{"id":9326,"date":"2025-08-02T09:45:14","date_gmt":"2025-08-02T01:45:14","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9326"},"modified":"2026-01-29T01:15:14","modified_gmt":"2026-01-28T17:15:14","slug":"p20-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/p20-tool-steel\/","title":{"rendered":"Acero para herramientas P20 | 1.2311 | 3Cr2Mo"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"337\" class=\"wp-block-cover__image-background wp-image-7233 size-large\" alt=\"\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-1024x337.webp\" data-object-fit=\"cover\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-1024x337.webp 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-300x99.webp 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-768x253.webp 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-1536x506.webp 1536w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3-18x6.webp 18w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/05\/banner3.webp 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#4e4b40\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<div class=\"wp-block-uagb-container uagb-block-29fc5c3c alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-uagb-advanced-heading uagb-block-c196a237\"><h6 class=\"uagb-heading-text\"><a href=\"https:\/\/aobosteel.com\/\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">Home<\/mark> <\/a>&gt; <a href=\"https:\/\/aobosteel.com\/tool-steels\/\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">Tool Steel Catalog<\/mark><u> <\/u><\/a>&gt; P20 Tool Steel<\/h6><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-d1ce38c5\"><h5 class=\"uagb-heading-text\"><em>Aobo Steel | Global Tool Steel Supplier in China<\/em><\/h5><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-5b6189ba\"><h2 class=\"uagb-heading-text\">AISI P20 Tool Steel | 1.2311 | 3Cr2Mo Pre-Hardened Plastic Mold Steel<\/h2><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-914bcd03\"><h5 class=\"uagb-heading-text\">\u2713100% UT Tested Quality Assurance<\/h5><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-84cd4af9\"><h5 class=\"uagb-heading-text\">\u2713SEP 1921-82 Class D\/d Guaranteed<\/h5><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-20e20150\"><h5 class=\"uagb-heading-text\">\u2713Supplied in Pre-Hardened Condition<\/h5><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-33ee52f8\"><h5 class=\"uagb-heading-text\">\u2713Surface: Black Scale, Turned, Mill Finish, or Polished<\/h5><\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Quick Inquiry For P20 Material<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<p>P20 tool steel is a widely used type of tool steel, primarily known as a low-carbon mold steel. It is categorized as a plastic mold steel designed for machined cavities. The AISI (American Iron and Steel Institute) designation for P20 is UNS T51620. P20 is most frequently used for plastic dies and molds. It can also be applied to zinc die-casting dies and holder blocks. A key characteristic of P20 tool steel is that it is typically purchased and supplied in a prehardened condition. P20 material is equivalent to China GB&nbsp;<em><a href=\"https:\/\/aobosteel.com\/3cr2mo-tool-steel\/\">3Cr2Mo<\/a><\/em>, Germany DIN 1.2311, Sweden ASSAB 618, and ISO 35CrMo2.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-eael-table-of-content\">1. Application<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plastic Molds and Dies. (To learn more about the advantages of P20 in mold applications, please refer to&nbsp;<em><a href=\"https:\/\/aobosteel.com\/advantages-of-using-p20-steel-in-molds\/\">Advantages of using P20 steel in molds<\/a><\/em>)<\/li>\n\n\n\n<li>Die-Casting Dies (for low-melting alloys)<\/li>\n\n\n\n<li>Hot Extrusion (specifically for Aluminum and Magnesium)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-eael-table-of-content\">2. Chemical composition<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Carbon (C)<\/td><td>Manganese (Mn)<\/td><td>Silicon (Si)<\/td><td>Chromium (Cr)<\/td><td>Molybdenum (Mo)<\/td><td>Phosphorus (P)<\/td><td>Sulfur (S)<\/td><\/tr><tr><td>0.28 \u2013 0.40%<\/td><td>0.60 \u2013 1.00%<\/td><td>0.20 \u2013 0.80%<\/td><td>1.40 \u2013 2.00%<\/td><td>0.30 \u2013 0.55%<\/td><td>\u2264 0.030%<\/td><td>\u2264 0.030%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-eael-table-of-content\">3. P20 Steel&nbsp;Properties<sup data-fn=\"7fc67d74-cd1a-408a-b145-bbae1512b2fd\" class=\"fn\"><a id=\"7fc67d74-cd1a-408a-b145-bbae1512b2fd-link\" href=\"#7fc67d74-cd1a-408a-b145-bbae1512b2fd\">1<\/a><\/sup><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pre-hardened hardness<\/strong>: 32 HRC.<\/li>\n\n\n\n<li><strong>Hardness of P20 filler wire:<\/strong>&nbsp;40 HRC.<\/li>\n\n\n\n<li><strong>Yield Strength:<\/strong>&nbsp;950 MPa after prehardening.<\/li>\n\n\n\n<li><strong>Elastic Modulus:&nbsp;<\/strong>210 GPa (30 \u00d7 10^6 psi) at room temperature. This decreases to about 185 GPa (27 \u00d7 10^6 psi) at 260 \u00b0C (500 \u00b0F) and to about 150 GPa (22 \u00d7 10^6 psi) at 540 \u00b0C (1000 \u00b0F).<\/li>\n\n\n\n<li><strong>Poisson\u2019s Ratio:<\/strong>&nbsp;0.287.<\/li>\n\n\n\n<li><strong>Machinability:<\/strong>&nbsp; Good machinability. It is readily machined in its pre-hardened condition. Machinability can be further improved by adding sulfur to the P20 grade. Machining before final P20&nbsp;<em><a href=\"https:\/\/aobosteel.com\/the-heat-treatment-of-tool-steel\/\">tool steel heat treatment<\/a><\/em>&nbsp;results in better machinability.<\/li>\n\n\n\n<li><strong>Polishability<\/strong>: Excellent polishability. Higher hardness (e.g., 40 HRC) can improve polished quality.<\/li>\n\n\n\n<li><strong>Dimensional Stability<\/strong>: Good dimensional stability. It has fewer dimensional changes on hardening compared to water-hardening steel grades.<\/li>\n\n\n\n<li><strong>Toughness<\/strong>: Medium to high toughness. Carburized P20 material provides good toughness. If higher toughness than P20 is needed (e.g., for large dies subject to severe shock), we suggest P4 and P6 mold steels.<\/li>\n\n\n\n<li><strong>Wear Resistance<\/strong>: It has low to medium&nbsp;<em>wear<\/em>&nbsp;resistance in its general condition. Wear resistance is improved by carburizing.<\/li>\n\n\n\n<li><strong>Weldability:<\/strong>&nbsp;Medium weldability.&nbsp;<\/li>\n\n\n\n<li><strong>Other Processing:<\/strong>&nbsp;P20 material is also suitable for photo-etching (texturing) and Electrical Discharge Machining (EDM).<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-columns has-ast-global-color-8-background-color has-background is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif\" alt=\"p20 tool steel\" class=\"wp-image-6593\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif 500w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel-12x12.avif 12w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><figcaption class=\"wp-element-caption\">P20 tool steel<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-ast-global-color-0-color has-text-color has-link-color wp-elements-2aa665f13fa1e04dca855a2c636953e4\"><strong>Interested in P20? Please fill out the form below to contact us now!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-leadin-hubspot-form-block\">\n\t\t\t\t\t\t<script>\n\t\t\t\t\t\t\twindow.hsFormsOnReady = window.hsFormsOnReady || [];\n\t\t\t\t\t\t\twindow.hsFormsOnReady.push(()=>{\n\t\t\t\t\t\t\t\thbspt.forms.create({\n\t\t\t\t\t\t\t\t\tportalId: 242461771,\n\t\t\t\t\t\t\t\t\tformId: \"1f7a4dcb-eb56-45e5-bd4f-5921cbf714c1\",\n\t\t\t\t\t\t\t\t\ttarget: \"#hbspt-form-1779122790000-0943903059\",\n\t\t\t\t\t\t\t\t\tregion: \"na2\",\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t})});\n\t\t\t\t\t\t<\/script>\n\t\t\t\t\t\t<div class=\"hbspt-form\" id=\"hbspt-form-1779122790000-0943903059\"><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-eael-table-of-content\">4. Heat Treatment<\/h2>\n\n\n\n<p>P20 steel is commonly supplied in a&nbsp;<strong>pre-hardened state, with a hardness of 28-40 HRC<\/strong>. It can be directly machined into complex mold cavities and put into use without further high-temperature&nbsp;heat treating. The pre-hardened state helps to avoid deformation and dimensional changes that may occur during subsequent heat treatment.<\/p>\n\n\n\n<p>Although P20 material is always used directly in a pre-hardened state, its surface properties can be enhanced through further heat treatment (particularly carburizing) to meet specific application requirements, such as plastic molding.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-eael-table-of-content\">4.1&nbsp;Carburization<\/h3>\n\n\n\n<p>For plastic molding applications, P20 material is frequently carburized and then hardened after the mold impression has been machined. The as-quenched surface hardness of carburized P20 molds can reach up to&nbsp;65 HRC, with the core hardness typically around&nbsp;45 HRC. Case depths can be controlled, generally&nbsp;varying from 0.030 inches for smaller molds to 0.065 inches for large molds. We would like to remind you that the&nbsp;resistance of carburized P20 material to softening during <a href=\"https:\/\/aobosteel.com\/knowledge-hub\/what-is-tempering\/\">tempering<\/a> is relatively low, similar to that of plain carbon steel.<\/p>\n\n\n\n<p>The carburizing temperature should<strong>&nbsp;NOT<\/strong>&nbsp;exceed&nbsp;<strong>870\u00b0C (1600\u00b0F)<\/strong>. Exceeding this temperature will adversely affect its polishing performance. For instance, carburizing at 845\u00b0C (1550\u00b0F) resulted in a surface hardness of 65.6 HRC and a case depth of 0.36 mm, whereas at 900\u00b0C (1650\u00b0F), the surface hardness was slightly lower at 62.5 HRC with a case depth of 0.41 mm.<\/p>\n\n\n\n<p>Carburized P20 steel has a good combination of wear resistance, toughness, and polishability.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"6-eael-table-of-content\">4.2&nbsp;Preheating<\/h3>\n\n\n\n<p>We strongly recommend preheating P20 tool steel to a temperature of&nbsp;<strong>1200\u00b0F (650\u00b0C)<\/strong>.<\/p>\n\n\n\n<p>The purpose of preheating is to precondition the molecules within the part for transformation and to relieve stresses caused by machining. It also helps to equalize heat within the part, allowing stresses to dissipate before the metal becomes too soft at higher temperatures.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"7-eael-table-of-content\">4.3&nbsp;Hardening (Austenitizing)<\/h3>\n\n\n\n<p>The hardening temperature is&nbsp;<strong>1525\u00b0F (830\u00b0C).<\/strong>&nbsp;The soaking time is&nbsp;<strong>45\u201360 minutes per inch of thickness<\/strong>. For parts under 1 inch in thickness, we recommend a minimum soaking time of 45\u201360 minutes. [For information about <a href=\"https:\/\/aobosteel.com\/knowledge-hub\/what-is-austenite\/\">austenite<\/a>, please refer to the explanation of&nbsp;austenite&nbsp;on Wikipedia.]<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"8-eael-table-of-content\">4.4&nbsp;Quenching<\/h3>\n\n\n\n<p>Material P20 steel is oil quenched. Oil <a href=\"https:\/\/aobosteel.com\/knowledge-hub\/what-is-quenching\/\">quenching<\/a> from a relatively low temperature results in less dimensional change compared to water-hardening steels. After quenching, parts should be cooled to a minimum of&nbsp;<strong>150\u00b0F (66\u00b0C)<\/strong>&nbsp;if air-hardened, or&nbsp;<strong>150-200\u00b0F (66-93\u00b0C)<\/strong>&nbsp;if liquid-quenched, and then tempered immediately.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"9-eael-table-of-content\">4.5&nbsp;Tempering&nbsp;<\/h3>\n\n\n\n<p>P20 tool steel usually requires double tempering. The standard tempering temperature is&nbsp;<strong>400\u00b0F (205\u00b0C)<\/strong>.<\/p>\n\n\n\n<p>For a P20 steel that has been oil quenched from&nbsp;<strong>845\u00b0C (1550\u00b0F)<\/strong>&nbsp;and tempered for&nbsp;<strong>2 hours at 205\u00b0C (400\u00b0F)<\/strong>, the resulting hardness is&nbsp;<strong>36-38 HRC<\/strong>, with a tensile strength of 1310 MPa, a yield strength of 1172 MPa, 13% elongation, and 51% reduction of area. If the as-quenched microstructure is bainitic, the hardness after tempering may be 4 HRC lower than standard tempering diagrams.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"10-eael-table-of-content\">4.6 Forging<sup data-fn=\"ec238e21-0cd7-4a73-b1b6-7bd05d8e0653\" class=\"fn\"><a id=\"ec238e21-0cd7-4a73-b1b6-7bd05d8e0653-link\" href=\"#ec238e21-0cd7-4a73-b1b6-7bd05d8e0653\">2<\/a><\/sup><\/h3>\n\n\n\n<p>P20 should be slowly preheated to&nbsp;<strong>815\u00b0C (1500\u00b0F)<\/strong>. The forging temperature is&nbsp;<strong>1065 to 1230\u00b0C (1950 to 2250\u00b0F).<\/strong>&nbsp;For larger sections or when heavy and rapid reductions are planned, it is advisable to use the higher end of this temperature range. For smaller sections or lighter reductions, the lower end of the range is more suitable. Do&nbsp;<strong>NOT<\/strong>&nbsp;forge P20 below&nbsp;<strong>815 \u00b0C (1500 \u00b0F).<\/strong>&nbsp;<\/p>\n\n\n\n<p>After forging, the steel is cooled slowly by cooling it inside the furnace or burying it in heat-insulating media such as lime, mica, or diatomaceous earth.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-5-p20-steel-technical-data-sheet\">5. P20 Steel Technical Data Sheet<\/h2>\n\n\n\n<p>Experimental Conditions: Carbon: 0.30% Manganese: 0.75% Silicon: 0.50% Chromium: 1.65% Molybdenum: 0.40%<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>Hardness Reference After Quenching and Tempering<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Tempering Temperature<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Hardness (Rockwell C)<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">As Quenched<\/td><td class=\"has-text-align-center\" data-align=\"center\">51 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">205\u00b0C \/ 400\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">49 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">315\u00b0C \/ 600\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">47 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">425\u00b0C \/ 800\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">44 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">540\u00b0C \/ 1000\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">39 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">595\u00b0C \/ 1100\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">33 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">650\u00b0C \/ 1200\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">26 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">675\u00b0C \/ 1250\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">21 HRC<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\"><strong>Preheat Temperature:<\/strong> 650\u00b0C \/ 1200\u00b0F <strong>Hardening Temperature:<\/strong> 830\u00b0C \/ 1525\u00b0F <strong>Quenching Medium:<\/strong> Oil Quench<\/figcaption><\/figure>\n\n\n\n<p class=\"has-text-align-center\"><strong>Hardness Reference After Carburizing and Tempering<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Tempering Temperature<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Case Hardness (Rc)<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Core Hardness (Rc)<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">315\u00b0C \/ 600\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">58 HRC<\/td><td class=\"has-text-align-center\" data-align=\"center\">47 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">354\u00b0C \/ 650\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">57 HRC<\/td><td class=\"has-text-align-center\" data-align=\"center\">46 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">370\u00b0C \/ 700\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">56 HRC<\/td><td class=\"has-text-align-center\" data-align=\"center\">45 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">400\u00b0C \/ 750\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">55 HRC<\/td><td class=\"has-text-align-center\" data-align=\"center\">44 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">425\u00b0C \/ 800\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">54 HRC<\/td><td class=\"has-text-align-center\" data-align=\"center\">43 HRC<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">480\u00b0C \/ 900\u00b0F<\/td><td class=\"has-text-align-center\" data-align=\"center\">52 HRC<\/td><td class=\"has-text-align-center\" data-align=\"center\">40 HRC<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\"><strong>Carburizing Temperature:<\/strong> 870\u00b0C \/ 1600\u00b0F <strong>Process:<\/strong> After carburizing, furnace cool to 800\u00b0C \/ 1475\u00b0F, then oil quench and temper.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Carburizing Time<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Average Case Depth<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">4 Hours<\/td><td class=\"has-text-align-center\" data-align=\"center\">0.76 mm \/ 0.030&#8243;<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">8 Hours<\/td><td class=\"has-text-align-center\" data-align=\"center\">1.07 mm \/ 0.042&#8243;<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">12 Hours<\/td><td class=\"has-text-align-center\" data-align=\"center\">1.40 mm \/ 0.055&#8243;<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">16 Hours<\/td><td class=\"has-text-align-center\" data-align=\"center\">1.57 mm \/ 0.062&#8243;<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"11-eael-table-of-content\">6. Supply forms and dimensions<\/h2>\n\n\n\n<p>The P20 tool steel we supply is available in various shapes, including round bars, sheet plates, slabs, flat bars, square bars, and blocks. The dimensions of the flat bar range from: width 20\u2013600 mm \u00d7 thickness 20\u2013400 mm \u00d7 length 1,000\u20135,500 mm. The dimensions of the round bar range from a diameter of 20\u2013400 mm \u00d7 a length of 1,000\u20135,500 mm. The block dimensions are obtained by cutting the flat bar.<\/p>\n\n\n\n<p>UT testing: Sep 1921-84 D\/d, E\/e.&nbsp;<\/p>\n\n\n\n<p>Surface Treatment: original black, peeled, machined\/turned, polished, grounded, or milled surface finishes.<\/p>\n\n\n\n<p>Inventory Status: We do not maintain a stock. We arrange production based on customer orders.<\/p>\n\n\n\n<p>Delivery time: Electric Arc Furnace (EAF) materials are 30-45 days.<\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\" id=\"12-eael-table-of-content\">FAQ<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1755006877220\"><strong class=\"schema-faq-question\"><strong>What is P20 tool steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">P20 tool steel is a versatile, low-alloy tool steel known for its good toughness at moderate strength levels, excellent dimensional stability during heat treatment, and good polishability. It is typically sold in a pre-hardened condition.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755006894869\"><strong class=\"schema-faq-question\"><strong>What are the key properties of P20 steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">Key properties of P20 steel include excellent dimensional stability during heat treatment, good polishability, and good toughness at moderate strength levels. It has a density of 0.284 lb\/in\u00b3 (7861 kg\/m\u00b3) and a machinability rating of 60-65% of a 1% carbon steel.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755006907997\"><strong class=\"schema-faq-question\"><strong>What is the hardness of P20 steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">P20 steel is typically supplied with a Brinell hardness (HBW) of approximately 300, which is roughly equivalent to 30 Rockwell C (HRC). It can be tempered to achieve a Rockwell C hardness between 28 and 37. For more information about this question, please read\u00a0<em><a href=\"https:\/\/aobosteel.com\/p20-steel-hardness\/\"><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0693e3\" class=\"has-inline-color\">P20 steel hardness<\/mark><\/a><\/em>.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755006961029\"><strong class=\"schema-faq-question\"><strong>Is P20 tool steel pre-hardened?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes, P20 steel is typically supplied in a pre-hardened condition with a hardness of approximately 300 HBW. This allows for direct use in mold making without further hardening or heat treatment, cutting down on the running period and improving efficiency.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755006978944\"><strong class=\"schema-faq-question\"><strong>What are the common applications for P20 mold steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">P20 mold steel is extensively used for plastic injection mold cavities and tooling, and for die casting dies for zinc. It is also ideal for large plastic molds. Other applications include die holders, backers, bolsters, hydroforming tools, and various components in automotive, mechanical engineering, and tool manufacturing (e.g., punches, milling cutters, turning tools).<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755006980372\"><strong class=\"schema-faq-question\"><strong>What is the typical mold life expectancy for P20 steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">For pre-hardened P20 steel (1.2311), the die life can reach 500,000 \u201cmode times\u201d (shots). Some vendors guarantee 100,000 shots, and P20 molds are known to run for thousands of parts.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755006981139\"><strong class=\"schema-faq-question\"><strong>Is P20 steel suitable for polishing?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes, P20 steel is known for its good polishability. It is capable of achieving a good polished finish, which is crucial for mold applications.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755006982413\"><strong class=\"schema-faq-question\"><strong>Can P20 steel be nitrided or carburized?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes, P20 tool steels are capable of being nitrided or carburized. Case hardening or nitriding is an option to achieve maximum surface hardness for applications such as compression molding plastic dies.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755006983361\"><strong class=\"schema-faq-question\"><strong>Is P20 steel used for high-temperature applications?<\/strong><\/strong> <p class=\"schema-faq-answer\">P20 tool steels are typically used for low-temperature applications, including injection molds. However, in the field of die-casting molds, P20\u2019s excellent thermal conductivity and thermal expansion coefficient allow it to resist the impact of high pressure and high temperature in mold manufacturing, ensuring precision and quality.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755006984637\"><strong class=\"schema-faq-question\"><strong>How does P20 steel compare to 4140 steel for mold applications?<\/strong><\/strong> <p class=\"schema-faq-answer\">P20 steel offers excellent dimensional stability during heat treatment and good polishability, making it ideal for mold applications. In contrast, 4140 steel is renowned for its strength and impact resistance. While 4140 steel is generally used for high-stress parts like shafts and gears, it can sometimes replace P20 steel plate in certain mold industry applications.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755006985554\"><strong class=\"schema-faq-question\"><strong>How does P20 steel compare to S50C steel for injection molding?<\/strong><\/strong> <p class=\"schema-faq-answer\">P20 is generally considered better than S50C for mold steel. For prototyping molds needing only thousands of pieces, S50C is acceptable, but for more than 10,000 pieces, P20 is preferable. P20 offers better machinability and mirror grinding performance and is more frequently recommended for plastic molds compared to S50C, which has low cold deformation plasticity and poor welding performance.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007105696\"><strong class=\"schema-faq-question\"><strong>Is P20 steel more expensive than 4140 steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes, P20 steel is generally more expensive than 4140 steel. This is attributed to its specialized applications and chemical composition.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007106795\"><strong class=\"schema-faq-question\"><strong>Can 4140 steel be used for mold applications?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes, 4140 steel can be used for some mold applications, particularly those that require high strength and resistance to wear and tear. However, P20 is more commonly selected for molds due to its superior dimensional stability under heat treatment.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007107784\"><strong class=\"schema-faq-question\"><strong>What are the different types or equivalents of P20 steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">Besides the standard AISI P20, it is known by international equivalents such as DIN 1.2311 and GB\/T 3Cr2Mo. There are also variants like P20+Ni (1.2738), which has added nickel for consistent hardness in larger sections and is easy to polish, and P20+S (1.2312), which has higher sulfur for improved machinability but is less suitable for polishing.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007149948\"><strong class=\"schema-faq-question\"><strong>What standards apply to P20 steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">In the USA, P20 steel generally adheres to the\u00a0ASTM A681 standard. In Europe, it\u2019s recognized by the\u00a0DIN EN ISO 4957 standard\u00a0(e.g., 1.2311 and 1.2312), and in China, the equivalent grade is\u00a03Cr2Mo\u00a0under the GB\/T 1299 standard.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007150840\"><strong class=\"schema-faq-question\"><strong>What is the machinability of P20 steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">P20 steel has a\u00a0machinability rating of 60-65%\u00a0when compared to a 1% carbon steel. It is noted for its\u00a0excellent cutting performance\u00a0and overall good machinability.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007154126\"><strong class=\"schema-faq-question\"><strong>Does P20 steel have good weldability?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes, P20 tool steel has\u00a0good weldability.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007232699\"><strong class=\"schema-faq-question\"><strong>What is similar to P20 material?<\/strong><\/strong> <p class=\"schema-faq-answer\">When looking for materials similar to P20, you\u2019ll primarily find a range of P20-modified steels, such as DIN 1.2738, 1.2311, 1.2312, and various branded versions, that build upon its properties, as well as other tool steels and stainless steels such as\u00a0<em><a href=\"https:\/\/aobosteel.com\/h13-tool-steel\/\">H13<\/a>(<a href=\"https:\/\/aobosteel.com\/h13-vs-p20-steel\/\">H13 vs P20 steel<\/a>)<\/em>, P21,\u00a0<em><a href=\"https:\/\/aobosteel.com\/a2-tool-steel\/\">A2<\/a><\/em>,\u00a0<a href=\"https:\/\/aobosteel.com\/d2-tool-steel\/\">D2<\/a>, and\u00a0<a href=\"https:\/\/aobosteel.com\/420-stainless-steel\/\">420<\/a>, that serve similar purposes in mold making but offer different balances of properties such as wear resistance, toughness, or corrosion resistance.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007233547\"><strong class=\"schema-faq-question\"><strong>Is P20 weldable?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes, P20 steel is weldable, particularly for repair and fabrication, though specific precautions and techniques are recommended to ensure good results. For more information about this question, please read\u00a0<em><a href=\"https:\/\/aobosteel.com\/is-p20-steel-weldable\/\">Is P20 steel weldable?<\/a><\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007235081\"><strong class=\"schema-faq-question\"><strong>Is P20 similar to 4140?<\/strong><\/strong> <p class=\"schema-faq-answer\">No, they are not similar in their fundamental design, typical processing, and intended applications. For more information about this question, please read<mark style=\"background-color:rgba(0, 0, 0, 0);color:#0693e3\" class=\"has-inline-color\">\u00a0<\/mark><em><a href=\"https:\/\/aobosteel.com\/p20-steel-vs-4140\/\">P20 steel vs 4140<\/a><\/em>.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007412492\"><strong class=\"schema-faq-question\"><strong>Is P20 a high-carbon steel?<\/strong><\/strong> <p class=\"schema-faq-answer\">P20 steel is\u00a0not\u00a0high-carbon steel.\u00a0Its carbon content generally falls within the range of\u00a0medium-carbon steels.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1755007431517\"><strong class=\"schema-faq-question\"><strong>How do you stress relieve P20?<\/strong><\/strong> <p class=\"schema-faq-answer\">Stress relieving for P20 steel is typically recommended at temperatures between 705 and 730 \u00b0C (1300 and 1350 \u00b0F)<\/p> <\/div> <\/div>\n\n\n<ol class=\"wp-block-footnotes\"><li id=\"7fc67d74-cd1a-408a-b145-bbae1512b2fd\">ASM International. (2000).\u00a0<em>ASM Handbook, Volume 8: Mechanical Testing and Evaluation<\/em>. ASM International. <a href=\"#7fc67d74-cd1a-408a-b145-bbae1512b2fd-link\" aria-label=\"Saltar a la referencia de la nota al pie 1\">\u21a9\ufe0e<\/a><\/li><li id=\"ec238e21-0cd7-4a73-b1b6-7bd05d8e0653\">Roberts, G., Krauss, G., &amp; Kennedy, R. (1998).\u00a0<em>Tool Steels: 5th Edition<\/em>. ASM International. <a href=\"#ec238e21-0cd7-4a73-b1b6-7bd05d8e0653-link\" aria-label=\"Saltar a la referencia de la nota al pie 2\">\u21a9\ufe0e<\/a><\/li><\/ol>\n\n\n<div class=\"wp-block-group has-ast-global-color-8-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">Looking for High-Performance P20 Tool Steel?<\/h2>\n\n\n\n<p>Partner with Aobo Steel, your trusted experts with over 20 years of experience in forging superior tool steels. We provide top-quality P20 solutions, precisely tailored to meet your manufacturing needs and enhance your operational efficiency.<\/p>\n\n\n\n<p>Whether you need standard P20 or a custom specification, our specialists are ready to assist you with material selection and provide a competitive, no-obligation quote.<\/p>\n\n\n\n<p class=\"has-text-align-center has-ast-global-color-0-color has-text-color has-link-color wp-elements-c4f0236bc80b39a80b5d4997121dc880\"><strong>Ready to Get Started? Please fill out the form below to connect with us!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-leadin-hubspot-form-block\">\n\t\t\t\t\t\t<script>\n\t\t\t\t\t\t\twindow.hsFormsOnReady = window.hsFormsOnReady || [];\n\t\t\t\t\t\t\twindow.hsFormsOnReady.push(()=>{\n\t\t\t\t\t\t\t\thbspt.forms.create({\n\t\t\t\t\t\t\t\t\tportalId: 242461771,\n\t\t\t\t\t\t\t\t\tformId: \"1f7a4dcb-eb56-45e5-bd4f-5921cbf714c1\",\n\t\t\t\t\t\t\t\t\ttarget: \"#hbspt-form-1779122790000-4716249982\",\n\t\t\t\t\t\t\t\t\tregion: \"na2\",\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t})});\n\t\t\t\t\t\t<\/script>\n\t\t\t\t\t\t<div class=\"hbspt-form\" id=\"hbspt-form-1779122790000-4716249982\"><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Forged P20 \/ 1.2311 \/ 3Cr2Mo Pre-hardened Mold Steel Round Bar\",\n  \"image\": \"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif\",\n  \"description\": \"High-quality Forged P20 (1.2311 \/ 3Cr2Mo) Pre-hardened Plastic Mold Steel directly from Aobo Steel factory. Excellent machinability and uniform hardness (28-32 HRC). Ideal for plastic injection molds and die holders. Manufacturer price.\",\n  \"brand\": {\n    \"@type\": \"Brand\",\n    \"name\": \"Aobo Steel\"\n  },\n  \"manufacturer\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Aobo Steel\"\n  },\n  \"sku\": \"AOBO-P20-Round\",\n  \"mpn\": \"AOBO-P20-MFG\",\n  \"offers\": {\n    \"@type\": \"AggregateOffer\",\n    \"url\": \"https:\/\/aobosteel.com\/p20-tool-steel\/\",\n    \"priceCurrency\": \"USD\",\n    \"lowPrice\": \"1100\",\n    \"highPrice\": \"1400\",\n    \"offerCount\": \"5\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"itemCondition\": \"https:\/\/schema.org\/NewCondition\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"Aobo Steel\",\n      \"telephone\": \"+86 180 6294 5370\",\n      \"address\": {\n        \"@type\": \"PostalAddress\",\n        \"streetAddress\": \"No. 141 Huangjiawan, Shileishan Village, Xisai District\",\n        \"addressLocality\": \"Huangshi City\",\n        \"addressRegion\": \"Hubei Province\",\n        \"postalCode\": \"435000\",\n        \"addressCountry\": \"CN\"\n      }\n    }\n  }\n}\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>P20 tool steel is a widely used type of tool steel, primarily known as a low-carbon mold steel. It is categorized as a plastic mold steel designed for machined cavities. The AISI (American Iron and Steel Institute) designation for P20 is UNS T51620. P20 is most frequently used for plastic dies and molds. It can [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6593,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"landing-page","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"[{\"content\":\"ASM International. (2000).\u00a0<em>ASM Handbook, Volume 8: Mechanical Testing and Evaluation<\/em>. ASM International.\",\"id\":\"7fc67d74-cd1a-408a-b145-bbae1512b2fd\"},{\"content\":\"Roberts, G., Krauss, G., &amp; Kennedy, R. (1998).\u00a0<em>Tool Steels: 5th Edition<\/em>. ASM International.\",\"id\":\"ec238e21-0cd7-4a73-b1b6-7bd05d8e0653\"}]"},"class_list":["post-9326","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>P20 Tool Steel | 1.2311 | 3Cr2Mo - AoboSteel<\/title>\n<meta name=\"description\" content=\"Learn about P20 tool steel, its properties, and why it is the preferred choice for manufacturing plastic molds and dies.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aobosteel.com\/es\/p20-tool-steel\/\" \/>\n<meta property=\"og:locale\" content=\"es_MX\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P20 Tool Steel | 1.2311 | 3Cr2Mo\" \/>\n<meta property=\"og:description\" content=\"Learn about 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is P20 tool steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"P20 tool steel is a versatile, low-alloy tool steel known for its good toughness at moderate strength levels, excellent dimensional stability during heat treatment, and good polishability. 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For more information about this question, please read\u00a0<em><a href=\\\"https:\\\/\\\/aobosteel.com\\\/p20-steel-hardness\\\/\\\">P20 steel hardness<\\\/a><\\\/em>.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755006961029\",\"position\":4,\"url\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755006961029\",\"name\":\"Is P20 tool steel pre-hardened?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, P20 steel is typically supplied in a pre-hardened condition with a hardness of approximately 300 HBW. 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While 4140 steel is generally used for high-stress parts like shafts and gears, it can sometimes replace P20 steel plate in certain mold industry applications.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755006985554\",\"position\":11,\"url\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755006985554\",\"name\":\"How does P20 steel compare to S50C steel for injection molding?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"P20 is generally considered better than S50C for mold steel. For prototyping molds needing only thousands of pieces, S50C is acceptable, but for more than 10,000 pieces, P20 is preferable. P20 offers better machinability and mirror grinding performance and is more frequently recommended for plastic molds compared to S50C, which has low cold deformation plasticity and poor welding performance.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755007105696\",\"position\":12,\"url\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755007105696\",\"name\":\"Is P20 steel more expensive than 4140 steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, P20 steel is generally more expensive than 4140 steel. 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In Europe, it\u2019s recognized by the\u00a0DIN EN ISO 4957 standard\u00a0(e.g., 1.2311 and 1.2312), and in China, the equivalent grade is\u00a03Cr2Mo\u00a0under the GB\\\/T 1299 standard.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755007150840\",\"position\":16,\"url\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755007150840\",\"name\":\"What is the machinability of P20 steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"P20 steel has a\u00a0machinability rating of 60-65%\u00a0when compared to a 1% carbon steel. 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For more information about this question, please read\u00a0<em><a href=\\\"https:\\\/\\\/aobosteel.com\\\/is-p20-steel-weldable\\\/\\\">Is P20 steel weldable?<\\\/a><\\\/em>\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755007235081\",\"position\":20,\"url\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755007235081\",\"name\":\"Is P20 similar to 4140?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, they are not similar in their fundamental design, typical processing, and intended applications. For more information about this question, please read\u00a0<em><a href=\\\"https:\\\/\\\/aobosteel.com\\\/p20-steel-vs-4140\\\/\\\">P20 steel vs 4140<\\\/a><\\\/em>.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755007412492\",\"position\":21,\"url\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755007412492\",\"name\":\"Is P20 a high-carbon steel?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"P20 steel is\u00a0not\u00a0high-carbon steel.\u00a0Its carbon content generally falls within the range of\u00a0medium-carbon steels.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755007431517\",\"position\":22,\"url\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#faq-question-1755007431517\",\"name\":\"How do you stress relieve P20?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Stress relieving for P20 steel is typically recommended at temperatures between 705 and 730 \u00b0C (1300 and 1350 \u00b0F)\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Acero para herramientas P20 | 1.2311 | 3Cr2Mo - AoboSteel","description":"Conozca el acero para herramientas P20, sus propiedades y por qu\u00e9 es la opci\u00f3n preferida para la fabricaci\u00f3n de moldes y matrices de pl\u00e1stico.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/aobosteel.com\/es\/p20-tool-steel\/","og_locale":"es_MX","og_type":"article","og_title":"P20 Tool Steel | 1.2311 | 3Cr2Mo","og_description":"Learn about P20 tool steel, its properties, and why it is the preferred choice for manufacturing plastic 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es el acero para herramientas P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"P20 tool steel is a versatile, low-alloy tool steel known for its good toughness at moderate strength levels, excellent dimensional stability during heat treatment, and good polishability. It is typically sold in a pre-hardened condition.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006894869","position":2,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006894869","name":"\u00bfCu\u00e1les son las propiedades clave del acero P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Key properties of P20 steel include excellent dimensional stability during heat treatment, good polishability, and good toughness at moderate strength levels. It has a density of 0.284 lb\/in\u00b3 (7861 kg\/m\u00b3) and a machinability rating of 60-65% of a 1% carbon steel.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006907997","position":3,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006907997","name":"\u00bfCu\u00e1l es la dureza del acero P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"P20 steel is typically supplied with a Brinell hardness (HBW) of approximately 300, which is roughly equivalent to 30 Rockwell C (HRC). It can be tempered to achieve a Rockwell C hardness between 28 and 37. For more information about this question, please read\u00a0<em><a href=\"https:\/\/aobosteel.com\/p20-steel-hardness\/\">P20 steel hardness<\/a><\/em>.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006961029","position":4,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006961029","name":"\u00bfEl acero para herramientas P20 est\u00e1 pre-endurecido?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, P20 steel is typically supplied in a pre-hardened condition with a hardness of approximately 300 HBW. This allows for direct use in mold making without further hardening or heat treatment, cutting down on the running period and improving efficiency.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006978944","position":5,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006978944","name":"\u00bfCu\u00e1les son las aplicaciones comunes del acero para moldes P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"P20 mold steel is extensively used for plastic injection mold cavities and tooling, and for die casting dies for zinc. It is also ideal for large plastic molds. Other applications include die holders, backers, bolsters, hydroforming tools, and various components in automotive, mechanical engineering, and tool manufacturing (e.g., punches, milling cutters, turning tools).","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006980372","position":6,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006980372","name":"\u00bfCu\u00e1l es la esperanza de vida t\u00edpica del molde para el acero P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"For pre-hardened P20 steel (1.2311), the die life can reach 500,000 \u201cmode times\u201d (shots). Some vendors guarantee 100,000 shots, and P20 molds are known to run for thousands of parts.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006981139","position":7,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006981139","name":"\u00bfEl acero P20 es adecuado para pulir?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, P20 steel is known for its good polishability. It is capable of achieving a good polished finish, which is crucial for mold applications.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006982413","position":8,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006982413","name":"\u00bfSe puede nitrurar o carburar el acero P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, P20 tool steels are capable of being nitrided or carburized. Case hardening or nitriding is an option to achieve maximum surface hardness for applications such as compression molding plastic dies.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006983361","position":9,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006983361","name":"\u00bfSe utiliza el acero P20 para aplicaciones de alta temperatura?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"P20 tool steels are typically used for low-temperature applications, including injection molds. However, in the field of die-casting molds, P20\u2019s excellent thermal conductivity and thermal expansion coefficient allow it to resist the impact of high pressure and high temperature in mold manufacturing, ensuring precision and quality.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006984637","position":10,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006984637","name":"\u00bfC\u00f3mo se compara el acero P20 con el acero 4140 para aplicaciones de moldes?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"P20 steel offers excellent dimensional stability during heat treatment and good polishability, making it ideal for mold applications. In contrast, 4140 steel is renowned for its strength and impact resistance. While 4140 steel is generally used for high-stress parts like shafts and gears, it can sometimes replace P20 steel plate in certain mold industry applications.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006985554","position":11,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755006985554","name":"\u00bfC\u00f3mo se compara el acero P20 con el acero S50C para moldeo por inyecci\u00f3n?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"P20 is generally considered better than S50C for mold steel. For prototyping molds needing only thousands of pieces, S50C is acceptable, but for more than 10,000 pieces, P20 is preferable. P20 offers better machinability and mirror grinding performance and is more frequently recommended for plastic molds compared to S50C, which has low cold deformation plasticity and poor welding performance.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007105696","position":12,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007105696","name":"\u00bfEl acero P20 es m\u00e1s caro que el acero 4140?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, P20 steel is generally more expensive than 4140 steel. This is attributed to its specialized applications and chemical composition.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007106795","position":13,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007106795","name":"\u00bfSe puede utilizar el acero 4140 para aplicaciones de moldes?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, 4140 steel can be used for some mold applications, particularly those that require high strength and resistance to wear and tear. However, P20 is more commonly selected for molds due to its superior dimensional stability under heat treatment.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007107784","position":14,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007107784","name":"\u00bfCu\u00e1les son los diferentes tipos o equivalentes del acero P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Besides the standard AISI P20, it is known by international equivalents such as DIN 1.2311 and GB\/T 3Cr2Mo. There are also variants like P20+Ni (1.2738), which has added nickel for consistent hardness in larger sections and is easy to polish, and P20+S (1.2312), which has higher sulfur for improved machinability but is less suitable for polishing.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007149948","position":15,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007149948","name":"\u00bfQu\u00e9 normas se aplican al acero P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"In the USA, P20 steel generally adheres to the\u00a0ASTM A681 standard. In Europe, it\u2019s recognized by the\u00a0DIN EN ISO 4957 standard\u00a0(e.g., 1.2311 and 1.2312), and in China, the equivalent grade is\u00a03Cr2Mo\u00a0under the GB\/T 1299 standard.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007150840","position":16,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007150840","name":"\u00bfCu\u00e1l es la maquinabilidad del acero P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"P20 steel has a\u00a0machinability rating of 60-65%\u00a0when compared to a 1% carbon steel. It is noted for its\u00a0excellent cutting performance\u00a0and overall good machinability.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007154126","position":17,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007154126","name":"\u00bfEl acero P20 tiene buena soldabilidad?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, P20 tool steel has\u00a0good weldability.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007232699","position":18,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007232699","name":"\u00bfQu\u00e9 es similar al material P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"When looking for materials similar to P20, you\u2019ll primarily find a range of P20-modified steels, such as DIN 1.2738, 1.2311, 1.2312, and various branded versions, that build upon its properties, as well as other tool steels and stainless steels such as\u00a0<em><a href=\"https:\/\/aobosteel.com\/h13-tool-steel\/\">H13<\/a>(<a href=\"https:\/\/aobosteel.com\/h13-vs-p20-steel\/\">H13 vs P20 steel<\/a>)<\/em>, P21,\u00a0<em><a href=\"https:\/\/aobosteel.com\/a2-tool-steel\/\">A2<\/a><\/em>,\u00a0<a href=\"https:\/\/aobosteel.com\/d2-tool-steel\/\">D2<\/a>, and\u00a0<a href=\"https:\/\/aobosteel.com\/420-stainless-steel\/\">420<\/a>, that serve similar purposes in mold making but offer different balances of properties such as wear resistance, toughness, or corrosion resistance.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007233547","position":19,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007233547","name":"\u00bfEs soldable el P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, P20 steel is weldable, particularly for repair and fabrication, though specific precautions and techniques are recommended to ensure good results. For more information about this question, please read\u00a0<em><a href=\"https:\/\/aobosteel.com\/is-p20-steel-weldable\/\">Is P20 steel weldable?<\/a><\/em>","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007235081","position":20,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007235081","name":"\u00bfEs el P20 similar al 4140?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No, they are not similar in their fundamental design, typical processing, and intended applications. For more information about this question, please read\u00a0<em><a href=\"https:\/\/aobosteel.com\/p20-steel-vs-4140\/\">P20 steel vs 4140<\/a><\/em>.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007412492","position":21,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007412492","name":"\u00bfEl P20 es un acero con alto contenido de carbono?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"P20 steel is\u00a0not\u00a0high-carbon steel.\u00a0Its carbon content generally falls within the range of\u00a0medium-carbon steels.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007431517","position":22,"url":"https:\/\/aobosteel.com\/p20-tool-steel\/#faq-question-1755007431517","name":"\u00bfC\u00f3mo aliviar el estr\u00e9s P20?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Stress relieving for P20 steel is typically recommended at temperatures between 705 and 730 \u00b0C (1300 and 1350 \u00b0F)","inLanguage":"es"},"inLanguage":"es"}]}},"uagb_featured_image_src":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel-300x300.avif",300,300,true],"medium_large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel-12x12.avif",12,12,true]},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/es\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"P20 tool steel is a widely used type of tool steel, primarily known as a low-carbon mold steel. It is categorized as a plastic mold steel designed for machined cavities. The AISI (American Iron and Steel Institute) designation for P20 is UNS T51620. P20 is most frequently used for plastic dies and molds. It can&hellip;","rttpg_featured_image_url":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"landscape":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"portraits":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel-300x300.avif",300,300,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif",500,500,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel-12x12.avif",12,12,true]},"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/es\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"P20 tool steel is a widely used type of tool steel, primarily known as a low-carbon mold steel. It is categorized as a plastic mold steel designed for machined cavities. The AISI (American Iron and Steel Institute) designation for P20 is UNS T51620. P20 is most frequently used for plastic dies and molds. It can&hellip;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/pages\/9326","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/comments?post=9326"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/pages\/9326\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/media\/6593"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/media?parent=9326"}],"curies":[{"name":"gracias","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}