{"id":9406,"date":"2025-08-03T15:11:54","date_gmt":"2025-08-03T07:11:54","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9406"},"modified":"2026-01-28T23:53:41","modified_gmt":"2026-01-28T15:53:41","slug":"h10-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/h10-tool-steel\/","title":{"rendered":"H10 Tool Steel | 1.2365 | SKD7"},"content":{"rendered":"<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\/ko\/\"><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\/ko\/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; H10 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 H10 Tool Steel | 1.2365 | SKD7 Hot Work Chromium-Molybdenum 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\">\u2713Annealed State Delivery<\/h5><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-33ee52f8\"><h5 class=\"uagb-heading-text\">\u2713Surface: Black Scale, Turned, Mill Finish, or Polished<\/h5><\/div>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Quick Inquiry For H10 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\">H10 tool steel is a chromium-based hot-work tool steel. The equivalent grades are DIN (Germany) 1.2365, JIS (Japan) SKD7, and GB (China) <a href=\"https:\/\/aobosteel.com\/ko\/4cr3mo3siv-tool-steel\/\"><em>4Cr3Mo3SiV<\/em><\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-eael-table-of-content\">1. H10 Tool Steel Chemical Composition<sup data-fn=\"10b4208e-d036-446c-b0d1-6770a02c0b2e\" class=\"fn\"><a id=\"10b4208e-d036-446c-b0d1-6770a02c0b2e-link\" href=\"#10b4208e-d036-446c-b0d1-6770a02c0b2e\">1<\/a><\/sup><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>C<\/td><td>Mn<\/td><td>Si<\/td><td>P<\/td><td>S<\/td><td>Cr<\/td><td>Mo<\/td><td>Others<\/td><\/tr><tr><td>0.35-0.45%<\/td><td>0.20-0.70%<\/td><td>0.80-1.25%<\/td><td>0.03%<\/td><td>0.03%<\/td><td>3.00-3.75%<\/td><td>2.00-3.00%<\/td><td>V 0.25-0.75%; Ni+Cu 0.75%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"2-eael-table-of-content\">2. Mechanical and Physical Properties of H10 Tool Steel<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Alloying elements in H10 tool steel impart a unique set of mechanical and physical properties, making it suitable for challenging hot-work environments.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-eael-table-of-content\">2.1 Hardness Capabilities<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The hardness of H10 tool steel is a critical factor in its performance:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Annealed Hardness:<\/strong>&nbsp;In its annealed (softened) state, H10 typically exhibits a hardness range of 192-229 HB, facilitating easier machining.<\/li>\n\n\n\n<li><strong>Quenched Hardness:<\/strong>&nbsp;Following appropriate&nbsp;heat treatment, H10 can achieve a quenched hardness of approximately 56-59 HRC.<\/li>\n\n\n\n<li><strong>Hot Hardness:<\/strong>&nbsp;H10 demonstrates medium (rated C) hot hardness. Notably, in high-temperature working environments over long periods, MOD H10 tool steel maintains its hardness better than H11 tool steel.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-eael-table-of-content\">2.2 Hardenability and Heat Treatment Response<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H10 is a deep-hardening steel that can achieve uniform hardness across a wide range of cross-sections.&nbsp;Its hardening factor (D1) is approximately 5 inches.&nbsp;As an air-hardening grade, H10 allows for <a href=\"https:\/\/aobosteel.com\/ko\/knowledge-hub\/what-is-martensite\/\">martensite<\/a> formation upon air-cooling, which contributes to minimal distortion during the heat treatment process.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-eael-table-of-content\">2.3 Toughness and Impact Resistance<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H10 tool steel offers excellent toughness, generally rated as Good (or D category). Chromium hot-work steels like H10 offer good toughness and shock resistance, which are advantageous for many hot-work operations. While some comparative data might suggest slightly lower toughness than H11 or H13, H10 remains a robust choice for applications requiring impact strength.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"6-eael-table-of-content\">2.4&nbsp;Wear&nbsp;Resistance<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The wear resistance of H10 tool steel is typically rated as Fair (C\/D category), with some sources classifying it as medium-high, often outperforming&nbsp;<em><a href=\"https:\/\/aobosteel.com\/ko\/h11-tool-steel\/\">H11<\/a><\/em>&nbsp;and&nbsp;<em><a href=\"https:\/\/aobosteel.com\/ko\/h13-tool-steel\/\">H13 tool steel<\/a><\/em>&nbsp;in this aspect. Good abrasion resistance is a vital property for dies used in demanding processes, such as hot forging.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"7-eael-table-of-content\">2.5 Performance at Elevated Temperatures<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A standout feature of H10 tool steel is its ability to maintain structural integrity at high temperatures:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Hot Strength:<\/strong>&nbsp;It exhibits good resistance to softening, retaining high hardness even at temperatures up to 500-550\u00b0C. This \u201cred hardness\u201d is essential for tools operating at high speeds or in direct contact with hot metal.<\/li>\n\n\n\n<li><strong>Tempering&nbsp;Resistance:<\/strong>&nbsp;H10 possesses medium-high <a href=\"https:\/\/aobosteel.com\/ko\/knowledge-hub\/what-is-tempering\/\">tempering<\/a> resistance, potentially exceeding that of H11 or H13 under certain operational conditions.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"8-eael-table-of-content\">2.6 Thermal Properties<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H10 tool steel is well-suited for applications involving thermal cycling:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Thermal Fatigue and Heat Checking Resistance:<\/strong>&nbsp;H10 has good resistance to thermal fatigue and heat checking, which are common failure modes in hot-work tooling.<\/li>\n\n\n\n<li><strong>Thermal Conductivity:<\/strong>&nbsp;With a chromium content of around 3%, H10 has a higher thermal conductivity (approximately 32 W\/m\u00b7K) compared to steels like H11 or H13 (which have ~5% Cr and ~26 W\/m\u00b7K). This enhanced thermal conductivity is beneficial for applications requiring efficient heat dissipation from the tool\u2019s surface.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"9-eael-table-of-content\">2.7 Dimensional Stability<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Being an air-hardening steel, H10 offers the advantage of low distortion during heat treatment, ensuring that tools maintain their intended shape and tolerances.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"10-eael-table-of-content\">2.8 Machinability<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">When properly annealed, H10 tool steel has a machinability rating generally considered Good (C category), allowing for effective shaping and preparation of tools.<\/p>\n\n\n\n<div class=\"wp-block-columns 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-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H10-tool-steel-1024x1024.avif\" alt=\"H10 tool steel\" class=\"wp-image-9152\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H10-tool-steel-1024x1024.avif 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H10-tool-steel-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H10-tool-steel-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H10-tool-steel-768x768.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H10-tool-steel-12x12.avif 12w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H10-tool-steel.avif 1080w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">H10 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-368de0af30875f67fc49140f8c2df577 wp-block-paragraph\"><strong>Fill out the following form to contact us for the latest H10 tool steel quotation!<\/strong><\/p>\n\n\n\n<div class=\"wp-block-leadin-hubspot-form-block\">\n\t\t\t\t\t\t<script>\n\t\t\t\t\t\t\twindow.hsFormsOnReady = window.hsFormsOnReady || [];\n\t\t\t\t\t\t\twindow.hsFormsOnReady.push(()=>{\n\t\t\t\t\t\t\t\thbspt.forms.create({\n\t\t\t\t\t\t\t\t\tportalId: 242461771,\n\t\t\t\t\t\t\t\t\tformId: \"1f7a4dcb-eb56-45e5-bd4f-5921cbf714c1\",\n\t\t\t\t\t\t\t\t\ttarget: \"#hbspt-form-1781065735000-8322837186\",\n\t\t\t\t\t\t\t\t\tregion: \"na2\",\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t})});\n\t\t\t\t\t\t<\/script>\n\t\t\t\t\t\t<div class=\"hbspt-form\" id=\"hbspt-form-1781065735000-8322837186\"><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"11-eael-table-of-content\">3. H10 Tool Steel Heat Treatment<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H10 tool steel, a robust chromium-based hot-work tool steel from the H-series, is engineered for demanding applications such as hot forging, extrusion, and die casting. Its performance under extreme operational temperatures, typically 315\u00b0C to 650\u00b0C (600\u00b0F to 1200\u00b0F), relies heavily on precise heat treatment.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"12-eael-table-of-content\">3.1 The Critical Steps in H10 Heat Treatment<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Achieving peak performance from H10 tool steel involves several distinct and vital stages. Each step must be carefully controlled to develop the desired microstructure and mechanical properties.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"13-eael-table-of-content\">3.2 Annealing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/aobosteel.com\/ko\/knowledge-hub\/what-is-annealing\/\">Annealing<\/a> is typically the first step for H10 tool steel. It\u2019s crucial for softening the steel for easier machining and creating a uniform microstructure for subsequent heat treatments.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Purpose:<\/strong>&nbsp;To soften the steel for machinability and create microstructural uniformity.<\/li>\n\n\n\n<li><strong>Recommended Temperature:<\/strong>&nbsp;845\u00b0C to 900\u00b0C (1550\u00b0F to 1650\u00b0F).<\/li>\n\n\n\n<li><strong>Cooling Procedure:<\/strong>&nbsp;A slow cool at a rate of approximately 22\u00b0C per hour (40\u00b0F per hour) is advised.<\/li>\n\n\n\n<li><strong>Target Hardness:<\/strong>&nbsp;The aim is to achieve an annealed hardness between 192 and 229 HB.<\/li>\n\n\n\n<li><strong>Resulting Microstructure:<\/strong>&nbsp;A properly annealed H10 will exhibit spheroidized carbides dispersed within a ferrite matrix, ideal for effective&nbsp;<a href=\"https:\/\/aobosteel.com\/ko\/knowledge-hub\/what-is-austenite\/\">austenite<\/a>&nbsp;formation and grain refinement during hardening.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"14-eael-table-of-content\">3.3 Preheating<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Preheating is a vital stage before hardening. It significantly reduces thermal shock, minimizing distortion or cracking when the tool enters the high-temperature furnace.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Purpose:<\/strong>&nbsp;To reduce thermal shock, lessen distortion\/cracking risks, relieve machining stresses, and decrease time in the high-heat austenitizing furnace.<\/li>\n\n\n\n<li><strong>Typical Temperature:<\/strong>&nbsp;Around 815\u00b0C (1500\u00b0F) is common. Staged preheating can also be beneficial.<\/li>\n\n\n\n<li><strong>Duration:<\/strong>&nbsp;Ensure the entire cross-section of the tool is uniformly heated.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"15-eael-table-of-content\">3.4 Austenitizing (Hardening)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Austenitizing (or hardening) involves heating H10 tool steel to a precise high temperature. This transforms its microstructure to austenite and dissolves essential alloy carbides, crucial for hardness and secondary hardening characteristics during tempering.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Purpose:<\/strong>&nbsp;To transform the steel\u2019s structure to austenite and dissolve necessary alloying elements (like Chromium, Molybdenum, and Vanadium) into solid solution.<\/li>\n\n\n\n<li><strong>Recommended Temperature:<\/strong>&nbsp;Generally between 1010\u00b0C and 1040\u00b0C (1850\u00b0F and 1900\u00b0F).<\/li>\n\n\n\n<li><strong>Holding Time:<\/strong>&nbsp;Hold at temperature only long enough to heat completely through (typically 15-40 minutes after reaching temp). Avoid prolonged soaking for H10. Austenitizing temperature affects dissolved carbides, Ms temperature, and retained austenite.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"16-eael-table-of-content\">3.5&nbsp;Quenching<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">After austenitizing, rapid <a href=\"https:\/\/aobosteel.com\/ko\/knowledge-hub\/what-is-quenching\/\">quenching<\/a> cools the steel, transforming the austenite into martensite \u2013 the hard, desirable microstructure.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Purpose:<\/strong>&nbsp;To rapidly cool the steel, transforming austenite into a hard martensitic structure.<\/li>\n\n\n\n<li><strong>Recommended Quench Medium:<\/strong>&nbsp;Air quenching is preferred for H10 (an air-hardening grade), minimizing residual stresses and dimensional changes.<\/li>\n\n\n\n<li><strong>Alternatives for Large Sections:<\/strong>&nbsp;For very large sections, an air blast or oil quench may be necessary.<\/li>\n\n\n\n<li><strong>Critical Note:<\/strong>&nbsp;<strong>H10 tool steel should never be water quenched.<\/strong><\/li>\n\n\n\n<li><strong>Optional Method:<\/strong>&nbsp;A salt bath quench (around 540-595\u00b0C or 1000-1100\u00b0F), followed by air cooling, is also viable.<\/li>\n\n\n\n<li><strong>Resulting Microstructure:<\/strong>&nbsp;Primarily martensite with some retained austenite.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"17-eael-table-of-content\">3..6 Tempering<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tempering is the final, indispensable step after quenching. Hardened H10 is stressed and can be brittle; tempering relieves these stresses and significantly improves toughness.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Purpose:<\/strong>&nbsp;To relieve internal stresses, transform retained austenite, precipitate fine alloy carbides for secondary hardening (enhancing hot strength), and improve toughness.<\/li>\n\n\n\n<li>Timing: Temper as soon as possible after quenching (ideally before reaching room temperature) to prevent cracking.<\/li>\n\n\n\n<li><strong>Typical Temperature Range:<\/strong>&nbsp;550\u00b0C to 650\u00b0C (1020\u00b0F to 1200\u00b0F). H10 shows a secondary hardening peak around 540\u00b0C (1000\u00b0F).<\/li>\n\n\n\n<li>Multiple Tempers: A Minimum of two (often up to four) tempering cycles are essential for H10 to maximize retained austenite transformation and optimize toughness.<\/li>\n\n\n\n<li><strong>Soak Time:<\/strong>&nbsp;Each temper should involve a soak time of 2 to 4 hours.<\/li>\n\n\n\n<li><strong>Target Working Hardness:<\/strong>&nbsp;Typically 38 to 54 HRC, depending on the application.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"18-eael-table-of-content\">3.7 Summary of H10 Tool Steel Heat Treatment Parameters<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">For quick reference, the key parameters for H10 tool steel heat treatment are:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Process Step<\/strong><\/td><td><strong>Temperature Range<\/strong><\/td><td><strong>Key Considerations<\/strong><\/td><\/tr><tr><td><strong>Annealing<\/strong><\/td><td>845-900\u00b0C (1550-1650\u00b0F)<\/td><td>Slow cool approx. 22\u00b0C\/h (40\u00b0F\/h). Target: 192-229 HB.<\/td><\/tr><tr><td><strong>Preheating<\/strong><\/td><td>~815\u00b0C (1500\u00b0F)<\/td><td>Heat uniformly throughout.<\/td><\/tr><tr><td><strong>Austenitizing<\/strong><\/td><td>1010-1040\u00b0C (1850-1900\u00b0F)<\/td><td>Hold 15-40 mins after reaching temp. Avoid prolonged soaking.<\/td><\/tr><tr><td><strong>Quenching<\/strong><\/td><td>Air quench (recommended). Salt bath: 540-595\u00b0C.<\/td><td><strong>Never water quench.<\/strong>&nbsp;Oil or air blast for large sections.<\/td><\/tr><tr><td><strong>Tempering<\/strong><\/td><td>550-650\u00b0C (1020-1200\u00b0F)<\/td><td>Temper immediately after quenching. 2-4 cycles, 2-4 hours each. Target: 38-54 HRC.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"19-eael-table-of-content\">3.8 Enhancing H10 Tool Steel with Surface Treatments<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To further boost wear resistance, surface treatments like nitriding can be applied to H10 tool steel.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Nitriding:<\/strong>&nbsp;This process introduces nitrogen into the steel\u2019s surface, creating an extremely hard outer layer (often exceeding 1000 HV).<\/li>\n\n\n\n<li><strong>Benefits:<\/strong>&nbsp;Significantly improves wear resistance and anti-galling properties.<\/li>\n\n\n\n<li><strong>Core Properties:<\/strong>&nbsp;Nitriding is typically performed around 540\u00b0C, often below or within H10\u2019s tempering range. This hardens the surface without negatively affecting the core toughness and strength established by prior heat treatment.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"20-eael-table-of-content\">4. Applications<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H10 tool steel\u2019s balanced properties make it ideal for diverse hot die work applications, optimizing tooling choices for high-temperature metal forming operations.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"21-eael-table-of-content\">4.1 Hot Forging: Crafting Durable Dies and Tools with H10<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">In hot forging, H10 tool steel demonstrates its value, particularly for press forging dies experiencing prolonged contact with heated workpieces.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Its capabilities include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dies for forging aluminum, magnesium, copper, brass, and steel.<\/li>\n\n\n\n<li>Punches and dies for aluminum forging (often heat-treated to 44-48 HRC), where H10 serves as a reliable alternative to H11 and H13.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">The toughness and hot hardness of H10 tool steel ensure longevity and consistent performance in these demanding forging environments.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"22-eael-table-of-content\">4.2 Hot Extrusion: Optimizing Tooling with H10\u2019s Resilience<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H10 tool steel is a frequently specified material for hot extrusion tooling across a range of metals.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Key H10 tool steel applications in this area include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Extrusion Dies:<\/strong>&nbsp;For aluminum, magnesium, copper, brass, and steel.<\/li>\n\n\n\n<li><strong>Mandrels:<\/strong>&nbsp;H10 is particularly suitable for hot extrusion mandrels, especially with copper alloys, due to its wear resistance and strength at temperature.<\/li>\n\n\n\n<li><strong>Ancillary Tooling:<\/strong>&nbsp;Dummy blocks, backers, and die rings for aluminum and magnesium extrusion processes also benefit from H10\u2019s properties.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"23-eael-table-of-content\">4.3 Die Casting: H10 for High-Temperature Copper Alloy Molds<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">While H11, H12, and H13 are common for aluminum and magnesium die casting, H10 tool steel is preferred for applications involving higher temperature alloys.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Copper Casting Dies:<\/strong>&nbsp;H10 is specifically recommended for copper casting dies. Its ability to effectively retain hardness at the elevated temperatures of copper alloy casting makes it the preferred choice.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"24-eael-table-of-content\">4.4 Enhanced Performance with Modified H10 (H10 mod)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Modified H10 (H10 mod) offers a distinct advantage in thermal conductivity (approx. 32 W\/m\u00b7K vs. 26 W\/m\u00b7K for H11\/H13). This superior heat dissipation is critical in several H10 tool steel applications:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Heavily Water-Cooled Tools:<\/strong>&nbsp;Effective in smaller tools (&lt;100mm thick) requiring rapid heat extraction.<\/li>\n\n\n\n<li><strong>High-Speed Presses:<\/strong>&nbsp;Used in equipment like Hatebur presses, where thermal management is key for short cycle times.<\/li>\n\n\n\n<li><strong>Press-Hardening Automotive Components:<\/strong>&nbsp;H10 mod is increasingly used for tools in press-hardening (hot stamping). The die\u2019s efficient heat extraction is crucial for achieving the desired martensitic transformation in the part.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"25-eael-table-of-content\">4.5 H10 Tool Steel Applications Summary<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The table below outlines common H10 tool steel applications and the key properties that make it suitable for each:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Application Category<\/strong><\/td><td><strong>Specific H10 Tool Steel Uses<\/strong><\/td><td><strong>Key H10 Properties Leveraged<\/strong><\/td><td><strong>Target Materials<\/strong><\/td><\/tr><tr><td>Hot Forging<\/td><td>Press forging dies, general forging tools, punches<\/td><td>Hot hardness, toughness, wear resistance<\/td><td>Al, Mg, Cu, Brass, Steel<\/td><\/tr><tr><td>Hot Extrusion<\/td><td>Extrusion dies, mandrels (esp. for copper alloys), dummy blocks, backers<\/td><td>Hot hardness, wear resistance at high temp, toughness<\/td><td>Al, Mg, Cu, Brass, Steel<\/td><\/tr><tr><td>Die Casting<\/td><td>Dies specifically for copper casting<\/td><td>Excellent high-temperature hardness retention<\/td><td>Copper alloys<\/td><\/tr><tr><td>Structural Components<\/td><td>Heavily water-cooled tools, high-speed press tools,and  press-hardening tools<\/td><td>High strength, toughness<\/td><td>Various<\/td><\/tr><tr><td>Modified H10 (H10 mod)<\/td><td>Heavily water-cooled tools, high-speed press tools, press-hardening tools<\/td><td>High thermal conductivity, hot hardness, good toughness<\/td><td>Various (heat extraction)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"26-eael-table-of-content\">5. H10 tool steel equivalent grades<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>DIN (Germany):<\/strong>&nbsp;1.2365 (also known as 32CrMoV12-28)<\/li>\n\n\n\n<li><strong>AFNOR (France):<\/strong>&nbsp;32 DCV 28 or 32CDV12-28<\/li>\n\n\n\n<li><strong>JIS (Japan):<\/strong>&nbsp;SKD7<\/li>\n\n\n\n<li><strong>BS (British Standard):<\/strong>&nbsp;BH10<\/li>\n\n\n\n<li><strong>UNS (Unified Numbering System):<\/strong>&nbsp;T20810<\/li>\n\n\n\n<li><strong>GB(China)<\/strong>:&nbsp;4Cr3Mo3SiV<\/li>\n<\/ul>\n\n\n<ol class=\"wp-block-footnotes\"><li id=\"10b4208e-d036-446c-b0d1-6770a02c0b2e\">Bringas, J. E. (Ed.). (2004). <em>Handbook of comparative world steel standards<\/em> (3rd ed.). ASTM International. <a href=\"#10b4208e-d036-446c-b0d1-6770a02c0b2e-link\" aria-label=\"1 \uac01\uc8fc \ucc38\uc870\ub85c \ub118\uc5b4\uac00\uc138\uc694\">\u21a9\ufe0e<\/a><\/li><\/ol>\n\n\n<div class=\"wp-block-group has-ast-global-color-8-background-color has-background is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading has-text-align-center\">Looking for Premium H10 Tool Steel?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">With over&nbsp;<strong>20 years of forging expertise<\/strong>, Aobo Steel delivers top-quality H10 tool steel tailored to your exact specifications. Our experienced team is ready to provide you with the best material solutions and technical support.<\/p>\n\n\n\n<p class=\"has-text-align-center has-ast-global-color-0-color has-text-color has-link-color wp-elements-fa2ff7dcc9773be472c122c82dda2075 wp-block-paragraph\"><strong>&nbsp;Contact us today! Please complete the form below to receive a personalized quote or expert consultation<\/strong><\/p>\n\n\n\n<div class=\"wp-block-leadin-hubspot-form-block\">\n\t\t\t\t\t\t<script>\n\t\t\t\t\t\t\twindow.hsFormsOnReady = window.hsFormsOnReady || [];\n\t\t\t\t\t\t\twindow.hsFormsOnReady.push(()=>{\n\t\t\t\t\t\t\t\thbspt.forms.create({\n\t\t\t\t\t\t\t\t\tportalId: 242461771,\n\t\t\t\t\t\t\t\t\tformId: \"1f7a4dcb-eb56-45e5-bd4f-5921cbf714c1\",\n\t\t\t\t\t\t\t\t\ttarget: \"#hbspt-form-1781065735000-9914493133\",\n\t\t\t\t\t\t\t\t\tregion: \"na2\",\n\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t})});\n\t\t\t\t\t\t<\/script>\n\t\t\t\t\t\t<div class=\"hbspt-form\" id=\"hbspt-form-1781065735000-9914493133\"><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n<script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\\\/\",\n    \"@type\": \"Product\",\n    \"name\": \"Forged H10 \\\/ 1.2365 \\\/ SKD7 Hot Work Tool Steel Round Bar\",\n    \"image\": \"https:\\\/\\\/aobosteel.com\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/H10-tool-steel.avif\",\n    \"description\": \"Premium Forged H10 (1.2365 \\\/ SKD7) Hot Work Tool Steel directly from Aobo Steel factory. Excellent thermal shock resistance and high temperature strength. Ideal for heavy duty die casting and forging dies. 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-H10-Round\",\n    \"mpn\": \"AOBO-H10-MFG\",\n    \"offers\": {\n        \"@type\": \"AggregateOffer\",\n        \"url\": \"https:\\\/\\\/aobosteel.com\\\/h10-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}<\/script>","protected":false},"excerpt":{"rendered":"<p>H10 tool steel is a chromium-based hot-work tool steel. The equivalent grades are DIN (Germany) 1.2365, JIS (Japan) SKD7, and GB (China) 4Cr3Mo3SiV. 1. H10 Tool Steel Chemical Composition1 C Mn Si P S Cr Mo Others 0.35-0.45% 0.20-0.70% 0.80-1.25% 0.03% 0.03% 3.00-3.75% 2.00-3.00% V 0.25-0.75%; Ni+Cu 0.75% 2. Mechanical and Physical Properties of H10 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9152,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"landing-page","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":"[{\"content\":\"Bringas, J. E. (Ed.). (2004). <em>Handbook of comparative world steel standards<\/em> (3rd ed.). ASTM International.\",\"id\":\"10b4208e-d036-446c-b0d1-6770a02c0b2e\"}]"},"class_list":["post-9406","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>H10 Tool Steel | 1.2365 | SKD7 | AoboSteel<\/title>\n<meta name=\"description\" content=\"H10 is a chromium-base hot-work tool steel within the AISI H series. 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