset support on taller ribs<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Boss outer diameter: maximum 2\u00d7 nominal wall; cored bosses on sections deeper than 6 mm<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">All rib-to-wall and boss-to-wall intersections: filletted (minimum 0.5 mm; 1.0 mm preferred)<\/li><\/ul><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Draft Angles<\/h3><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Standard surfaces: <strong>0.5\u00b0\u20131.0\u00b0<\/strong> per side minimum<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Polished optical surfaces (SPI A1\/A2): <strong>1.0\u00b0\u20131.5\u00b0<\/strong> per side \u2014 higher draft required for polished SAN to overcome vacuum adhesion between high-polish cavity and cooling part<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Textured surfaces: add 1\u00b0 per 0.025 mm texture depth<\/li><\/ul><h3 class=\"text-text-100 mt-2 -mb-1 text-base font-bold\">Achievable Tolerances<\/h3><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic&#8217;s low shrinkage enables competitive dimensional tolerances for a commodity-accessible material:<\/p><ul class=\"[li_&amp;]:mb-0 [li_&amp;]:mt-1 [li_&amp;]:gap-1 [&amp;:not(:last-child)_ul]:pb-1 [&amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Standard achievable: <strong>\u00b10.10\u20130.15 mm<\/strong> on controlled critical dimensions<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">Optical-grade critical dimensions: <strong>\u00b10.05\u20130.10 mm<\/strong> achievable with Moldflow-pre-validated tooling and process SPC<\/li><li class=\"font-claude-response-body whitespace-normal break-words pl-2\">For transparent assembly stack-ups (lens-to-housing registration, display-to-panel gap): Dimud conducts tolerance stack-up analysis before tool design freeze as a standard DFM deliverable<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ee5a675 e-flex e-con-boxed e-con e-parent\" data-id=\"ee5a675\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39f8063 elementor-widget elementor-widget-heading\" data-id=\"39f8063\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Dimud's SAN Plastic Injection Molding Capabilities<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ba6c6b elementor-widget elementor-widget-image\" data-id=\"8ba6c6b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"540\" src=\"https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/dimud-san-injection-molding-production.webp\" class=\"attachment-2048x2048 size-2048x2048 wp-image-37081\" alt=\"Dimud SAN injection molding production\" srcset=\"https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/dimud-san-injection-molding-production.webp 900w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/dimud-san-injection-molding-production-400x240.webp 400w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/dimud-san-injection-molding-production-768x461.webp 768w, https:\/\/dimud.com\/wp-content\/uploads\/2026\/06\/dimud-san-injection-molding-production-18x12.webp 18w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a0079e2 elementor-widget elementor-widget-text-editor\" data-id=\"a0079e2\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><a class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\" href=\"https:\/\/dimud.com\">Dimud<\/a> provides SAN plastic injection molding as part of a vertically integrated manufacturing system \u2014 three coordinated plants covering mold development, CNC machining, and electronics assembly \u2014 serving customers in Europe, North America, and the Middle East.<\/p><div class=\"overflow-x-auto w-full px-2 mb-6\"><table class=\"min-w-full border-collapse text-sm leading-[1.7] whitespace-normal\"><thead class=\"text-left\"><tr><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Service Stage<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Dimud Capability<\/th><th class=\"text-text-100 border-b-0.5 border-[hsl(var(--border-300)\/0.6)] py-2 pr-4 align-top font-bold\" scope=\"col\">Customer Benefit<\/th><\/tr><\/thead><tbody><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">DFM &amp; Grade Review<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Grade recommendation (SAN vs GPPS vs PMMA vs PC); corner radius audit; optical spec validation; shrinkage prediction<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Eliminate the most common transparent material specification errors<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Rapid Prototyping<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">SLA\/SLS optical simulation models + aluminum soft tools in standard or food-grade SAN<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Optical and functional samples in 10\u201315 working days<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Mold Development<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">S136\/718H stainless for optical programs; hot-runner valve gate; Moldflow optical simulation; 1\u2013128 cavities<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Production-ready transparent SAN tooling; predictable haze and transmittance<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Production Molding<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">50T\u20131,600T machines; precision temperature controllers 40\u201380 \u00b0C; clean cells for medical\/food-grade SAN<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Consistent optical quality from pilot to volume<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Secondary Operations<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">UV coating coordination, pad printing, ultrasonic welding, assembly<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Complete optical and functional sub-assemblies<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Quality Documentation<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">PPAP, CoC, haze\/transmittance reports, CMM, RoHS\/REACH declarations, resin lot traceability<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Audit-ready for consumer electronics, medical, automotive OEMs<\/td><\/tr><tr><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Supply Chain<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">INEOS Styrolution\/Trinseo\/Chi Mei resin sourcing; incoming lot verification; DDP logistics<\/td><td class=\"border-b-0.5 border-[hsl(var(--border-300)\/0.3)] py-2 pr-4 align-top\">Traceable resin from producer to finished part<\/td><\/tr><\/tbody><\/table><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5d7c89a e-flex e-con-boxed e-con e-parent\" data-id=\"5d7c89a\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b0da778 elementor-widget elementor-widget-heading\" data-id=\"b0da778\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"> Frequently Asked Questions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f79aa60 elementor-widget elementor-widget-elementskit-accordion\" data-id=\"f79aa60\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"elementskit-accordion.default\">\n\t\t\t\t\t<div class=\"ekit-wid-con\" >\n        <div class=\"elementskit-accordion accoedion-primary\" id=\"accordion-6a2c80e88257e\">\n\n            \n                <div class=\"elementskit-card active\">\n                    <div class=\"elementskit-card-header\" id=\"primaryHeading-0-f79aa60\">\n                        <a href=\"#collapse-b5dbdab6a2c80e88257e\" class=\"ekit-accordion--toggler elementskit-btn-link collapsed\" data-ekit-toggle=\"collapse\" data-target=\"#Collapse-b5dbdab6a2c80e88257e\" aria-expanded=\"true\" aria-controls=\"Collapse-b5dbdab6a2c80e88257e\">\n                            \n                            <span class=\"ekit-accordion-title\">What is the difference between SAN plastic and ABS?<\/span>\n\n                            \n                                <div class=\"ekit_accordion_icon_group\">\n                                    <div class=\"ekit_accordion_normal_icon\">\n                                        <!-- Normal Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"icon icon-down-arrow1\"><\/i>                                    <\/div>\n\n                                    <div class=\"ekit_accordion_active_icon\">\n                                        <!-- Active Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"icon icon-up-arrow\"><\/i>                                    <\/div>\n                                <\/div>\n\n                            \n                                                    <\/a>\n                    <\/div>\n\n                    <div id=\"Collapse-b5dbdab6a2c80e88257e\" class=\" show collapse\" aria-labelledby=\"primaryHeading-0-f79aa60\" data-parent=\"#accordion-6a2c80e88257e\">\n\n                        <div class=\"elementskit-card-body ekit-accordion--content\">\n                            <p>SAN (styrene acrylonitrile) is the rigid, transparent matrix polymer in ABS \u2014 acrylonitrile butadiene styrene is produced by incorporating polybutadiene rubber particles into an SAN matrix. Remove the rubber phase, and you have SAN: optically transparent, more rigid, more scratch-resistant, and less impact-resistant than ABS. The practical consequence: where you need a transparent version of ABS-type rigidity and chemical resistance, SAN is the specification. Where you need the same performance in an opaque part that must survive impact or drop loading, ABS is the correct material. Dimud processes both materials and can advise on the selection boundary for specific program requirements.<\/p>                        <\/div>\n\n                    <\/div>\n\n                <\/div><!-- .elementskit-card END -->\n\n                \n                <div class=\"elementskit-card \">\n                    <div class=\"elementskit-card-header\" id=\"primaryHeading-1-f79aa60\">\n                        <a href=\"#collapse-331caee6a2c80e88257e\" class=\"ekit-accordion--toggler elementskit-btn-link collapsed\" data-ekit-toggle=\"collapse\" data-target=\"#Collapse-331caee6a2c80e88257e\" aria-expanded=\"false\" aria-controls=\"Collapse-331caee6a2c80e88257e\">\n                            \n                            <span class=\"ekit-accordion-title\">Can SAN plastic be used for food contact applications?<\/span>\n\n                            \n                                <div class=\"ekit_accordion_icon_group\">\n                                    <div class=\"ekit_accordion_normal_icon\">\n                                        <!-- Normal Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"icon icon-down-arrow1\"><\/i>                                    <\/div>\n\n                                    <div class=\"ekit_accordion_active_icon\">\n                                        <!-- Active Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"icon icon-up-arrow\"><\/i>                                    <\/div>\n                                <\/div>\n\n                            \n                                                    <\/a>\n                    <\/div>\n\n                    <div id=\"Collapse-331caee6a2c80e88257e\" class=\" collapse\" aria-labelledby=\"primaryHeading-1-f79aa60\" data-parent=\"#accordion-6a2c80e88257e\">\n\n                        <div class=\"elementskit-card-body ekit-accordion--content\">\n                            <p>Yes \u2014 food-grade SAN certified to FDA 21 CFR 177.1900 and EU Regulation 10\/2011 is commercially available and widely used in food-contact applications including refrigerator interior components, food storage container covers, and kitchen appliance transparent panels. The key requirements are: virgin resin only, compliant additive systems, and residual acrylonitrile monomer below 5 ppm. Dimud provides full material certification documentation for all food-grade SAN programs as a standard deliverable.<\/p>                        <\/div>\n\n                    <\/div>\n\n                <\/div><!-- .elementskit-card END -->\n\n                \n                <div class=\"elementskit-card \">\n                    <div class=\"elementskit-card-header\" id=\"primaryHeading-2-f79aa60\">\n                        <a href=\"#collapse-f7d634e6a2c80e88257e\" class=\"ekit-accordion--toggler elementskit-btn-link collapsed\" data-ekit-toggle=\"collapse\" data-target=\"#Collapse-f7d634e6a2c80e88257e\" aria-expanded=\"false\" aria-controls=\"Collapse-f7d634e6a2c80e88257e\">\n                            \n                            <span class=\"ekit-accordion-title\">How does SAN&#039;s chemical resistance compare to GPPS?<\/span>\n\n                            \n                                <div class=\"ekit_accordion_icon_group\">\n                                    <div class=\"ekit_accordion_normal_icon\">\n                                        <!-- Normal Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"icon icon-down-arrow1\"><\/i>                                    <\/div>\n\n                                    <div class=\"ekit_accordion_active_icon\">\n                                        <!-- Active Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"icon icon-up-arrow\"><\/i>                                    <\/div>\n                                <\/div>\n\n                            \n                                                    <\/a>\n                    <\/div>\n\n                    <div id=\"Collapse-f7d634e6a2c80e88257e\" class=\" collapse\" aria-labelledby=\"primaryHeading-2-f79aa60\" data-parent=\"#accordion-6a2c80e88257e\">\n\n                        <div class=\"elementskit-card-body ekit-accordion--content\">\n                            <p>SAN plastic's acrylonitrile content provides meaningful chemical resistance improvement over GPPS. GPPS dissolves or crazes rapidly in contact with household cleaning agents containing alcohols, ether-based solvents, and some surfactant systems. SAN resists short-term contact with 70% IPA, dilute detergents, food oils, and mild acids \u2014 making it suitable for applications where GPPS fails within weeks of use. SAN is not resistant to concentrated aromatic solvents (toluene, MEK) or strong oxidizing acids \u2014 for these environments, PP or PE is the appropriate selection. Dimud's DFM review for transparent applications includes a chemical contact audit to verify SAN's suitability before tooling commitment.<\/p>                        <\/div>\n\n                    <\/div>\n\n                <\/div><!-- .elementskit-card END -->\n\n                \n                <div class=\"elementskit-card \">\n                    <div class=\"elementskit-card-header\" id=\"primaryHeading-3-f79aa60\">\n                        <a href=\"#collapse-5066ae86a2c80e88257e\" class=\"ekit-accordion--toggler elementskit-btn-link collapsed\" data-ekit-toggle=\"collapse\" data-target=\"#Collapse-5066ae86a2c80e88257e\" aria-expanded=\"false\" aria-controls=\"Collapse-5066ae86a2c80e88257e\">\n                            \n                            <span class=\"ekit-accordion-title\">Is SAN plastic suitable for medical sterilization?<\/span>\n\n                            \n                                <div class=\"ekit_accordion_icon_group\">\n                                    <div class=\"ekit_accordion_normal_icon\">\n                                        <!-- Normal Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"icon icon-down-arrow1\"><\/i>                                    <\/div>\n\n                                    <div class=\"ekit_accordion_active_icon\">\n                                        <!-- Active Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"icon icon-up-arrow\"><\/i>                                    <\/div>\n                                <\/div>\n\n                            \n                                                    <\/a>\n                    <\/div>\n\n                    <div id=\"Collapse-5066ae86a2c80e88257e\" class=\" collapse\" aria-labelledby=\"primaryHeading-3-f79aa60\" data-parent=\"#accordion-6a2c80e88257e\">\n\n                        <div class=\"elementskit-card-body ekit-accordion--content\">\n                            <p>SAN plastic is compatible with ethylene oxide (EO) sterilization and low-dose gamma radiation (up to approximately 15\u201320 kGy before yellowing becomes visible in standard grades; gamma-stabilized grades extend this range). It is not suitable for steam autoclaving \u2014 SAN's heat deflection temperature (85\u2013105 \u00b0C for standard grades) is insufficient for 121 \u00b0C autoclave conditions. For device components requiring steam sterilization, polysulfone (PSU) or PEEK are the standard alternatives. For EO-sterilized single-use devices and medical packaging, medical-grade SAN is a cost-effective and biocompatible specification.<\/p>                        <\/div>\n\n                    <\/div>\n\n                <\/div><!-- .elementskit-card END -->\n\n                \n                <div class=\"elementskit-card \">\n                    <div class=\"elementskit-card-header\" id=\"primaryHeading-4-f79aa60\">\n                        <a href=\"#collapse-540fa5c6a2c80e88257e\" class=\"ekit-accordion--toggler elementskit-btn-link collapsed\" data-ekit-toggle=\"collapse\" data-target=\"#Collapse-540fa5c6a2c80e88257e\" aria-expanded=\"false\" aria-controls=\"Collapse-540fa5c6a2c80e88257e\">\n                            \n                            <span class=\"ekit-accordion-title\">What tool life should I expect from a SAN injection mold?<\/span>\n\n                            \n                                <div class=\"ekit_accordion_icon_group\">\n                                    <div class=\"ekit_accordion_normal_icon\">\n                                        <!-- Normal Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"icon icon-down-arrow1\"><\/i>                                    <\/div>\n\n                                    <div class=\"ekit_accordion_active_icon\">\n                                        <!-- Active Icon -->\n\t\t\t\t\t\t\t\t\t\t<i class=\"icon icon-up-arrow\"><\/i>                                    <\/div>\n                                <\/div>\n\n                            \n                                                    <\/a>\n                    <\/div>\n\n                    <div id=\"Collapse-540fa5c6a2c80e88257e\" class=\" collapse\" aria-labelledby=\"primaryHeading-4-f79aa60\" data-parent=\"#accordion-6a2c80e88257e\">\n\n                        <div class=\"elementskit-card-body ekit-accordion--content\">\n                            <p>For standard SAN programs in S136 stainless steel with polished optical cavity: <strong>400,000\u2013600,000 shots<\/strong> with scheduled cavity repolishing at 100,000\u2013150,000 shot intervals. For non-optical structural SAN in P20 pre-hardened steel: <strong>300,000\u2013500,000 shots<\/strong> with standard maintenance. All Dimud SAN tooling contracts include guaranteed minimum shot-life commitments with replaceable gate insert design for high-volume programs, and scheduled cavity maintenance protocols documented in the tool maintenance record.<\/p>                        <\/div>\n\n                    <\/div>\n\n                <\/div><!-- .elementskit-card END -->\n\n                                                        <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the difference between SAN plastic and ABS?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>SAN (styrene acrylonitrile) is the rigid, transparent matrix polymer in ABS \u2014 acrylonitrile butadiene styrene is produced by incorporating polybutadiene rubber particles into an SAN matrix. Remove the rubber phase, and you have SAN: optically transparent, more rigid, more scratch-resistant, and less impact-resistant than ABS. The practical consequence: where you need a transparent version of ABS-type rigidity and chemical resistance, SAN is the specification. Where you need the same performance in an opaque part that must survive impact or drop loading, ABS is the correct material. Dimud processes both materials and can advise on the selection boundary for specific program requirements.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"Can SAN plastic be used for food contact applications?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Yes \u2014 food-grade SAN certified to FDA 21 CFR 177.1900 and EU Regulation 10\/2011 is commercially available and widely used in food-contact applications including refrigerator interior components, food storage container covers, and kitchen appliance transparent panels. The key requirements are: virgin resin only, compliant additive systems, and residual acrylonitrile monomer below 5 ppm. Dimud provides full material certification documentation for all food-grade SAN programs as a standard deliverable.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"How does SAN&#039;s chemical resistance compare to GPPS?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>SAN plastic's acrylonitrile content provides meaningful chemical resistance improvement over GPPS. GPPS dissolves or crazes rapidly in contact with household cleaning agents containing alcohols, ether-based solvents, and some surfactant systems. SAN resists short-term contact with 70% IPA, dilute detergents, food oils, and mild acids \u2014 making it suitable for applications where GPPS fails within weeks of use. SAN is not resistant to concentrated aromatic solvents (toluene, MEK) or strong oxidizing acids \u2014 for these environments, PP or PE is the appropriate selection. Dimud's DFM review for transparent applications includes a chemical contact audit to verify SAN's suitability before tooling commitment.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"Is SAN plastic suitable for medical sterilization?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>SAN plastic is compatible with ethylene oxide (EO) sterilization and low-dose gamma radiation (up to approximately 15\u201320 kGy before yellowing becomes visible in standard grades; gamma-stabilized grades extend this range). It is not suitable for steam autoclaving \u2014 SAN's heat deflection temperature (85\u2013105 \u00b0C for standard grades) is insufficient for 121 \u00b0C autoclave conditions. For device components requiring steam sterilization, polysulfone (PSU) or PEEK are the standard alternatives. For EO-sterilized single-use devices and medical packaging, medical-grade SAN is a cost-effective and biocompatible specification.<\/p>\"}},{\"@type\":\"Question\",\"name\":\"What tool life should I expect from a SAN injection mold?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>For standard SAN programs in S136 stainless steel with polished optical cavity: <strong>400,000\u2013600,000 shots<\/strong> with scheduled cavity repolishing at 100,000\u2013150,000 shot intervals. For non-optical structural SAN in P20 pre-hardened steel: <strong>300,000\u2013500,000 shots<\/strong> with standard maintenance. All Dimud SAN tooling contracts include guaranteed minimum shot-life commitments with replaceable gate insert design for high-volume programs, and scheduled cavity maintenance protocols documented in the tool maintenance record.<\/p>\"}}]}<\/script>\n                                <\/div>\n    <\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7a5cb4b e-flex e-con-boxed e-con e-parent\" data-id=\"7a5cb4b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false,&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f649259 elementor-widget elementor-widget-heading\" data-id=\"f649259\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Conclusion<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3ee7538 elementor-widget elementor-widget-text-editor\" data-id=\"3ee7538\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">SAN plastic is one of injection molding&#8217;s most underutilized materials \u2014 not because it lacks the performance to earn its specification, but because it exists in the shadow of its more famous relatives: GPPS on one side, ABS on the other. Engineers who know the material well reach for it consistently in transparent, chemically demanding, and dimensionally precise applications where GPPS fails chemically, ABS fails optically, and PC or PMMA impose cost or processing complexity that the application doesn&#8217;t justify.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\">The performance case is clear: better chemical resistance than GPPS, better optical clarity than ABS, better scratch resistance than PC at lower cost, and food\/medical compliance available in certified grades. The engineering challenge is modest: respect the brittleness by designing with adequate corner radii and avoiding impact-critical applications without rubber modification, control moisture before processing, and use appropriate tool steel and gate design for optical programs.<\/p><p class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"><strong>Dimud<\/strong> brings the material knowledge, tooling precision, and process discipline to deliver SAN programs correctly \u2014 from DFM review through T1 optical qualification and into volume production \u2014 for customers who need transparent, chemically resistant, precision-molded components and cannot afford the rework cycles of a supplier learning curve.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Styrene acrylonitrile sits in a performance window that is genuinely underutilized in precision injection molding programs \u2014 better optical clarity and chemical resistance than GPPS, significantly more rigid and dimensionally stable than LDPE or PP, and less expensive than PC or PMMA, while sharing the processing familiarity of its styrenic cousins. For engineers specifying transparent, [&hellip;]<\/p>\n","protected":false},"author":28,"featured_media":37076,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[116,97],"tags":[],"class_list":["post-36985","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials","category-guide"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/posts\/36985","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/users\/28"}],"replies":[{"embeddable":true,"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/comments?post=36985"}],"version-history":[{"count":17,"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/posts\/36985\/revisions"}],"predecessor-version":[{"id":37086,"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/posts\/36985\/revisions\/37086"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/media\/37076"}],"wp:attachment":[{"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/media?parent=36985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/categories?post=36985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dimud.com\/ru\/wp-json\/wp\/v2\/tags?post=36985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}