{"id":3057,"date":"2026-08-13T09:35:14","date_gmt":"2026-08-13T01:35:14","guid":{"rendered":"https:\/\/www.jcinjectionmolding.com\/?p=3057"},"modified":"2026-08-13T15:37:39","modified_gmt":"2026-08-13T07:37:39","slug":"p20-mold-steel","status":"publish","type":"material_model","link":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/zh_hk\/materials\/mold-steel\/p20-mold-steel\/","title":{"rendered":"P20 Mold Steel"},"content":{"rendered":"
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Cost-effective P20 Mold Steel<\/strong> tooling solutions for medium-volume production and bridge manufacturing. Pre-hardened to 28\u201334 HRC, AISI P20 (DIN 1.2311) tool steel eliminates post-machining heat treatment distortion, enabling rapid 5-axis CNC mold building with a guaranteed shot life up to 500,000 cycles.<\/p>\n<\/section>\n

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P20 Mold Steel Metallurgical & Machinability Profile<\/h2>\n

P20 is a chromium-molybdenum alloy steel pre-hardened at the mill, engineered to balance fast machining cycles against mold core durability:<\/p>\n\n\n\n\n\n\n\n
Metallurgical Metric<\/th>\nP20 Steel Spec Value<\/th>\nTooling Engineering Advantage<\/th>\n<\/tr>\n<\/thead>\n
Pre-Hardened Delivery<\/td>\n28 – 34 HRC (300 HB)<\/td>\nEliminates post-machining quench hardening, avoiding thermal stress cracks or dimensional warping across large tool blocks.<\/td>\n<\/tr>\n
Chrom-Moly Alloy Matrix<\/td>\nAISI P20 \/ DIN 1.2311 Standard<\/td>\nUniform hardness distribution from outer surface to center core, enabling consistent 5-axis CNC high-feed milling speeds.<\/td>\n<\/tr>\n
Surface Polishability<\/td>\nUp to SPI B-2 \/ B-1 Finish<\/td>\nTakes fine paper polishing and chemical Mold-Tech texturing without grain boundary defects on non-optical consumer parts.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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P20 Steel Resins & Tooling Application Matrix<\/h2>\n

P20 pre-hardened steel is the ideal economic choice for unreinforced commodity and engineering resins during \u5851\u81a0\u5c04\u51fa\u6210\u578b<\/strong><\/a>:<\/p>\n\n\n\n\n\n\n\n
Application Class<\/th>\nCompatible Polymers<\/th>\nP20 Tooling Strategy<\/th>\n<\/tr>\n<\/thead>\n
Commodity Household & Packaging<\/td>\nPolypropylene (PP)<\/strong>, Polyethylene (PE)<\/strong>, Polystyrene (PS)<\/strong><\/td>\nLow-cost tooling setup delivering 250,000 to 500,000 shots for storage crates, caps, lids, and domestic housewares.<\/td>\n<\/tr>\n
Medium-Volume Consumer Electronics<\/td>\nABS<\/strong>, Polycarbonate (PC)<\/strong>, PC\/ABS Alloys<\/td>\nIdeal for textured outer monitor covers, printer paper trays, and smart home enclosures requiring tight assembly fits.<\/td>\n<\/tr>\n
Bridge & Pilot Production Tooling<\/td>\nUnreinforced Engineering Polymers<\/td>\nUsed for Low Volume Injection Molding<\/strong> \u548c Prototype Injection Mold<\/strong> bridge tools to fulfill early market orders before mass production.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/section>\n

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P20 Mold Steel Engineering & Tooling Fabrication Guide<\/h2>\n

Molding with pre-hardened P20 steel balances toolmaking speed against cavity accuracy through four engineering advantages:<\/p>\n

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1. Zero Heat-Treatment Distortion (30 HRC)<\/p>\n

Because P20 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.<\/p>\n<\/div>\n

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2. High-Speed 5-Axis CNC Machining<\/p>\n

P20 exhibits excellent machinability. Our 25+ in-house 5-axis CNC machining centers cut P20 cavities rapidly, holding tolerances within \u00b10.005 mm while reducing toolmaking lead times to 2\u20133 weeks.<\/p>\n<\/div>\n

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3. SPI B-2 Surface Polish & Mold-Tech Texturing<\/p>\n

P20 cavity inserts accept high-grade paper polishing up to SPI B-2 or B-1 finishes. It also reacts predictably to acid etching, producing clean Mold-Tech textures or VDI 3400 spark erosion finishes.<\/p>\n<\/div>\n

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4. Cost-Effective Medium-Volume Production (500k Shots)<\/p>\n

For non-corrosive, non-abrasive resins, P20 molds reliably deliver 250,000 to 500,000 shots. Jucheng provides scheduled maintenance to extend tool life across long production runs.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Key Application Fields for P20 Steel Injection Molds<\/h2>\n
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  • Consumer Electronics & Hardware:<\/strong> Computer monitor back covers, printer paper trays, TV housings, remote control bodies, and desktop organizers.<\/li>\n
  • Automotive Interior & Non-Structural Trims (IATF 16949):<\/strong> Glove box covers, interior door trim panels, air conditioning louvers, and trunk storage bins.<\/li>\n
  • Household Commodities & Packaging:<\/strong> Heavy-duty storage crates, food storage container lids, bucket handles, and \u96d9\u8272\u5c04\u51fa\u6210\u578b<\/strong> grips or \u5d4c\u4ef6\u5c04\u51fa\u6210\u578b<\/strong> hardware.<\/li>\n<\/ul>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"

    Cost-effective P20 Mold Steel tooling solutions for medium-volume production and bridge manufacturing. Pre-hardened to 28\u201334 HRC, AISI P20 (DIN 1.2311) tool steel eliminates post-machining heat treatment distortion, enabling rapid 5-axis CNC mold building with a guaranteed shot life up to 500,000 cycles. P20 Mold Steel Metallurgical & Machinability Profile P20 is a chromium-molybdenum alloy steel […]<\/p>\n","protected":false},"featured_media":3058,"template":"","meta":[],"class_list":["post-3057","material_model","type-material_model","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/material_model\/3057","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/material_model"}],"about":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/types\/material_model"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/media\/3058"}],"wp:attachment":[{"href":"https:\/\/www.jcinjectionmolding.com\/zh_hk\/wp-json\/wp\/v2\/media?parent=3057"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}