{"id":9326,"date":"2025-08-02T09:45:14","date_gmt":"2025-08-02T01:45:14","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9326"},"modified":"2026-06-26T09:49:03","modified_gmt":"2026-06-26T01:49:03","slug":"p20-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/p20-tool-steel\/","title":{"rendered":"Acero para herramientas P20 | 1.2311 | Proveedor de 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 popmake-16052\"><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 class=\"wp-block-paragraph\">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\u00a03Cr2Mo, Germany DIN 1.2311, Sweden ASSAB 618, and ISO 35CrMo2.<\/p>\n\n\n\n<h2 id=\"1-eael-table-of-content\" class=\"wp-block-heading\">1. Application<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plastic Molds and Dies. <\/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 id=\"2-eael-table-of-content\" class=\"wp-block-heading\">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 id=\"3-eael-table-of-content\" class=\"wp-block-heading\">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>\u00a0 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\u00a0tool steel heat treatment\u00a0results 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-7387b849 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 wp-block-paragraph\"><strong>Interested in P20? Please fill out the form below to contact us now!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f16042-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"16042\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/es\/wp-json\/wp\/v2\/pages\/9326#wpcf7-f16042-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"Contact form\" novalidate=\"novalidate\" data-status=\"init\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"16042\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.6\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"en_US\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f16042-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/fieldset>\n<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" autocomplete=\"name\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Your Name *\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span>\n<\/p>\n<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" autocomplete=\"email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Email *\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span>\n<\/p>\n<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"4\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"Message *\" name=\"your-message\"><\/textarea><\/span>\n<\/p>\n<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"Send Inquiry\" \/>\n<\/p><p style=\"display: none !important;\" class=\"akismet-fields-container\" data-prefix=\"_wpcf7_ak_\"><label>&#916;<textarea name=\"_wpcf7_ak_hp_textarea\" cols=\"45\" rows=\"8\" maxlength=\"100\"><\/textarea><\/label><input type=\"hidden\" id=\"ak_js_1\" name=\"_wpcf7_ak_js\" value=\"246\"\/><script>\ndocument.getElementById( \"ak_js_1\" ).setAttribute( \"value\", ( new Date() ).getTime() );\n<\/script>\n<\/p><input type='hidden' class='wpcf7-pum' value='{\"closepopup\":false,\"closedelay\":0,\"openpopup\":true,\"openpopup_id\":16052}' \/><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<\/form>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 id=\"4-eael-table-of-content\" class=\"wp-block-heading\">4. Heat Treatment<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 id=\"5-eael-table-of-content\" class=\"wp-block-heading\">4.1&nbsp;Carburization<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">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\u00a065 HRC, with the core hardness typically around\u00a045 HRC. Case depths can be controlled, generally\u00a0varying from 0.030 inches for smaller molds to 0.065 inches for large molds. We would like to remind you that the\u00a0resistance of carburized P20 material to softening during tempering is relatively low, similar to that of plain carbon steel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">Carburized P20 steel has a good combination of wear resistance, toughness, and polishability.<\/p>\n\n\n\n<h3 id=\"6-eael-table-of-content\" class=\"wp-block-heading\">4.2&nbsp;Preheating<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">We strongly recommend preheating P20 tool steel to a temperature of&nbsp;<strong>1200\u00b0F (650\u00b0C)<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">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 id=\"7-eael-table-of-content\" class=\"wp-block-heading\">4.3&nbsp;Hardening (Austenitizing)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The hardening temperature is\u00a0<strong>1525\u00b0F (830\u00b0C).<\/strong>\u00a0The soaking time is\u00a0<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 austenite, please refer to the explanation of\u00a0austenite\u00a0on Wikipedia.]<\/p>\n\n\n\n<h3 id=\"8-eael-table-of-content\" class=\"wp-block-heading\">4.4&nbsp;Quenching<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Material P20 steel is oil quenched. Oil quenching 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\u00a0<strong>150\u00b0F (66\u00b0C)<\/strong>\u00a0if air-hardened, or\u00a0<strong>150-200\u00b0F (66-93\u00b0C)<\/strong>\u00a0if liquid-quenched, and then tempered immediately.<\/p>\n\n\n\n<h3 id=\"9-eael-table-of-content\" class=\"wp-block-heading\">4.5&nbsp;Tempering&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 id=\"10-eael-table-of-content\" class=\"wp-block-heading\">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 class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">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 id=\"h-5-p20-steel-technical-data-sheet\" class=\"wp-block-heading\">5. P20 Steel Technical Data Sheet<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">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 wp-block-paragraph\"><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 wp-block-paragraph\"><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 id=\"11-eael-table-of-content\" class=\"wp-block-heading\">6. Supply forms and dimensions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">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 class=\"wp-block-paragraph\">UT testing: Sep 1921-84 D\/d, E\/e.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Surface Treatment: original black, peeled, machined\/turned, polished, grounded, or milled surface finishes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Inventory Status: We do not maintain a stock. We arrange production based on customer orders.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Delivery time: Electric Arc Furnace (EAF) materials are 30-45 days.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 popmake-16052\"><a class=\"wp-block-button__link wp-element-button\">Open RFQ Form<\/a><\/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":{"_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 v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>P20 Tool Steel | 1.2311 | 3Cr2Mo Supplier - 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 Supplier\" \/>\n<meta property=\"og:description\" content=\"Learn about P20 tool steel, its properties, and why it is the preferred choice for manufacturing plastic molds and dies.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aobosteel.com\/es\/p20-tool-steel\/\" \/>\n<meta property=\"og:site_name\" content=\"AoboSteel\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/profile.php?id=61565368220197\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-26T01:49:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/p20-mold-steel.avif\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"500\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data1\" content=\"11 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"TechArticle\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/\"},\"author\":{\"name\":\"Evan\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#\\\/schema\\\/person\\\/96118415c30ca6bb52eaf1127b052ef7\"},\"headline\":\"P20 Tool Steel | 1.2311 | 3Cr2Mo Supplier\",\"datePublished\":\"2025-08-02T01:45:14+00:00\",\"dateModified\":\"2026-06-26T01:49:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/\"},\"wordCount\":1218,\"publisher\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/aobosteel.com\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/p20-mold-steel.avif\",\"inLanguage\":\"es\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/\",\"url\":\"https:\\\/\\\/aobosteel.com\\\/p20-tool-steel\\\/\",\"name\":\"P20 Tool Steel | 1.2311 | 3Cr2Mo Supplier - 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