{"id":3063,"date":"2026-08-13T12:43:27","date_gmt":"2026-08-13T04:43:27","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=3063"},"modified":"2026-08-13T15:38:27","modified_gmt":"2026-08-13T07:38:27","slug":"718-mold-steel","status":"publish","type":"material_model","link":"https:\/\/www.jcinjectionmolding.com\/pt\/materials\/mold-steel\/718-mold-steel\/","title":{"rendered":"A\u00e7o para Molde 718"},"content":{"rendered":"
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High-precision A\u00e7o para Molde 718<\/strong> cavity manufacturing for large-scale appliance housings and automotive interior panels. Pre-hardened with nickel alloy addition to 32\u201338 HRC, 718H (DIN 1.2738) steel provides exceptional deep-section hardness uniformity and zero heat-treatment distortion across 500,000+ production cycles.<\/p>\n<\/section>\n

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718H Mold Steel Metallurgical & Large Block Profile<\/h2>\n

718H is an upgraded nickel-chromium-molybdenum pre-hardened steel, engineered to maintain consistent hardness across thick mold core blocks:<\/p>\n\n\n\n\n\n\n\n
Metallurgical Parameter<\/th>\n718 Steel Spec Metric<\/th>\nLarge Tooling Advantage<\/th>\n<\/tr>\n<\/thead>\n
Nickel-Alloy Pre-Hardening<\/td>\n32 – 38 HRC (340 HB)<\/td>\nPre-hardened at higher hardness than P20, offering superior resistance to core deformation under high injection pressures.<\/td>\n<\/tr>\n
Deep Section Uniformity<\/td>\nDIN 1.2738 \/ AISI P20+Ni<\/td>\nNickel additions prevent soft centers in thick steel blocks (up to 400mm depth), ensuring uniform 5-axis CNC cutter wear.<\/td>\n<\/tr>\n
Texturiza\u00e7\u00e3o e Polibilidade<\/td>\nCompat\u00edvel com SPI B-1 e Grava\u00e7\u00e3o Mold-Tech<\/td>\nAceita texturas uniformes gravadas a \u00e1cido para acabamentos interiores automotivos e polimento de papel de alto brilho sem distor\u00e7\u00e3o do gr\u00e3o.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Matriz de Compatibilidade e Aplica\u00e7\u00e3o de Pol\u00edmeros com A\u00e7o 718<\/h2>\n

O a\u00e7o pr\u00e9-endurecido 718H \u00e9 a refer\u00eancia do setor para componentes pl\u00e1sticos n\u00e3o corrosivos de m\u00e9dio a grande porte em Moldagem por Inje\u00e7\u00e3o de Pl\u00e1stico<\/strong>:<\/p>\n\n\n\n\n\n\n
Classe de Resina Polim\u00e9rica<\/th>\nMaterial Base Recomendado<\/th>\nEstrat\u00e9gia de Ferramental 718<\/th>\n<\/tr>\n<\/thead>\n
Utens\u00edlios Dom\u00e9sticos de Grande Porte e Embalagens<\/td>\nPolipropileno (PP)<\/strong>, Polietileno (PE)<\/strong>, ABS<\/strong>, Poliestireno (PS)<\/strong><\/td>\nProporciona vida \u00fatil do molde de mais de 500.000 ciclos para caixas log\u00edsticas grandes, tampas traseiras de televisores e tanques de m\u00e1quinas de lavar.<\/td>\n<\/tr>\n
Acabamentos Interiores Automotivos e Para-choques<\/td>\nPolicarbonato (PC)<\/strong>, Poliamida (PA\/Nylon)<\/strong>, Ligas de PC\/ABS<\/td>\nSuporta texturas de gr\u00e3o gravadas a \u00e1cido intrincadas para acabamentos de portas automotivas, porta-luvas e molduras de pain\u00e9is.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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Engenharia de Ferramental em A\u00e7o para Moldes 718 e Projeto Pr\u00e9-Endurecido<\/h2>\n

A moldagem com a\u00e7o pr\u00e9-endurecido 718H equilibra a velocidade de fabrica\u00e7\u00e3o do molde com a precis\u00e3o da cavidade atrav\u00e9s de quatro vantagens de engenharia:<\/p>\n

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Zero Heat-Treatment Distortion (35 HRC)<\/p>\n

Because 718H steel is pre-hardened at the steel mill, no post-machining quench heat treatment is needed. This eliminates thermal stress distortion across large core plates, guaranteeing true-to-CAD dimensions on large appliance molds during Fabrica\u00e7\u00e3o de Moldes Personalizados<\/strong><\/a>.<\/p>\n<\/div>\n

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Deep-Section Uniform Hardness (Nickel Addition)<\/p>\n

Unlike standard P20, 1% nickel addition in 718H prevents core softening in massive steel blocks. Jucheng\u2019s 5-axis CNC machining centers cut deep cavity walls with uniform tool wear and \u00b10.005 mm accuracy.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Key Application Fields for 718 Steel Injection Molds<\/h2>\n
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  • Automotive Exterior & Interiors (IATF 16949):<\/strong> Large Ferramentas de Moldagem por Inje\u00e7\u00e3o de Produ\u00e7\u00e3o<\/strong> tools for bumper fascia trims, door panels, glove boxes, and dashboard bezels.<\/li>\n
  • Large Consumer Appliances:<\/strong> Washing machine tubs, refrigerator door liners, television back enclosures, and air conditioner housings.<\/li>\n
  • Industrial Logistics & Commodities:<\/strong> Heavy-duty stackable crates, recycling bins, agricultural trays, and Moldagem por Inje\u00e7\u00e3o de Dois Componentes<\/strong> ou Moldagem por Inje\u00e7\u00e3o com Insertos<\/strong> hardware.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

    High-precision 718 Mold Steel cavity manufacturing for large-scale appliance housings and automotive interior panels. Pre-hardened with nickel alloy addition to 32\u201338 HRC, 718H (DIN 1.2738) steel provides exceptional deep-section hardness uniformity and zero heat-treatment distortion across 500,000+ production cycles. 718H Mold Steel Metallurgical & Large Block Profile 718H is an upgraded nickel-chromium-molybdenum pre-hardened steel, engineered […]<\/p>\n","protected":false},"featured_media":3064,"template":"","meta":[],"class_list":["post-3063","material_model","type-material_model","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/material_model\/3063","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/material_model"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/types\/material_model"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/media\/3064"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/pt\/wp-json\/wp\/v2\/media?parent=3063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}