{"id":24229,"date":"2026-10-26T12:53:38","date_gmt":"2026-10-26T04:53:38","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=24229"},"modified":"2026-10-27T18:40:19","modified_gmt":"2026-10-27T10:40:19","slug":"home-2026","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/","title":{"rendered":"Aobo Steel &#8211; Tool Steel Supplier in China"},"content":{"rendered":"\n<div class=\"wp-block-cover alignfull\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1920\" class=\"wp-block-cover__image-background wp-image-24563 size-full\" alt=\"Forged H13 (1.2344) tool steel round bars, cut ends marked with grade and size, stacked in the mill\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/hero-forged-round-bars-h13-mill-2026.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/hero-forged-round-bars-h13-mill-2026.jpg 2560w, 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textarea{min-height:58px}\n}\n@media (max-width:480px){\n  .aoboh-lede{font-size:13.4px}\n  .aoboh-h1{font-size:24px!important}\n  .aoboh-hero{padding:16px 14px 14px}\n}\n\/* \u9996\u5c4f banner \u53cc\u56fe\u81ea\u52a8\u8f6e\u64ad\uff08\u539f\u89c6\u9891\u4f4d\u6362\u6210\u4e24\u5f20\u5b9e\u62cd\uff09\uff1b\u6587\u5b57\u4e0e\u8be2\u4ef7\u5361\u4e0d\u52a8 *\/\n.wp-block-cover:has(.aoboh-hero){background-color:#0b1016}\n.wp-block-cover:has(.aoboh-hero) .wp-block-cover__background{opacity:0!important}\n.wp-block-cover:has(.aoboh-hero) img.wp-block-cover__image-background{position:absolute;inset:0;width:100%;height:100%;\n  object-fit:cover;transition:opacity 1.3s ease-in-out;z-index:0}\n.wp-block-cover:has(.aoboh-hero) img.aobo-slide-a{object-position:50% 55%}\n.wp-block-cover:has(.aoboh-hero) img.aobo-slide-b{object-position:50% 22%}\n<\/style>\n<div class=\"aoboh-hero\">\n  <div class=\"aoboh-l\">\n    <h1 class=\"aoboh-h1\">Aobo Steel <br>Tool Steel Supplier in China, <br class=\"aoboh-h1-b\">Serving Worldwide<\/h1>\n    <p class=\"aoboh-lede\">Forged &amp; hot-rolled tool steel bars \u2014 annealed, SEP 1921-82 D\/d, mill test certificate with every heat.<\/p>\n    <div class=\"aoboh-spec\"><div class=\"aoboh-spec-h\"><span class=\"aoboh-spec-l\">Grades we supply<\/span><span class=\"aoboh-spec-u\">AISI \/ DIN \/ JIS<\/span><\/div><ul>\n      <li><b>D2<\/b><i>|<\/i>1.2379<i>|<\/i>SKD11<\/li>\n      <li><b>D3<\/b><i>|<\/i>1.2080<i>|<\/i>SKD1<\/li>\n      <li><b>D6<\/b><i>|<\/i>1.2436<i>|<\/i>SKD2<\/li>\n      <li><b>A2<\/b><i>|<\/i>1.2363<i>|<\/i>SKD12<\/li>\n      <li><b>O1<\/b><i>|<\/i>1.2510<i>|<\/i>SKS3<\/li>\n      <li><b>O2<\/b><i>|<\/i>1.2842<\/li>\n      <li><b>S1<\/b><i>|<\/i>1.2550<\/li>\n      <li><b>S7<\/b><i>|<\/i>1.2355<\/li>\n      <li><b>DC53<\/b><\/li>\n      <li><b>H10<\/b><i>|<\/i>1.2365<i>|<\/i>SKD7<\/li>\n      <li><b>H11<\/b><i>|<\/i>1.2343<i>|<\/i>SKD6<\/li>\n      <li><b>H13<\/b><i>|<\/i>1.2344<i>|<\/i>SKD61<\/li>\n      <li><b>H21<\/b><i>|<\/i>1.2581<i>|<\/i>SKD7<\/li>\n      <li><b>L6<\/b><i>|<\/i>1.2714<i>|<\/i>SKT4<\/li>\n      <li><b>52100<\/b><i>|<\/i>1.3505<\/li>\n      <li><b>M2<\/b><i>|<\/i>1.3343<i>|<\/i>SKH51<\/li>\n      <li><b>M35<\/b><i>|<\/i>1.3243<i>|<\/i>SKH55<\/li>\n      <li><b>M42<\/b><i>|<\/i>1.3247<i>|<\/i>SKH59<\/li>\n      <li><b>P20<\/b><i>|<\/i>1.2311<\/li>\n      <li><b>P20+Ni<\/b><i>|<\/i>1.2738<\/li>\n      <li><b>420<\/b><i>|<\/i>1.2083<\/li>\n      <li><b>440C<\/b><i>|<\/i>1.4125<i>|<\/i>SUS440C<\/li>\n    <\/ul><\/div>\n    <p class=\"aoboh-check\"><i>\u2713<\/i><span>100% UT Tested Quality Assurance<\/span><\/p>\n    <p class=\"aoboh-check\"><i>\u2713<\/i><span>MTC (EN 10204 3.1) with Every Heat<\/span><\/p>\n    <p class=\"aoboh-check\"><i>\u2713<\/i><span>20+ Years Forging Heritage in Huangshi<\/span><\/p>\n  <\/div>\n  <div class=\"aoboh-card\">\n    <p class=\"aoboh-card-h\">Get a quote in 24 hours<\/p>\n    <p class=\"aoboh-card-sub\">Send the grade, size and quantity. We reply with price, mill test certificate and lead time.<\/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=\"\/pt\/wp-json\/wp\/v2\/pages\/24229#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=\"83\"\/><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=\"aoboh-alt\">Or email <a href=\"mailto:sales@aobosteel.com\">sales@aobosteel.com<\/a><\/p>\n  <\/div>\n<\/div>\n<script>\n(function(){\n  function patchPum(){\n    var els=document.querySelectorAll('.aoboh-card input[name=\"wpcf7-pum\"]');\n    for(var i=0;i<els.length;i++){\n      els[i].value='{\"closepopup\":false,\"closedelay\":0,\"openpopup\":false,\"openpopup_id\":0}';\n    }\n  }\n  if(document.readyState!=='loading'){patchPum();}else{document.addEventListener('DOMContentLoaded',patchPum);}\n})();\n\n(function(){\n  var hero=document.querySelector('.aoboh-hero');\n  var cover=hero?hero.closest('.wp-block-cover'):null;\n  if(!cover){return;}\n  var base=cover.querySelector('img.wp-block-cover__image-background');\n  if(!base){return;}\n  base.classList.add('aobo-slide-a');\n  base.setAttribute('loading','eager');\n  base.setAttribute('fetchpriority','high');\n  var img=document.createElement('img');\n  img.className='wp-block-cover__image-background aobo-slide-b';\n  img.alt=\"D2 (1.2379) tool steel 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li{margin:0!important;padding:0!important;list-style:none!important}\n.aoboext-spec b{display:block;font-size:10.4px;line-height:1.4;letter-spacing:.13em;text-transform:uppercase;color:#9dc0e6;font-weight:600;margin:0 0 1px}\n.aoboext-spec span{display:block;font-size:14px;line-height:1.45;color:#fff}\n.aoboext-also{margin:0!important;font-size:12.9px;line-height:1.55;color:#c6d9ee!important}\n.aoboext-also a{color:#fff!important;text-decoration:underline;text-underline-offset:2px}\n.aoboext-card{background:#fff;border-radius:12px;color:#0f1620;padding:17px 18px 15px;box-shadow:0 14px 40px rgba(0,0,0,.36);text-shadow:none}\n.aoboext-card-h{margin:0 0 3px!important;font-size:18px!important;line-height:1.25!important;font-weight:700!important;color:#0f1620!important}\n.aoboext-card-sub{margin:0 0 10px!important;font-size:12.2px;line-height:1.45;color:#5a6b7d!important}\n.aoboext-card form{margin:0}\n.aoboext-card form p{margin:0 0 5px}\n.aoboext-card .wpcf7-form-control-wrap{display:block}\n.aoboext-card input[type=text],.aoboext-card input[type=email],.aoboext-card input[type=tel],.aoboext-card textarea{\n  width:100%;font:inherit;font-size:13.2px;color:#0f1620;background:#f6f8fb;border:1px solid #cfd9e6;border-radius:6px;padding:7px 9px;margin:0;box-shadow:none}\n.aoboext-card textarea{resize:vertical;min-height:54px}\n.aoboext-card input[type=submit]{width:100%;background:#074fd0;color:#fff;border:0;border-radius:6px;padding:10px 12px;\n  font-size:14.2px;font-weight:700;font-family:inherit;cursor:pointer;letter-spacing:.01em}\n.aoboext-card input[type=submit]:hover{background:#063c9e}\n.aoboext-card .cf-turnstile{margin:0 0 7px}\n.aoboext-card .wpcf7-not-valid-tip{font-size:11.6px;color:#c62828;margin-top:2px}\n.aoboext-or{margin:8px 0 0!important;font-size:11.6px;line-height:1.4;color:#5a6b7d!important;text-align:center}\n.aoboext-or a{color:#1f5fd0!important;text-decoration:none;font-weight:600}\n@media (max-width:1080px){.aoboext{grid-template-columns:320px 1fr;gap:30px}}\n@media (max-width:960px){\n  .wp-block-cover:has(.aoboext){min-height:0}\n  .wp-block-cover:has(.aoboext) img.wp-block-cover__image-background{object-position:50% 52%}\n  .wp-block-cover:has(.aoboext)::before{background:linear-gradient(180deg,rgba(7,14,22,.74) 0%,rgba(7,14,22,.88) 100%)}\n  .aoboext{grid-template-columns:1fr;gap:18px;padding:26px 16px 28px}\n  .aoboext-copy{order:1}\n  .aoboext-form{order:2;max-width:none;justify-self:stretch}\n  .aoboext-card{max-width:none;padding:16px 16px 14px}\n  .aoboext-h2{font-size:26px!important}\n  .aoboext-lede{font-size:14.4px}\n  .aoboext-spec{grid-template-columns:1fr;gap:7px}\n  .aoboext-spec span{font-size:13.4px}\n  .aoboext-card input[type=text],.aoboext-card input[type=email],.aoboext-card textarea{font-size:16px;padding:8px 10px}\n}\n<\/style>\n<div class=\"aoboext\">\n  <div class=\"aoboext-form\">\n    <div class=\"aoboext-card\" id=\"aoboext-form\">\n      <p class=\"aoboext-card-h\">Request price &amp; delivery<\/p>\n      <p class=\"aoboext-card-sub\">Tell us the diameters, quantity and destination port \u2014 we confirm price, sizes and delivery within one working day.<\/p>\n      \n<div class=\"wpcf7 no-js\" id=\"wpcf7-f16042-o2\" 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=\"\/pt\/wp-json\/wp\/v2\/pages\/24229#wpcf7-f16042-o2\" 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-o2\" \/><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_2\" name=\"_wpcf7_ak_js\" value=\"178\"\/><script>\ndocument.getElementById( \"ak_js_2\" ).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=\"aoboext-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 class=\"aoboext-copy\">\n    <p class=\"aoboext-eyebrow\">For aluminium extrusion die shops &amp; steel stockholders<\/p>\n    <h2 class=\"aoboext-h2\">1.2344 ESR Die Steel for Aluminium Extrusion Tooling<\/h2>\n    <p class=\"aoboext-sub\">DIN 1.2344 \/ X40CrMoV5-1 \u2014 AISI H13 \/ JIS SKD61 equivalent \u00b7 electro-slag remelted<\/p>\n    <p class=\"aoboext-lede\">ESR die steel for die holders, mandrels, <a href=\"https:\/\/aobosteel.com\/h13-forged-rings\/\">container liners<\/a>, backers and bolsters. Supplied annealed and turned, heat number on every bar, cut to length on request.<\/p>\n    <ul class=\"aoboext-spec\">\n      <li><b>Grade<\/b><span>DIN 1.2344 \u00b7 X40CrMoV5-1 (AISI H13 \u00b7 SKD61 \u00b7 4Cr5MoSiV1)<\/span><\/li>\n      <li><b>Sizes<\/b><span>\u00d820 \u2013 600 mm \u2014 forged and turned<\/span><\/li>\n      <li><b>Length<\/b><span>2 \u2013 5.5 m mill length, or cut to your list<\/span><\/li>\n      <li><b>Surface<\/b><span>Turned \/ peeled \u00b7 black or polished on request<\/span><\/li>\n      <li><b>Delivery<\/b><span>Spheroidized annealed \u2264 229\u2013235 HB \u00b7 EAF + LF + VD + ESR<\/span><\/li>\n      <li><b>Documents<\/b><span>MTC EN 10204 3.1 per heat \u00b7 UT SEP 1921-82 D\/d or E\/e<\/span><\/li>\n      <li><b>Order size<\/b><span>MOQ 5 t \u2014 mixed sizes supported in one container<\/span><\/li>\n    <\/ul>\n    <p class=\"aoboext-also\">Also supplied: <a href=\"https:\/\/aobosteel.com\/h13-tool-steel\/\">H13 tool steel<\/a>, <a href=\"https:\/\/aobosteel.com\/esr-tool-steel\/\">ESR tool steel<\/a> and <a href=\"https:\/\/aobosteel.com\/d2-tool-steel-round-bar\/\">D2 round bar<\/a>. Selection: <a href=\"https:\/\/aobosteel.com\/best-tool-steels-for-aluminum-extrusion-dies\/\">tool steels for aluminium extrusion dies<\/a> \u00b7 order planning: <a href=\"https:\/\/aobosteel.com\/steel-weight-calculator-for-round-bar-and-plate\/\">steel weight calculator<\/a>.<\/p>\n  <\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer pgp-gap\"><\/div>\n\n\n\n<style id=\"aobo-pgph\">\n\/* ===== Pre-machined \/ ground tool steel plate \u2014 one screen only (header + hero = viewport, no scroll) ===== *\/\n\/* every rule is scoped to .pgph; the theme footer is hidden on this page only (page-id set at publish) *\/\n.pgph *,.pgph *::before,.pgph *::after{box-sizing:border-box}\nhtml,body{margin:0;padding:0;background:#0b1118}\n.pgph{font-size:16px;line-height:1.7;color:#fff;font-family:'Lato',system-ui,-apple-system,\"Segoe UI\",Arial,sans-serif}\n\n\/* --- hero: full-bleed, fills everything below the theme header (148px 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span{font-weight:600;color:#fff}\n.pgph-also{margin:10px 0 0;font-size:12.6px;color:#d5e0ec!important;text-shadow:0 1px 6px rgba(0,0,0,.9)}\n.pgph-also a{color:#e6eefa!important;text-decoration:underline}\n\n.pgph-card{grid-column:2;background:#fff;color:#0f1620;border-radius:10px;padding:14px 15px 13px;box-shadow:0 10px 26px rgba(0,0,0,.35)}\n.pgph-cardttl{margin:0 0 3px;font-size:17px;font-weight:700;line-height:1.3;color:#0f1620}\n.pgph-cardsub{margin:0 0 10px;font-size:12.4px;color:#5a6b7d;line-height:1.4}\n.pgph-card form p{margin:0 0 6px}\n.pgph-card input[type=text],.pgph-card input[type=email],.pgph-card input[type=tel],.pgph-card textarea{width:100%;font:inherit;\n  font-size:13.4px;color:#0f1620;background:#f6f8fb;border:1px solid #cfd9e6;border-radius:6px;padding:8px 10px;margin:0}\n.pgph-card textarea{resize:vertical;min-height:54px}\n.pgph-card input[type=submit]{width:100%;background:#074fd0;color:#fff;border:0;border-radius:6px;padding:11px 14px;\n  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*\/\n.pgph2{position:relative;width:100vw!important;max-width:100vw!important;margin-left:calc(50% - 50vw)!important;background:#fff;color:#14263a;padding:46px 0 44px;border-top:1px solid #e6ebf1;font-size:16px;line-height:1.7}\n.pgph2-in{max-width:1240px;margin:0 auto;padding:0 26px}\n.pgph2-kicker{margin:0 0 8px;font-size:11.6px;letter-spacing:.15em;text-transform:uppercase;color:#5b7fa6;font-weight:700}\n.pgph2-h2{margin:0 0 10px!important;padding:0!important;font-size:29px!important;line-height:1.25!important;color:#0f1b2a!important;font-weight:700!important}\n.pgph2-lede{margin:0 0 22px;max-width:80ch;color:#46596d;font-size:15.4px;line-height:1.6}\n.pgph2-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:0 0 24px}\n.pgph2-card{border:1px solid #e3e9f0;border-radius:10px;padding:16px 16px 14px;background:#fbfcfe}\n.pgph2-card h3{margin:0 0 4px!important;padding:0!important;font-size:16.6px!important;line-height:1.3!important;color:#0f1b2a!important}\n.pgph2-tag{margin:0 0 10px;font-size:12.4px;color:#6c8299;line-height:1.4}\n.pgph2-card ul{margin:0;padding-left:18px;font-size:13.6px;color:#33465a;line-height:1.55}\n.pgph2-card li{margin:0 0 3px}\n.pgph2-t{width:100%;border-collapse:collapse;font-size:13.8px;margin:0}\n.pgph2-t th{text-align:left;background:#f3f6fa;color:#33465a;font-weight:700;padding:9px 12px;border:1px solid #e3e9f0;font-size:13px}\n.pgph2-t td{padding:9px 12px;border:1px solid #e3e9f0;color:#2c3f52;vertical-align:top}\n.pgph2-foot{margin:18px 0 0;font-size:13.2px;color:#46596d;line-height:1.6}\n.pgph2-foot a{color:#0b53c4;font-weight:600;text-decoration:none}\n.pgph2-foot a:hover{text-decoration:underline}\n@media (max-width:900px){\n  .pgph2{padding:26px 0 24px}\n  .pgph2-in{padding:0 16px}\n  .pgph2-h2{font-size:21px!important}\n  .pgph2-lede{font-size:13.8px;margin-bottom:16px}\n  .pgph2-cards{grid-template-columns:1fr;gap:10px;margin-bottom:16px}\n  .pgph2-card{padding:12px 13px 11px}\n  .pgph2-card h3{font-size:15.4px!important}\n  .pgph2-card ul{font-size:13px}\n  .pgph2-t{font-size:12.4px}\n  .pgph2-t th,.pgph2-t td{padding:7px 9px}\n  .pgph2-t .col3{display:none}\n  .pgph2-foot{font-size:12.4px}\n}\n\n\/* homepage copy of the plate screen: no one-screen height budget here, so keep the\n   eyebrow, the lede and every spec row visible on phones *\/\n@media (max-width:900px){\n .pgph-eyebrow{display:block!important}\n .pgph-lede{display:block!important;font-size:13.2px;line-height:1.5}\n .pgph-spec .row-cond,.pgph-spec .row-pack,.pgph-spec .row-docs{display:grid!important}\n}\n@media (max-width:420px){\n .pgph-h1{font-size:21px!important}\n .pgph-cardttl{font-size:15px}\n}\n<\/style>\n\n<div class=\"pgph\"><section class=\"pgph-hero\">\n  <img class=\"pgph-bg\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-pgp-banner6.jpg\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-pgp-banner6-768x401.jpg 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-pgp-banner6-1536x802.jpg 1536w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-pgp-banner6-2048x1069.jpg 2048w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/up-pgp-banner6.jpg 2400w\" sizes=\"auto, 100vw\" width=\"2400\" height=\"1253\" loading=\"lazy\" decoding=\"async\" alt=\"Pre-machined tool steel blocks and plates \u2014 milled square, stacked on the bench and packed on pallets\">\n  <span class=\"pgph-scrim\"><\/span>\n  <div class=\"pgph-in\">\n    <div class=\"pgph-copy\">\n      <p class=\"pgph-eyebrow\">Aobo Steel \u00b7 Tool Steel Plate, Machined to Size \u00b7 Huangshi, China<\/p>\n      <h2 class=\"pgph-h1\">Precision Ground Tool Steel Plate<\/h2>\n      <p class=\"pgph-sub\">Ground flat stock \u00b7 Blanchard ground plate \u00b7 milled on 4 or 6 sides<\/p>\n      <p class=\"pgph-lede\">Plate cut to your finished thickness, then milled square or ground flat \u2014 no roughing allowance left to remove. D2\/1.2379, DC53, O1, H13 and 420\/440C, annealed for machining, heat number on every block.<\/p>\n      <div class=\"pgph-spec\">\n        <div><b>Grade<\/b><span>D2 \/ 1.2379 \u00b7 DC53 \u00b7 O1 \/ 1.2510 \u00b7 H13 \/ 1.2344 \u00b7 420 \/ 440C<\/span><\/div>\n        <div class=\"hl\"><b>Finish<\/b><span>Milled 4 or 6 sides, or Blanchard ground \u2014 Ra 3.2 \u00b5m milled, Ra 0.8 \u00b5m ground<\/span><\/div>\n        <div class=\"hl\"><b>Sizes<\/b><span>Thickness from 20 mm \u00b7 width to 610 mm \u00b7 length cut to your list<\/span><\/div>\n        <div><b>Tolerance<\/b><span>Milled +0.2\/+0.4 mm \u00b7 ground \u00b10.05 mm \u00b7 flatness 0.05 mm \/ 100 mm<\/span><\/div>\n        <div class=\"row-cond\"><b>Condition<\/b><span>Spheroidized annealed for machining \u00b7 pre-hardened on request<\/span><\/div>\n        <div class=\"row-pack\"><b>Packing<\/b><span>Anti-rust oil + VCI film, fumigated pallet, banded for sea freight<\/span><\/div>\n        <div class=\"row-docs\"><b>Documents<\/b><span>MTC EN 10204 3.1 per heat \u00b7 UT SEP 1921-82 on request<\/span><\/div>\n      <\/div>\n      <p class=\"pgph-also\">One piece minimum on machined plate, 5 t on mill orders. Raw plate: <a href=\"https:\/\/aobosteel.com\/d2-tool-steel-plate\/\">D2 plate<\/a> \u00b7 bar: <a href=\"https:\/\/aobosteel.com\/d2-tool-steel-round-bar\/\">D2 round bar<\/a> \u00b7 grades: <a href=\"https:\/\/aobosteel.com\/dc53-tool-steel\/\">DC53<\/a> \u00b7 <a href=\"https:\/\/aobosteel.com\/h13-tool-steel\/\">H13<\/a> \u00b7 <a href=\"https:\/\/aobosteel.com\/tool-steel-machining-allowance-chart\/\">machining allowance chart<\/a>.<\/p>\n    <\/div>\n    <div class=\"pgph-card\" id=\"pgp-form\">\n      <p class=\"pgph-cardttl\">Get a machined plate quote<\/p>\n      <p class=\"pgph-cardsub\">Send grade, size and finish. Price and lead time back within one working day.<\/p>\n      \n      \n<div class=\"wpcf7 no-js\" id=\"wpcf7-f16042-o3\" 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=\"\/pt\/wp-json\/wp\/v2\/pages\/24229#wpcf7-f16042-o3\" 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-o3\" \/><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_3\" name=\"_wpcf7_ak_js\" value=\"140\"\/><script>\ndocument.getElementById( \"ak_js_3\" ).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=\"pgph-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<\/section><\/div>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer pgp-gap\"><\/div>\n\n\n\n<div class=\"wp-block-cover alignfull is-light\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1429\" class=\"wp-block-cover__image-background wp-image-23401 size-full\" alt=\"\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/aobo-container-ship-sea.jpg\" data-object-fit=\"cover\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/aobo-container-ship-sea.jpg 2560w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/aobo-container-ship-sea-300x167.jpg 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/aobo-container-ship-sea-1024x572.jpg 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/aobo-container-ship-sea-768x429.jpg 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/aobo-container-ship-sea-1536x857.jpg 1536w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/aobo-container-ship-sea-2048x1143.jpg 2048w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/10\/aobo-container-ship-sea-18x10.jpg 18w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\" \/><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#9ba6b3\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<style id=\"aobo-screens-css-aobop3\">\/* \u4e24\u5c4f\u56fe\u7247\u5c01\u9762\u4e0a\u7684\u6587\u5b57\u677f\uff1b\u53ea\u4f5c\u7528\u4e8e\u542b .aobop2 \/ .aobop3 \u7684 cover *\/\n.wp-block-cover:has(.aobop2),.wp-block-cover:has(.aobop3){padding:0!important;min-height:540px!important}\n.wp-block-cover:has(.aobop2) .wp-block-cover__background,\n.wp-block-cover:has(.aobop3) .wp-block-cover__background{opacity:0!important}\n.wp-block-cover:has(.aobop2) .wp-block-cover__inner-container,\n.wp-block-cover:has(.aobop3) .wp-block-cover__inner-container{max-width:1240px!important;margin:0 auto!important;padding:0 26px!important;width:100%!important}\n.aobop-txt{max-width:620px;text-align:left;background:rgba(8,13,20,.25);border-radius:4px;\n  padding:24px 28px 26px;box-shadow:0 18px 50px rgba(0,0,0,.35)}\n.wp-block-cover:has(.aobop2) .aobop-txt{margin:0 0 0 auto!important}\n.wp-block-cover:has(.aobop3) .aobop-txt{margin:0 auto 0 0!important}\n.aobop-txt .aobop-h{margin:0 0 9px!important;padding:0!important;font-size:clamp(24px,2.5vw,32px)!important;line-height:1.18!important;\n  font-weight:700!important;color:#fff!important;letter-spacing:-.01em;text-shadow:0 1px 10px rgba(0,0,0,.55)}\n.aobop-txt .aobop-p{margin:0!important;font-size:15px;line-height:1.55;color:#e6eefa!important;text-shadow:0 1px 8px rgba(0,0,0,.5)}\n@media (max-width:900px){\n  .wp-block-cover:has(.aobop2) .wp-block-cover__inner-container,\n  .wp-block-cover:has(.aobop3) .wp-block-cover__inner-container{padding:0 16px!important}\n  .aobop-txt{max-width:none;width:100%!important;padding:18px 20px 20px;margin:26px auto!important}\n  .aobop-txt .aobop-h{font-size:23px!important}\n  .aobop-txt .aobop-p{font-size:13.6px}\n}\n\/* \u7ad9\u5185\u5c0f\u8282\u5206\u9694\u7ebf\uff1a\u9996\u9875\u7528\u7684\u662f 8px \u95f4\u8ddd\uff0c\u8fd9\u91cc\u628a\u5206\u9694\u7ebf\u5403\u6389 *\/\n.entry-content > hr.wp-block-separator{display:none!important}<\/style>\n<div class=\"aobop3\">\n  <div class=\"aobop-txt\">\n    <h2 class=\"aobop-h\">Full-Container Shipments Worldwide<\/h2>\n    <p class=\"aobop-p\">One supplier. One container. One coordinated export shipment.<\/p>\n  <\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<style id=\"aobo-pgp-gap\">\n.wp-block-spacer.pgp-gap{background:#ffffff!important}\n<\/style>\n","protected":false},"excerpt":{"rendered":"<p>Aobo Steel \u00b7 Tool Steel Plate, Machined to Size \u00b7 Huangshi, China Precision Ground Tool Steel Plate Ground flat stock \u00b7 Blanchard ground plate \u00b7 milled on 4 or 6 sides Plate cut to your finished thickness, then milled square or ground flat \u2014 no roughing allowance left to remove. D2\/1.2379, DC53, O1, H13 and [&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":"","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-24229","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>Tool Steel Supplier in China | Forged &amp; Annealed Steel Bars | Aobo Steel<\/title>\n<meta name=\"description\" content=\"China tool steel supplier with 20+ years of forging heritage in Huangshi. Annealed D2, H13, 1.2379 and 1.2080 bars, MTC with every heat. Get a quote.\" \/>\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\/pt\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aobo Steel - Tool Steel Supplier in China\" \/>\n<meta property=\"og:description\" content=\"China tool steel supplier with 20+ years of forging heritage in Huangshi. Annealed D2, H13, 1.2379 and 1.2080 bars, MTC with every heat. 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Annealed D2, H13, 1.2379 and 1.2080 bars, MTC with every heat. 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