{"id":24760,"date":"2026-10-30T20:03:38","date_gmt":"2026-10-30T12:03:38","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=24760"},"modified":"2026-10-30T23:11:34","modified_gmt":"2026-10-30T15:11:34","slug":"1-2344-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/1-2344-tool-steel\/","title":{"rendered":"1.2344 Tool Steel (X40CrMoV5-1 | H13) Hot Work Supplier | Aobo Steel"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull is-light e2344-cover\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-block-cover__image-background wp-image-23814\" alt=\"1.2344 ESR die steel plates stacked in a warehouse, plate ends painted 12344 ESR with the section size and weight\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-h13esr-hero-plate.jpg\" width=\"2560\" height=\"1920\" data-object-fit=\"cover\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-h13esr-hero-plate-300x225.jpg 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-h13esr-hero-plate-768x576.jpg 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-h13esr-hero-plate-1024x768.jpg 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-h13esr-hero-plate-1536x1152.jpg 1536w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-h13esr-hero-plate-2048x1536.jpg 2048w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-h13esr-hero-plate.jpg 2560w\" sizes=\"auto, (max-width: 768px) 100vw, 2560px\"\/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<style id=\"aobo-2344\" data-noptimize=\"1\">\n\n\n\/* ===== 1.2344 tool steel product page \u2014 header + hero fill the first viewport; theme footer follows ===== *\/\n\/* every rule is scoped to .e2344; the theme footer is kept on this page (page-id-24760) *\/\n.e2344 *,.e2344 *::before,.e2344 *::after{box-sizing:border-box}\n.e2344{font-size:16px;line-height:1.7;color:#fff}\n\n\/* --- one-screen hero; the theme footer stays below it (Evan 2026-10-20) --- *\/\nbody.page-id-24760 .site-content{padding-bottom:0!important;margin-bottom:0!important}\nbody.page-id-24760 .site-footer,body.page-id-24760 #colophon{display:block!important}\n\n\/* --- hero: full-bleed, fills everything below the theme header (148px desktop \/ 74px mobile) --- *\/\n.e2344-cover{position:relative;isolation:isolate;overflow:hidden;display:flex;align-items:center;padding:0!important;\n  min-height:calc(100svh - 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74px)}\n}\n\/* logged-in visitors carry the 32px WP admin bar \u2014 keep header + hero inside one screen *\/\nbody.admin-bar .e2344-cover{min-height:calc(100svh - 180px)}\n@media (max-width:900px){\n  .e2344-in{padding:12px 13px 7px;gap:9px}\n  .e2344-eyebrow{font-size:10.2px;margin-bottom:4px}\n  .e2344-h1{font-size:23px!important;margin-bottom:4px!important}\n  .e2344-sub{font-size:15px;margin-bottom:6px}\n  .e2344-lede{font-size:13px;margin-bottom:7px;line-height:1.38}\n  .e2344-spec div{grid-template-columns:92px 1fr;font-size:11.8px;padding:4px 9px;gap:8px}\n  .e2344-also{display:none}\n  .e2344-card{padding:10px 12px 9px}\n  .e2344-card h2{font-size:15px!important}\n  .e2344-cardsub{margin-bottom:7px;font-size:11.6px}\n  .e2344-card input[type=text],.e2344-card input[type=email],.e2344-card input[type=tel],.e2344-card textarea{padding:7px 9px;font-size:12.8px}\n  .e2344-card form p{margin-bottom:5px}\n  .e2344-card textarea{min-height:38px}\n  .e2344-card input[type=submit]{padding:10px 12px;font-size:14px}\n}\n\/* small phones: one tier tighter so specs + form still fit one screen *\/\n@media (max-width:420px){\n  .e2344-spec .row-docs,.e2344-spec .row-delivery{display:none}\n  .e2344-spec div{font-size:11.3px;padding:3px 8px}\n  .e2344-h1{font-size:22px!important}\n  .e2344-lede{display:none}\n  .e2344-card{padding:9px 11px 8px}\n  .e2344-card form p{margin-bottom:4px}\n  .e2344-card input[type=text],.e2344-card input[type=email],.e2344-card input[type=tel],.e2344-card textarea{padding:6px 8px;font-size:12.4px}\n  .e2344-card textarea{min-height:30px}\n  .e2344-card input[type=submit]{padding:9px 12px;font-size:13.6px}\n  .e2344-or{margin-top:6px;font-size:11.4px}\n}\n\/* very small phones (360px class): last tier so the page still does not scroll *\/\n@media (max-width:380px){\n  .e2344-eyebrow{display:none}\n  .e2344-in{gap:6px;padding:6px 10px 4px}\n  .e2344-h1{font-size:21px!important}\n  .e2344-sub{font-size:13px;margin-bottom:4px}\n  .e2344-spec div{font-size:11.1px;padding:2px 7px;gap:7px}\n  .e2344-card{padding:7px 9px 6px}\n  .e2344-cardsub{margin-bottom:5px}\n  .e2344-card form p{margin-bottom:3px}\n  .e2344-card input[type=text],.e2344-card input[type=email],.e2344-card input[type=tel],.e2344-card textarea{padding:5px 8px;font-size:12.2px}\n  .e2344-card textarea{min-height:22px}\n  .e2344-card input[type=submit]{padding:8px 11px;font-size:13.4px}\n  .e2344-or{margin-top:5px;font-size:11.2px}\n}\n\n\n<\/style>\n<div class=\"e2344-in\">\n    <div class=\"e2344-copy\">\n      <p class=\"e2344-eyebrow\">Aobo Steel \u00b7 Tool Steel Supplier \u00b7 Huangshi, China<\/p>\n      <h1 class=\"e2344-h1\">1.2344 Tool Steel (X40CrMoV5-1 \/ AISI H13)<\/h1>\n      <p class=\"e2344-sub\">EN 10027-2 material number \u00b7 X40CrMoV5-1 \u00b7 AISI H13 \u00b7 JIS SKD61 \u00b7 4Cr5MoSiV1<\/p>\n      <p class=\"e2344-lede\">1.2344 is the EN 10027-2 material number for the alloy hot work tool steel sold internationally as AISI H13 and JIS SKD61. Buyers who search by the number usually want to know what the digits mean, whether the steel on their drawing is the grade they think it is, and what can be ordered against it. The <a href=\"https:\/\/aobosteel.com\/h13-steel-equivalent-grades\/\">equivalent grades page<\/a> sets out every designation this steel carries and where each one is used.<\/p>\n      <div class=\"e2344-spec\"><div class=\"hl\"><b>EN number<\/b><span>1.2344 \u2014 EN 10027-2, steel group 23 \u00b7 EN 10027-1 name X40CrMoV5-1<\/span><\/div><div><b>Grade<\/b><span>AISI H13 \u00b7 JIS SKD61 \u00b7 GB 4Cr5MoSiV1 \u00b7 hot work tool steel<\/span><\/div><div class=\"hl\"><b>Forms<\/b><span>Round bar \u00b7 flat bar \u00b7 plate \u00b7 forged block<\/span><\/div><div><b>Surface<\/b><span>Black \/ turned \/ polished on request<\/span><\/div><div><b>Delivery<\/b><span>Spheroidised annealed \u2264 229 HBW \u00b7 ESR on request<\/span><\/div><div><b>Documents<\/b><span>MTC EN 10204 3.1 per heat \u00b7 UT SEP 1921-82 D\/d or E\/e<\/span><\/div><div><b>Order size<\/b><span>MOQ 5 t \u00b7 mixed sizes in one container (~26 t per 20GP)<\/span><\/div><\/div>\n      <p class=\"e2344-also\">Also supplied: <a href=\"https:\/\/aobosteel.com\/h13-mold-steel\/\">H13 mold steel<\/a> for mold inserts and cores, and <a href=\"https:\/\/aobosteel.com\/esr-tool-steel\/\">ESR tool steel<\/a> where a cleaner melt is specified.<\/p>\n    <\/div>\n\n    <div class=\"e2344-card\" id=\"e2344-form\">\n      <h2>Request price &amp; delivery<\/h2>\n      <p class=\"e2344-cardsub\">Send the sizes, quantity and destination port. We confirm price and delivery within one working day.<\/p>\n      \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=\"\/ko\/wp-json\/wp\/v2\/pages\/24760#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=\"6.2.4.1\" \/><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<div class=\"wpcf7-turnstile cf-turnstile\" data-sitekey=\"0x4AAAAAAFMY32JbOfIdWijB\" data-response-field-name=\"_wpcf7_turnstile_response\"><\/div>\n\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=\"228\"\/><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\n      <p class=\"e2344-or\">or <a href=\"https:\/\/wa.me\/8618062945370\">WhatsApp +86 180 6294 5370<\/a> \u00b7 <a href=\"mailto:sales@aobosteel.com\">sales@aobosteel.com<\/a><\/p>\n    <\/div>\n  <\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n\n<h2 class=\"wp-block-heading\">How the EN Material Number 1.2344 Is Built<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">EN 10027-2 assigns every steel a number of a fixed number of digits, which suits data processing better than a descriptive name. The number takes the form 1.XXXX, where the 1. refers to steel and the two digits that follow it are the steel group number. The number 1.2344 therefore carries the group number 23, and the descriptive name for the same material under EN 10027-1 is X40CrMoV5-1. ISO 4957 prints the number and the name in the same row of its grade table, so the <a href=\"https:\/\/aobosteel.com\/iso-4957-tool-steel-grades\/\">ISO 4957 grade list<\/a> is where the two are read against each other.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Source, Handbook of Comparative World Steel Standards, Third Edition, John E. Bringas, Editor, ASTM International, 2004.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Tool Steel Grades That Carry a 1.23 Number<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The tool steel grades that carry a number beginning 1.23 are listed below with the EN steel name, the Japanese grade, and the American name where ISO 4957 prints one. It is the quickest way to confirm that a number on a drawing belongs to this grade and that a neighbouring number does not.<\/p>\n\n\n\n<div class=\"wp-block-group is-content-justification-left is-layout-constrained wp-container-core-group-is-layout-8e727e61 wp-block-group-is-layout-constrained\">\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th>EN number<\/th><th>EN steel name<\/th><th class=\"has-text-align-center\">JIS grade<\/th><th>Normally quoted as<\/th><\/tr><\/thead><tbody><tr><td>1.2302<\/td><td>35CrMo7<\/td><td class=\"has-text-align-center\">&mdash;<\/td><td>&mdash;<\/td><\/tr><tr><td>1.2316<\/td><td>X38CrMo16<\/td><td class=\"has-text-align-center\">&mdash;<\/td><td>&mdash;<\/td><\/tr><tr><td>1.2343<\/td><td>X37CrMoV5-1<\/td><td class=\"has-text-align-center\">SKD6<\/td><td>AISI H11<\/td><\/tr><tr><td><strong>1.2344<\/strong><\/td><td><strong>X40CrMoV5-1<\/strong><\/td><td class=\"has-text-align-center\"><strong>SKD61<\/strong><\/td><td><strong>AISI H13<\/strong><\/td><\/tr><tr><td>1.2355<\/td><td>50CrMoV13-15<\/td><td class=\"has-text-align-center\">&mdash;<\/td><td>&mdash;<\/td><\/tr><tr><td>1.2363<\/td><td>X100CrMoV5<\/td><td class=\"has-text-align-center\">SKD12<\/td><td>AISI A2<\/td><\/tr><tr><td>1.2365<\/td><td>32CrMoV12-28<\/td><td class=\"has-text-align-center\">SKD7<\/td><td>&mdash;<\/td><\/tr><tr><td>1.2367<\/td><td>X38CrMoV5-3<\/td><td class=\"has-text-align-center\">&mdash;<\/td><td>&mdash;<\/td><\/tr><tr><td>1.2379<\/td><td>X153CrMoV12<\/td><td class=\"has-text-align-center\">&mdash;<\/td><td>AISI D2<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Two numbers in that list are easy to mix up. 1.2343 is X37CrMoV5-1, the H11 line, a different alloy with a different place in the shop, and 1.2379 is the D2 cold work grade. A drawing that calls up 1.2344 calls up H13, and the <a href=\"https:\/\/aobosteel.com\/h13-tool-steel\/\">H13 tool steel page<\/a> carries the grade in full with its supply overview.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Source, ISO 4957:1999 (BS EN ISO 4957:2000), Tool Steels, as reproduced in Handbook of Mechanical Alloy Design (G. E. Totten, L. Xie and K. Funatani, eds.), Marcel Dekker, 2004.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ordering 1.2344 Tool Steel<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">We supply 1.2344 in round bar, flat bar, plate and forged block. The number is what appears on the order, on the mill certificate and on the goods paperwork, so it is worth quoting it together with the standard the mill works to and the delivery condition required. The <a href=\"https:\/\/aobosteel.com\/tool-steel-quality-verification\/\">tool steel quality verification page<\/a> shows what we check on a certificate before the batch leaves, including the grade, the heat number and the ultrasonic result.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">European mills market the same steel under their own codes, for example W302 at B&ouml;hler, GS-344 at Thyssen and 8402 at Assab, and the <a href=\"https:\/\/aobosteel.com\/imported-mold-steel-brand-cross-reference\/\">imported mold steel brand cross-reference<\/a> lists the codes for this grade with the delivery hardness each mill states. ESR is available on request, and our <a href=\"https:\/\/aobosteel.com\/1-2344-esr-h13-aluminum-extrusion-distributors\/\">1.2344 ESR page for extrusion distributors<\/a> covers that route and the tooling it is bought for.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where 1.2344 Tool Steel Is Used<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">1.2344 is a hot work grade, so it serves tooling that runs hot. Aluminium and magnesium die casting dies take it for its resistance to heat checking and washout, extrusion dies and tooling for the pressure and thermal cycling of the press, hot forging dies for the balance between impact toughness and hot hardness, and hot shear blades, die inserts and core pins for the wear and toughness the smaller components need. The <a href=\"https:\/\/aobosteel.com\/h13-steel-properties\/\">H13 steel properties page<\/a> sets out the working hardness and the main failure risk for each of those uses, and the <a href=\"https:\/\/aobosteel.com\/selection-of-tool-steel-for-hot-stamping\/\">hot stamping die steel selection page<\/a> covers the dies used in press hardening.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Technical Data Behind 1.2344<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The specified chemistry for this grade is on the <a href=\"https:\/\/aobosteel.com\/h13-steel-composition\/\">H13 chemical composition page<\/a>, with the AISI, DIN and JIS ranges side by side. The <a href=\"https:\/\/aobosteel.com\/h13-steel-heat-treatment\/\">H13 heat treatment guide<\/a> covers annealing, hardening, quenching and tempering with the working hardness for each step, and the <a href=\"https:\/\/aobosteel.com\/hot-work-tool-steel-physical-properties\/\">hot work tool steel physical properties<\/a> page carries the thermal and mechanical data for 1.2344 and the grades around it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faq\">FAQ<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-10000000000\"><strong class=\"schema-faq-question\"><strong>What does the number 1.2344 mean?<\/strong><\/strong> <p class=\"schema-faq-answer\">1.2344 is the EN 10027-2 material number for the alloy hot work tool steel sold internationally as AISI H13 and JIS SKD61. Under EN 10027-1 the same steel carries the descriptive name X40CrMoV5-1, and ISO 4957 lists the grade under that name with 1.2344 in the EN 10027-2 column.<\/p> <\/div><div class=\"schema-faq-section\" id=\"faq-question-10100000000\"><strong class=\"schema-faq-question\"><strong>How is 1.2344 different from 1.2343?<\/strong><\/strong> <p class=\"schema-faq-answer\">They are separate alloys that carry numbers in the same group. 1.2343 is X37CrMoV5-1, the H11 line, with a different alloying content and a different place in the shop. A drawing that calls up 1.2343 is not a drawing for H13.<\/p> <\/div><div class=\"schema-faq-section\" id=\"faq-question-10200000000\"><strong class=\"schema-faq-question\"><strong>Can 1.2344 be supplied as ESR?<\/strong><\/strong> <p class=\"schema-faq-answer\">Yes, ESR is available on request. That route takes longer than a conventional melt and it suits heavy sections where segregation and transverse toughness decide how long a die lasts.<\/p> <\/div><div class=\"schema-faq-section\" id=\"faq-question-10300000000\"><strong class=\"schema-faq-question\"><strong>Which grades carry a number beginning 1.23?<\/strong><\/strong> <p class=\"schema-faq-answer\">The tool steel grades in ISO 4957 that carry a 1.23 number are listed in the table above. They include 1.2343 for the H11 line, 1.2365 and 1.2367 for other hot work grades, 1.2363 for the A2 cold work grade and 1.2379 for D2.<\/p> <\/div><\/div>\n\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>How the EN Material Number 1.2344 Is Built EN 10027-2 assigns every steel a number of a fixed number of digits, which suits data processing better than a descriptive name. The number takes the form 1.XXXX, where the 1. refers to steel and the two digits that follow it are the steel group number. The [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"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":"full-width-container","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":""},"class_list":["post-24760","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>1.2344 Tool Steel (X40CrMoV5-1 \/ AISI H13) Supplier | Aobo Steel<\/title>\n<meta name=\"description\" content=\"1.2344 tool steel is the EN 10027-2 number for X40CrMoV5-1, sold as AISI H13 and JIS SKD61. 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That route takes longer than a conventional melt and it suits heavy sections where segregation and transverse toughness decide how long a die lasts.\",\"inLanguage\":\"ko-KR\"},\"inLanguage\":\"ko-KR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/1-2344-tool-steel\\\/#faq-question-10300000000\",\"position\":4,\"url\":\"https:\\\/\\\/aobosteel.com\\\/1-2344-tool-steel\\\/#faq-question-10300000000\",\"name\":\"Which grades carry a number beginning 1.23?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The tool steel grades in ISO 4957 that carry a 1.23 number are listed in the table above. 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Tool Steel (X40CrMoV5-1 | H13) Hot Work Supplier | Aobo 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1.2344\ub294 \ubb34\uc5c7\uc744 \uc758\ubbf8\ud569\ub2c8\uae4c?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"1.2344 is the EN 10027-2 material number for the alloy hot work tool steel sold internationally as AISI H13 and JIS SKD61. Under EN 10027-1 the same steel carries the descriptive name X40CrMoV5-1, and ISO 4957 lists the grade under that name with 1.2344 in the EN 10027-2 column.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/1-2344-tool-steel\/#faq-question-10100000000","position":2,"url":"https:\/\/aobosteel.com\/1-2344-tool-steel\/#faq-question-10100000000","name":"1.2344\ub294 1.2343\uacfc \uc5b4\ub5bb\uac8c \ub2e4\ub985\ub2c8\uae4c?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"They are separate alloys that carry numbers in the same group. 1.2343 is X37CrMoV5-1, the H11 line, with a different alloying content and a different place in the shop. A drawing that calls up 1.2343 is not a drawing for H13.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/1-2344-tool-steel\/#faq-question-10200000000","position":3,"url":"https:\/\/aobosteel.com\/1-2344-tool-steel\/#faq-question-10200000000","name":"1.2344\ub97c ESR\ub85c \uacf5\uae09\ud560 \uc218 \uc788\uc2b5\ub2c8\uae4c?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, ESR is available on request. That route takes longer than a conventional melt and it suits heavy sections where segregation and transverse toughness decide how long a die lasts.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/1-2344-tool-steel\/#faq-question-10300000000","position":4,"url":"https:\/\/aobosteel.com\/1-2344-tool-steel\/#faq-question-10300000000","name":"1.23\uc73c\ub85c \uc2dc\uc791\ud558\ub294 \ubc88\ud638\ub97c \uac00\uc9c0\ub294 \ub4f1\uae09\uc740 \ubb34\uc5c7\uc785\ub2c8\uae4c?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The tool steel grades in ISO 4957 that carry a 1.23 number are listed in the table above. They include 1.2343 for the H11 line, 1.2365 and 1.2367 for other hot work grades, 1.2363 for the A2 cold work grade and 1.2379 for D2.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"}]}},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/ko\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"How the EN Material Number 1.2344 Is Built EN 10027-2 assigns every steel a number of a fixed number of digits, which suits data processing better than a descriptive name. The number takes the form 1.XXXX, where the 1. refers to steel and the two digits that follow it are the steel group number. The&hellip;","rttpg_featured_image_url":null,"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/ko\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"How the EN Material Number 1.2344 Is Built EN 10027-2 assigns every steel a number of a fixed number of digits, which suits data processing better than a descriptive name. The number takes the form 1.XXXX, where the 1. refers to steel and the two digits that follow it are the steel group number. The&hellip;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages\/24760","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/comments?post=24760"}],"version-history":[{"count":20,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages\/24760\/revisions"}],"predecessor-version":[{"id":24807,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages\/24760\/revisions\/24807"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/media?parent=24760"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}