{"id":2591,"date":"2026-07-09T22:54:14","date_gmt":"2026-07-09T14:54:14","guid":{"rendered":"https:\/\/www.xsd-precision.com\/zinc-alloy-die-casting-technical-specification\/"},"modified":"2026-08-01T22:24:51","modified_gmt":"2026-08-01T14:24:51","slug":"zinc-alloy-die-casting-technical-specification","status":"publish","type":"post","link":"https:\/\/www.xsd-precision.com\/zh\/zinc-alloy-die-casting-technical-specification\/","title":{"rendered":"Zinc Alloy Die Casting Technical Specification: GB\/T 13821-2023 and GB\/T 13818-2024"},"content":{"rendered":"<article id=\"xsd-standard-resource-article\" class=\"xsd-resource-article xsd-resource-article--engineering-guide\" lang=\"zh-CN\" data-xsd-resource-id=\"XSD-RESOURCE-2591\" data-xsd-resource-version=\"v1.0\" data-xsd-resource-language=\"zh-CN\" data-xsd-article-format=\"standard-v1\" data-xsd-seo-title=\"Zinc Alloy Die Casting Technical Specification: GB\/T 13821-2023 and GB\/T 13818-2024 | XSD Precision\" data-xsd-seo-description=\"XSD Precision engineering resource for Zinc Alloy Die Casting Technical Specification GB\/T 13821-2023 and GB\/T 13818-2024, covering TPMS buyer checks, validation points,.\"><style>#xsd-standard-resource-article,#xsd-standard-resource-article *{box-sizing:border-box;letter-spacing:0;overflow-wrap:anywhere}html body:not(.wp-admin) .entry-content:has(#xsd-standard-resource-article),html body:not(.wp-admin) .wp-block-post-content:has(#xsd-standard-resource-article){max-width:none!important;width:100%!important;margin:0!important;padding:0!important}#xsd-standard-resource-article{width:min(1120px,calc(100vw - 40px));margin:0 auto 72px;padding:28px 0 0;color:#172231;font-family:Inter,\"Noto Sans SC\",\"Microsoft YaHei\",Arial,sans-serif}#xsd-standard-resource-article .xsd-guide-hero,#xsd-standard-resource-article .xsd-guide-section{border:1px solid #d9e2ec;background:#fff;padding:26px 28px}#xsd-standard-resource-article .xsd-guide-hero{border-top:4px solid #d71920}#xsd-standard-resource-article .xsd-guide-section{margin-top:22px}#xsd-standard-resource-article .xsd-guide-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}#xsd-standard-resource-article .xsd-guide-meta span{padding:5px 9px;border:1px solid #d9e2ec;background:#f6f8fa;color:#465668;font-size:12px;font-weight:800}#xsd-standard-resource-article h1{margin:0;color:#101820;font-size:36px;line-height:1.18;font-weight:900}#xsd-standard-resource-article h2{margin:0 0 14px;color:#101820;font-size:24px;line-height:1.3}#xsd-standard-resource-article h3{margin:18px 0 10px;color:#172231;font-size:18px;line-height:1.35}#xsd-standard-resource-article p,#xsd-standard-resource-article li{color:#27384a;font-size:15px;line-height:1.75}#xsd-standard-resource-article .xsd-guide-lead{max-width:920px;font-size:16px;font-weight:600}#xsd-standard-resource-article .xsd-guide-toc{margin-top:18px;padding:15px 18px;border-left:3px solid #205f9f;background:#f4f7fa}#xsd-standard-resource-article .xsd-guide-toc nav{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:8px}#xsd-standard-resource-article a{color:#205f9f}#xsd-standard-resource-article .xsd-guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}#xsd-standard-resource-article .xsd-guide-panel{padding:16px;border-left:3px solid #8094a8;background:#f7f9fb}#xsd-standard-resource-article .xsd-guide-table-wrap{overflow-x:auto;border:1px solid #d9e2ec;margin-top:12px}#xsd-standard-resource-article table{width:100%;min-width:720px;border-collapse:collapse}#xsd-standard-resource-article th,#xsd-standard-resource-article td{padding:12px 14px;border-top:1px solid #e2e9ef;text-align:left;vertical-align:top}#xsd-standard-resource-article th{background:#edf2f6}#xsd-standard-resource-article img,#xsd-standard-resource-article video,#xsd-standard-resource-article iframe{max-width:100%;height:auto}#xsd-standard-resource-article pre,#xsd-standard-resource-article code{white-space:pre-wrap;overflow-wrap:anywhere}#xsd-standard-resource-article .xsd-guide-conclusion{border-left:4px solid #d71920;background:#f8fafc}#xsd-standard-resource-article .xsd-guide-actions{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-top:22px;padding:18px 20px;border:1px solid #d5e0e8;background:#eef3f7}#xsd-standard-resource-article .xsd-guide-actions a{padding:10px 14px;background:#205f9f;color:#fff;font-weight:850;text-decoration:none}@media(max-width:820px){#xsd-standard-resource-article{width:calc(100vw - 28px);padding-top:16px}#xsd-standard-resource-article .xsd-guide-hero,#xsd-standard-resource-article .xsd-guide-section{padding:20px 16px}#xsd-standard-resource-article h1{font-size:28px}#xsd-standard-resource-article .xsd-guide-grid{grid-template-columns:1fr}#xsd-standard-resource-article .xsd-guide-actions{align-items:stretch;flex-direction:column}#xsd-standard-resource-article .xsd-guide-actions a{width:100%;text-align:center}}<\/style><header class=\"xsd-guide-hero\"><div class=\"xsd-guide-meta\"><span>XSD-RESOURCE-2591<\/span><span>v1.0<\/span><span>\u66f4\u65b0\u65e5\u671f: 2026-08-01<\/span><span>\u5de5\u7a0b\u8d44\u6e90<\/span><span>zh-CN<\/span><\/div><h1>Zinc Alloy Die Casting Technical Specification: GB\/T 13821-2023 and GB\/T 13818-2024<\/h1><p class=\"xsd-guide-lead\">XSD Precision engineering resource for Zinc Alloy Die Casting Technical Specification GB\/T 13821-2023 and GB\/T 13818-2024, covering TPMS buyer checks, validation points,.<\/p><div class=\"xsd-guide-toc\"><strong>\u672c\u6587\u5185\u5bb9<\/strong><nav><a href=\"#details-1\">Material Specification<\/a><a href=\"#details-5\">Melting Process Control<\/a><a href=\"#details-6\">Die Casting Process Window<\/a><a href=\"#details-7\">Quality Inspection Specification<\/a><a href=\"#details-8\">Application Requirements<\/a><a href=\"#details-9\">Management Priorities After the Standard Upgrade<\/a><a href=\"#details-10\">Need zinc alloy die casting project review or quality documentation support?<\/a><\/nav><\/div><\/header><section id=\"overview\" class=\"xsd-guide-section\"><h2>\u4e13\u4e1a\u5224\u65ad<\/h2><div class=\"xsd-guide-grid\"><div class=\"xsd-guide-panel\"><b>XSD Precision<\/b><p>XSD Precision \u4ee5\u54c1\u724c\u5546\u3001\u670d\u52a1\u5546\u3001\u65b9\u6848\u63d0\u4f9b\u5546\u548c\u95ee\u9898\u89e3\u51b3\u4e13\u5bb6\u7684\u8eab\u4efd\uff0c\u4e3a TPMS \u4e0e\u6c7d\u8f66\u7cbe\u5bc6\u5de5\u7a0b\u9879\u76ee\u63d0\u4f9b\u4ece\u9700\u6c42\u8bc4\u5ba1\u3001\u5de5\u7a0b\u9a8c\u8bc1\u5230\u4ea4\u4ed8\u51c6\u5907\u7684\u4e13\u4e1a\u652f\u6301\u3002<\/p><\/div><div class=\"xsd-guide-panel\"><b>\u9002\u7528\u8fb9\u754c<\/b><p>XSD Precision engineering resource for Zinc Alloy Die Casting Technical Specification GB\/T 13821-2023 and GB\/T 13818-2024, covering TPMS buyer checks, validation points,.<\/p><\/div><\/div><\/section><section id=\"details-1\" class=\"xsd-guide-section\"><h2>Material Specification<\/h2><p>Material control should focus on alloy grade, controlled elements, impurity limits and melting stability. Composition affects strength, fluidity, aging deformation, corrosion behavior and long-term reliability.<\/p><ul><li>Common alloy grades include ZA3, ZA8 and ZA12; ZA8 aluminum content is typically 7.5%-8.5%, while ZA12 is typically 10.5%-12.0%.<\/li><li>Aluminum affects strength and fluidity; ZA3 may use 3.8%-4.3%, while ZA8 may use 7.5%-8.5%.<\/li><li>Copper may be controlled around 0.7%-1.1%; excessive copper increases brittleness risk.<\/li><li>Magnesium may be controlled around 0.035%-0.06% to reduce intergranular corrosion, but excessive magnesium can increase hot cracking risk.<\/li><li>Lead should be controlled at &lt;=0.003% and cadmium at &lt;=0.001% to reduce aging deformation, cracking and compliance risks.<\/li><\/ul><\/section><section id=\"details-5\" class=\"xsd-guide-section\"><h2>Melting Process Control<\/h2><p>A stable melting window is a prerequisite for zinc alloy die casting quality. Excessive temperature can accelerate iron crucible corrosion, introduce iron into the alloy and create hard particles that increase mold wear and surface defects.<\/p><ul><li>Initial melting temperature can be controlled at 435-440 deg C.<\/li><li>After complete melting, holding temperature can be reduced to 420-430 deg C to reduce aluminum and magnesium burning loss and zinc dross.<\/li><li>When temperature exceeds 450 deg C, watch for iron contamination, hard particles and mold wear.<\/li><li>Inert gas protection or vacuum melting is recommended to reduce hydrogen absorption and internal porosity.<\/li><\/ul><\/section><section id=\"details-6\" class=\"xsd-guide-section\"><h2>Die Casting Process Window<\/h2><p>The process window should cover injection pressure, filling time, mold temperature, release agent, vacuum assistance and feeding stability. Thin-wall, functional and cosmetic parts require stronger control of filling speed, residual gas and temperature fluctuation.<\/p><div class=\"xsd-guide-table-wrap\"><table><thead><tr><th>Item<\/th><th>Recommended Window \/ Checkpoint<\/th><\/tr><\/thead><tbody><tr><td>Injection pressure<\/td><td>45-50 kg\/cm\u00b2 to ensure sufficient filling of complex cavities.<\/td><\/tr><tr><td>Filling time<\/td><td>&lt;=0.01 s; thin-wall parts require shorter filling time to reduce cold shut risk.<\/td><\/tr><tr><td>Mold preheating<\/td><td>150-200 deg C; cold mold injection can cause cold marks or poor filling.<\/td><\/tr><tr><td>Release agent ratio<\/td><td>Water-based release agent can be mixed with water at around 1:200 to reduce VOC emissions.<\/td><\/tr><tr><td>Vacuum die casting<\/td><td>High-precision parts should use vacuum-assisted die casting and keep residual cavity pressure &lt;=30 kPa.<\/td><\/tr><tr><td>Temperature stability<\/td><td>Central melting furnace plus automatic feeding can help keep pouring temperature deviation within +\/-5 deg C.<\/td><\/tr><\/tbody><\/table><\/div><\/section><section id=\"details-7\" class=\"xsd-guide-section\"><h2>Quality Inspection Specification<\/h2><p>GB\/T 13821-2023 differentiates inspection requirements by casting type. For structural, functional and safety-related parts, internal quality should not depend only on visual and dimensional sampling; X-ray, industrial CT or other non-destructive inspection methods should be considered.<\/p><div class=\"xsd-guide-table-wrap\"><table><thead><tr><th>Category<\/th><th>Application<\/th><th>Required Inspection Items<\/th><\/tr><\/thead><tbody><tr><td>Class 1<\/td><td>Structural or functional parts, such as automotive seat belt buckles.<\/td><td>Chemical composition, mechanical properties, dimensional tolerance, surface quality and internal quality.<\/td><\/tr><tr><td>Class 2<\/td><td>General parts, such as decorative components.<\/td><td>Chemical composition, mechanical properties, dimensional tolerance and surface quality.<\/td><\/tr><\/tbody><\/table><\/div><ul><li>Internal quality inspection may use industrial CT and digital X-ray imaging to evaluate porosity and shrinkage defects.<\/li><li>Pin-hole grading may be judged by defect quantity within a 1 cm\u00b2 area.<\/li><li>ZA8 tensile strength may reference &gt;=280 MPa, with elongation after fracture &gt;=10%.<\/li><li>Brinell hardness should follow typical values in the standard appendix; ZA8 may reference 80-100 HBW.<\/li><li>Dimensional tolerance can follow GB\/T 6414-2017, with critical mating surfaces managed at CT4 precision grade where required.<\/li><\/ul><\/section><section id=\"details-8\" class=\"xsd-guide-section\"><h2>Application Requirements<\/h2><ul><li>Automotive applications such as seat belt buckles and door lock housings should focus on salt spray testing, internal shrinkage and critical mating dimension stability.<\/li><li>Automotive safety-related parts may reference GB\/T 10125-2021 salt spray testing, with typical requirements reaching &gt;=96 hours.<\/li><li>Electronics applications such as 5G base station shielding covers should review electromagnetic shielding and high-thermal-conductivity zinc alloy requirements.<\/li><li>High-thermal-conductivity zinc alloy can be evaluated for applications requiring thermal conductivity &gt;=120 W\/m\u00b7K.<\/li><\/ul><\/section><section id=\"details-9\" class=\"xsd-guide-section\"><h2>Management Priorities After the Standard Upgrade<\/h2><ul><li>Older, vague quality-assurance clauses are replaced by more specific inspection rules and nonconforming product handling processes.<\/li><li>Chemical composition limits are broadly compatible with ASTM B86-19, supporting export and international project communication.<\/li><li>Restrictions on harmful elements such as lead and cadmium are clearer, supporting RoHS and ELV compliance review.<\/li><li>Manufacturers should update inspection equipment and optimize process windows according to typical parameters in the GB\/T 13821-2023 appendix.<\/li><\/ul><p>For new energy vehicles, 5G communication and automotive safety parts, vacuum die casting, industrial CT \/ X-ray inspection and a complete material-process-inspection loop are no longer optional extras. They are becoming quality-entry conditions.<\/p><\/section><section id=\"details-10\" class=\"xsd-guide-section\"><div><h2>Need zinc alloy die casting project review or quality documentation support?<\/h2><p>Send drawings, alloy grade, key dimensions, annual volume and inspection requirements. XSD can help review DFM risks, die casting process windows and quality documentation.<\/p><\/div>\n              <a href=\"\/zh\/contact-us\/\">Send Project Details<\/a><\/section><section id=\"related\" class=\"xsd-guide-section\"><h2>\u76f8\u5173\u8d44\u6e90<\/h2><ul><li><a href=\"\/zh\/article-library\/\">\u8d44\u6e90\u4e2d\u5fc3<\/a><\/li><li><a href=\"\/zh\/solutions\/\">\u89e3\u51b3\u65b9\u6848<\/a><\/li><li><a href=\"\/zh\/contact-us\/?source=resource-center#project-details\">\u8054\u7cfb XSD Precision<\/a><\/li><\/ul><\/section><section class=\"xsd-guide-actions\"><p>\u5982\u9700\u7ed3\u5408\u5177\u4f53\u8f66\u578b\u3001\u4ea7\u54c1\u578b\u53f7\u3001\u9a8c\u8bc1\u76ee\u6807\u6216\u5236\u9020\u51c6\u5907\u8981\u6c42\u8fdb\u884c\u8bc4\u4f30\uff0c\u8bf7\u5411 XSD Precision \u63d0\u4f9b\u9879\u76ee\u8d44\u6599\u3001\u56fe\u7eb8\u3001\u89c4\u683c\u3001\u76ee\u6807\u5e02\u573a\u548c\u9a8c\u8bc1\u8fb9\u754c\u3002<\/p><a href=\"\/zh\/contact-us\/?source=resource-center#project-details\">\u63d0\u4ea4\u9879\u76ee\u8d44\u6599\u4e0e RFQ<\/a><\/section><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"TechArticle\",\"headline\":\"Zinc Alloy Die Casting Technical Specification: GB\/T 13821-2023 and GB\/T 13818-2024\",\"description\":\"XSD Precision engineering resource for Zinc Alloy Die Casting Technical Specification GB\/T 13821-2023 and GB\/T 13818-2024, covering TPMS buyer checks, validation points,.\",\"datePublished\":\"2026-07-09T22:54:14\",\"dateModified\":\"2026-08-01\",\"inLanguage\":\"zh-CN\",\"identifier\":\"XSD-RESOURCE-2591-zh-CN\",\"publisher\":{\"@type\":\"Organization\",\"name\":\"XSD Precision\"}}<\/script><\/article>","protected":false},"excerpt":{"rendered":"<p>XSD Precision engineering resource for Zinc Alloy Die Casting Technical Specification GB\/T 13821-2023 and GB\/T 13818-2024, covering TPMS buyer checks, validation points,.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[59,28],"tags":[88,92,78,121,86],"class_list":["post-2591","post","type-post","status-publish","format-standard","hentry","category-technical-solutions","category-die-casting","tag-die-casting","tag-dimension-control","tag-engineering-guides","tag-quality-control","tag-zinc-alloy-die-casting"],"_links":{"self":[{"href":"https:\/\/www.xsd-precision.com\/zh\/wp-json\/wp\/v2\/posts\/2591","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xsd-precision.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xsd-precision.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xsd-precision.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xsd-precision.com\/zh\/wp-json\/wp\/v2\/comments?post=2591"}],"version-history":[{"count":11,"href":"https:\/\/www.xsd-precision.com\/zh\/wp-json\/wp\/v2\/posts\/2591\/revisions"}],"predecessor-version":[{"id":5826,"href":"https:\/\/www.xsd-precision.com\/zh\/wp-json\/wp\/v2\/posts\/2591\/revisions\/5826"}],"wp:attachment":[{"href":"https:\/\/www.xsd-precision.com\/zh\/wp-json\/wp\/v2\/media?parent=2591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xsd-precision.com\/zh\/wp-json\/wp\/v2\/categories?post=2591"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xsd-precision.com\/zh\/wp-json\/wp\/v2\/tags?post=2591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}