{"id":9395,"date":"2025-08-03T00:45:36","date_gmt":"2025-08-02T16:45:36","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9395"},"modified":"2026-04-25T20:33:50","modified_gmt":"2026-04-25T12:33:50","slug":"h11-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/h11-tool-steel\/","title":{"rendered":"H11 Tool Steel Supplier | 1.2343 \/ SKD6 Hot Work Steel Manufacturer | Aobo Steel"},"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; H11 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 H11 Tool Steel | 1.2343 | SKD6 Chromium Hot Work 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 H11 Material<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-91d6fb79 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<p class=\"wp-block-paragraph\">H11 tool steel is an air-hardening hot work steel known for its excellent toughness, thermal strength, and resistance to thermal fatigue. It offers good wear resistance at medium temperatures, low heat-treatment distortion, and strong resistance to corrosion by molten aluminum. H11 is widely used in die casting, forging, extrusion, and plastic mold applications. It is designated as H11 (ASTM A681), with equivalent grades including 1.2343 (DIN) and SKD6 (JIS).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-h11-tool-steel-supply-overview\">H11 Tool Steel Supply Overview<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Grade<\/td><td>AISI H11 \/ DIN 1.2343 \/ JIS SKD6<\/td><\/tr><tr><td>Delivery Condition<\/td><td>Fully Annealed (Soft Condition for Machining)<\/td><\/tr><tr><td>Available Forms<\/td><td>Round Bar \/ Flat Bar \/ Plate \/ Forged Block<\/td><\/tr><tr><td>Monthly Production Capacity<\/td><td>Approx. 1000 metric tons<\/td><\/tr><tr><td>Recommended Export Quantity<\/td><td>Full 20GP container (~26 tons)<\/td><\/tr><tr><td>MOQ<\/td><td>5 tons<\/td><\/tr><tr><td>Lead Time (With Ingot Stock)<\/td><td>Approx. 20 days<\/td><\/tr><tr><td>Lead Time (Fresh Melt)<\/td><td>30\u201345 days<\/td><\/tr><tr><td>Lead Time (ESR Grade)<\/td><td>Approx. 60 days<\/td><\/tr><tr><td>Inspection<\/td><td>In-house UT team + Third-party inspection available<\/td><\/tr><tr><td>Documentation<\/td><td>MTC (EN 10204 3.1) + UT Report<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-global-distributors-source-h11-from-aobo-steel\">Why Global Distributors Source H11 from Aobo Steel<\/h2>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-91e84d54 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\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<ul class=\"wp-block-list\">\n<li>Continuous monthly supply of around 1000 tons<\/li>\n\n\n\n<li>MOQ from 5 tons for wholesale orders<\/li>\n\n\n\n<li>Container-optimized bar and plate lengths<\/li>\n\n\n\n<li>Mixed sizes are supported for export loading<\/li>\n\n\n\n<li>Annealed delivery for downstream machining<\/li>\n\n\n\n<li>Stable sourcing through integrated supply chain partners<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>UT inspection available to SEP 1921-82 D\/d or E\/e<\/li>\n\n\n\n<li>MTC and batch traceability with each shipment<\/li>\n\n\n\n<li>Heat number tracking for order control<\/li>\n\n\n\n<li>Black, turned, and polished surface options<\/li>\n\n\n\n<li>Bulk export packing for sea shipment<\/li>\n\n\n\n<li>Clear conversion path to the dedicated bulk supply page<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-5d8a0cc1 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\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-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading has-text-align-left has-large-font-size\" id=\"h-stable-production-for-long-term-bulk-supply\">Stable Production for Long-Term Bulk Supply<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Continuous monthly output of around 1000 tons<\/li>\n\n\n\n<li>Continuous production cycles for inventory replenishment<\/li>\n\n\n\n<li>ESR (Electro-Slag Remelting) is available upon request<\/li>\n\n\n\n<li>Stable alloy sourcing to reduce supply interruption risk<\/li>\n\n\n\n<li>Full batch traceability linked to the original heat number<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-3e41869c wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Request a Volume Quote<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-large has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-1024x576.avif\" alt=\"\" class=\"wp-image-12933\" style=\"border-top-left-radius:15px;border-top-right-radius:15px;border-bottom-left-radius:15px;border-bottom-right-radius:15px\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-1024x576.avif 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-300x169.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-768x432.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-1536x864.avif 1536w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016-18x10.avif 18w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20171115_153016.avif 1860w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-available-h11-tool-steel-forms\">Available H11 Tool Steel Forms<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"206\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd-1024x206.avif\" alt=\"\" class=\"wp-image-13355\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd-1024x206.avif 1024w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd-300x60.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd-768x155.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd-18x4.avif 18w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/03\/dd399cbb-cb1f-40f8-8398-03acefc1a0cd.avif 1385w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-905fd28c alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\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-full has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20221028_111745.avif\" alt=\"\" class=\"wp-image-13133\" style=\"border-top-left-radius:15px;border-top-right-radius:15px;border-bottom-left-radius:15px;border-bottom-right-radius:15px\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20221028_111745.avif 500w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20221028_111745-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20221028_111745-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/IMG_20221028_111745-12x12.avif 12w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading has-large-font-size\" id=\"h-quality-control-for-bulk-orders\">Quality Control for Bulk Orders<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Every batch of tool steel supplied by Aobo Steel is verified before shipment to ensure grade accuracy, internal soundness, and traceability for bulk orders.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Chemical composition verified by a spectrometer<\/li>\n\n\n\n<li>Ultrasonic testing available (SEP 1921-82)<\/li>\n\n\n\n<li>Delivered in spheroidized annealed condition<\/li>\n\n\n\n<li>Mill Test Certificate (EN 10204 3.1) with heat number<\/li>\n\n\n\n<li>Dimensional and surface inspection before shipment<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Get H11 Bulk Supply Quote<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-a9250134 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\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-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<h2 class=\"wp-block-heading has-large-font-size\" id=\"h-export-packaging-and-container-loading\">Export Packaging and Container Loading<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Professional seaworthy export packing<\/li>\n\n\n\n<li>20GP loading optimized up to ~26 tons<\/li>\n\n\n\n<li>Mixed grades and mixed sizes supported<\/li>\n\n\n\n<li>Anti-rust protection for long sea transit<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"h-\">For international shipments, full-container loading is strongly recommended to ensure cost efficiency and smoother customs processing.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Get a Full Container Load (FCL) Quote<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full has-custom-border\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"750\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/photobank-2.avif\" alt=\"\" class=\"wp-image-12935\" style=\"border-top-left-radius:15px;border-top-right-radius:15px;border-bottom-left-radius:15px;border-bottom-right-radius:15px\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/photobank-2.avif 1000w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/photobank-2-300x225.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/photobank-2-768x576.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/02\/photobank-2-16x12.avif 16w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n<\/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<h2 class=\"wp-block-heading\" id=\"2-eael-table-of-content\">Chemical composition<\/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>Cr<\/td><td>Mo<\/td><td>V<\/td><\/tr><tr><td>0.33 \u2013 0.43%<\/td><td>0.20 \u2013 0.60%<\/td><td>0.80 \u2013 1.25%<\/td><td>4.75 \u2013 5.50%<\/td><td>1.10 \u2013 1.60%<\/td><td>0.30 \u2013 0.60%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">H11 tool steel equivalent grades and the compositions<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Grades<\/td><td>C<\/td><td>Si<\/td><td>Mn<\/td><td>P<\/td><td>S<\/td><td>Cr<\/td><td>Mo<\/td><td>V<\/td><\/tr><tr><td>DIN 1.2343<\/td><td>0.33 &#8211; 0.43%<\/td><td>0.80 &#8211; 1.25%<\/td><td>0.20 &#8211; 0.60%<\/td><td>\u2264&nbsp;0.030%<\/td><td>\u2264&nbsp;0.030%<\/td><td>4.75 &#8211; 5.50%<\/td><td>1.10 &#8211; 1.60%<\/td><td>0.30 &#8211; 0.60%<\/td><\/tr><tr><td>JIS SKD6<\/td><td>0.32 &#8211; 0.42%<\/td><td>0.80 &#8211; 1.20%<\/td><td>0.20 &#8211; 0.50%<\/td><td>\u2264&nbsp;0.030%<\/td><td>\u2264&nbsp;0.030%<\/td><td>4.50 &#8211; 5.50%<\/td><td>1.00 &#8211; 1.50%<\/td><td>0.30 &#8211; 0.60%<\/td><\/tr><tr><td>GB 4Cr5MoSiV <\/td><td>0.33 &#8211; 0.43%<\/td><td>0.80 &#8211; 1.20%<\/td><td>0.20 &#8211; 0.50%<\/td><td>\u2264&nbsp;0.030%<\/td><td>\u2264&nbsp;0.030%<\/td><td>4.75 &#8211; 5.50%<\/td><td>1.10 &#8211; 1.60%<\/td><td>0.30 &#8211; 0.60%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"3-eael-table-of-content\">Properties<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tool steel H11 possesses an exceptional combination of attainable hardness, red hardness (hot hardness), toughness, and wear resistance.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Strength: It can be heat-treated to yield strengths of 0.2% well above\u00a01380 MPa (200 ksi)\u00a0and ultimate tensile strengths exceeding\u00a02070 MPa (300 ksi).\u00a0<\/li>\n\n\n\n<li>Hardness: Normal working hardnesses typically range from 40 to 55 HRC. For applications such as aluminum die casting, a preferred hardness of 47 HRC is noted. In die casting, H11 dies can be hardened to 42\u201352 HRC; inserts and cores to 46\u201352 HRC; plungers to 46\u201350 HRC; slides to 46\u201352 HRC; shot sleeves to 44\u201348 HRC; and nozzles to 32\u201342 HRC. For hot forging punches and dies, hardness typically ranges from 44\u201348 HRC. Hot-rolling mill rolls (for short runs and low temperatures) are made of H11 at 40\u201348 HRC. Hot swaging dies are typically 48\u201352 HRC.<\/li>\n\n\n\n<li>Hot Hardness\/Red Hardness:\u00a0Good temper resistance, maintaining high hardness and strength at elevated temperatures. It resists softening during continuous exposure to temperatures up to 540 \u00b0C (1000 \u00b0F). While its hot hardness is lower than some other hot-work steels, such as H19 or H21, it still retains hardness better than other medium-alloy steels at higher temperatures. Hot Hardness\/Red Hardness is a very important property for hot-work tool steels.<\/li>\n\n\n\n<li>Toughness and Ductility:\u00a0Good ductility and impact strength. It has better resistance to brittle fracture than higher-alloy-content steels such as H14, H19, and H21. Electroslag remelting (ESR) or vacuum arc remelting (VAR) processes can significantly improve ductility and toughness.<\/li>\n\n\n\n<li>Fatigue Resistance: This material offers high fatigue resistance and thermal stability over a temperature range of 75 to 540\u00b0C (167 to 1000\u00b0F). Compared with 4340 steel that has undergone the same high-intensity heat treatment, H11 has better fatigue strength.<\/li>\n\n\n\n<li>Wear Resistance: Its wear resistance is lower than H13&#8217;s.<\/li>\n\n\n\n<li>Weldability:\u00a0It\u00a0is readily weldable, even in heavy sections.\u00a0<\/li>\n\n\n\n<li>Machinability:\u00a0Good machinability, rated around 70% of a standard 1% carbon steel.<\/li>\n\n\n\n<li>Thermal properties: It has a relatively low coefficient of thermal expansion and a thermal conductivity of 26 W\/m\u00b7K.<\/li>\n\n\n\n<li>Corrosion Resistance: Above-average resistance to oxidation and corrosion.<\/li>\n\n\n\n<li>Heat Checking Resistance: Good resistance to thermal fatigue (heat checking).<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"4-eael-table-of-content\">H11 Tool Steel Heat Treatment<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Precise\u00a0<em>heat treatment<\/em>\u00a0of H11 tool steel is crucial to achieving optimal performance as a 5% chromium hot-work die steel and an\u00a0ultrahigh-strength steel, similar to H11 Modified and H13. This process tunes the microstructure for demanding factory tooling.\u00a0<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-eael-table-of-content\">Forging<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">This steel is easily forged, with a suitable forging temperature range of\u00a01120 to 1150\u00b0C (2050 to 2100\u00b0F). We recommend\u00a0preheating the billet to 790-815\u00b0C (1450-1500\u00b0F), then uniformly heating it to the forging temperature. The forging temperature must\u00a0NOT\u00a0be lower than\u00a0925\u00b0C (1700\u00b0F). If the temperature drops near this level, it must be reheated before continuing the forging process.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"6-eael-table-of-content\">Austenitizing<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Austenitizing, the primary hardening step, involves heating to transform its structure into austenite. This allows uniform conversion and dissolution of alloying elements and carbides.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Preheating:\u00a0Preheat H11 to 760-815 \u00b0C (1400-1500 \u00b0F) before austenitizing to minimize thermal shock and cracking, especially for this high-alloy material.<\/li>\n\n\n\n<li>Austenitizing Temperatures and Soaking Times:\u00a0The Austenitizing Temperature is 995-1025 \u00b0C (1825-1875 \u00b0F). The soaking time is 20 minutes + 5 minutes per 25 mm (1 inch) of thickness.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Holding at the austenitizing temperature ensures uniform transformation and dissolution.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"7-eael-table-of-content\">Quenching<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">After austenitizing, H11 steel is rapidly quenched to form hard martensite. H11 is an air-hardening steel that provides uniform hardening throughout large sections with minimal residual stresses and dimensional changes. Air cooling is the standard and preferred method for H11 tool steel. While air cooling is standard, oil quenching from 995 \u00b0C (1825 \u00b0F) is a possible alternative. H11 and other hot-work tool steels must\u00a0never be water-quenched, as this can lead to cracking.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"8-eael-table-of-content\">Tempering<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">After hardening,\u00a0tempering\u00a0H11 tool steel by reheating to a lower temperature is crucial for improving toughness, relieving stress, and stabilizing properties. Steel H11 is a secondary hardening steel. It achieves its best performance when tempered at temperatures above 510\u00b0C (950\u00b0F). We recommend performing multiple tempering treatments on it to achieve optimal toughness and extend tool life. Allow the parts to cool to room temperature between tempering cycles to minimize residual austenite.\u00a0<\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><strong>Table of Hardness and Tempering Temperature for H11 Steel<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Tempering Temperature<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Rockwell C<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">As quenched<\/td><td class=\"has-text-align-center\" data-align=\"center\">56<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">700\u00b0F\/370\u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">54<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">800\u00b0F\/425\u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">55<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">900\u00b0F\/480\u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">57<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">1000\u00b0F\/540\u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">56<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">1100\u00b0F\/595\u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">46<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">1200\u00b0F\/650\u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">36<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">Experimental Conditions: 1. PREHEAT TEMPERATURE 1200\u00b0F\/650\u00b0C 2. HARDENING TEMPERATURE 1850\u00b0F\/1010\u00b0C 3. AIR QUENCH 4. CHEMISTRY Carbon 0.40% Manganese 0.30% Silicon 1.00% Chromium 5.00% Molybdenum 1.30% Vanadium 0.50%<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"9-eael-table-of-content\">Annealing\u00a0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The\u00a0annealing\u00a0temperature ranges from 845 to 900\u00b0C (1550-1650\u00b0F). The cooling rate is\u00a022-40\u00b0C\/h (40-75\u00b0F\/h). The hardness after annealing is\u00a0192-229 HB.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"10-eael-table-of-content\">Other Important H11 Heat Treatment Considerations<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Normalizing:\u00a0This process is generally\u00a0not recommended\u00a0for H11 or H13 tool steels due to the high risk of cracking, particularly when surface decarburization occurs.<\/li>\n\n\n\n<li>Stress-Relief:\u00a0After H11 has been processed, such as grinding, welding, or EDM (electrical discharge machining), we strongly recommend stress-relief treatment at 650\u00b0C. This treatment should be carried out at a temperature 14\u201328\u00b0C (25\u201350\u00b0F) lower than the previous tempering temperature. After stress relief, cool slowly at a maximum rate of 300\u00b0C\/h to prevent the formation of new stresses.<\/li>\n\n\n\n<li>Cryogenic Treatment:\u00a0Sub-zero treatment (e.g., -73\u00b0C \/ -100\u00b0F) can reduce retained austenite; however, H11\u2019s high tempering temperatures usually make it unnecessary to achieve maximum secondary hardening.<\/li>\n\n\n\n<li>Surface Protection:\u00a0Protecting its surfaces from oxidation and decarburization during high-temperature treatments, such as austenitizing and annealing, is vital. This is often achieved using controlled atmospheres, vacuum furnaces, or salt baths.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"1-eael-table-of-content\">Applications<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Die Casting Dies<\/li>\n\n\n\n<li>Forging Dies<\/li>\n\n\n\n<li>Extrusion Tools<\/li>\n\n\n\n<li>Hot Shear Blades:<\/li>\n\n\n\n<li>Aerospace Components<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" data-id=\"6292\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H11-TOOL-STEEL-FLAT.avif\" alt=\"H11 Tool Steel\" class=\"wp-image-6292\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H11-TOOL-STEEL-FLAT.avif 500w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H11-TOOL-STEEL-FLAT-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H11-TOOL-STEEL-FLAT-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/04\/H11-TOOL-STEEL-FLAT-12x12.avif 12w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><figcaption class=\"wp-element-caption\">H11 tool steel<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"887\" height=\"887\" data-id=\"10004\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/08\/1.2343-steel.avif\" alt=\"1.2343 steel\" class=\"wp-image-10004\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/08\/1.2343-steel.avif 887w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/08\/1.2343-steel-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/08\/1.2343-steel-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/08\/1.2343-steel-768x768.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/08\/1.2343-steel-12x12.avif 12w\" sizes=\"auto, (max-width: 887px) 100vw, 887px\" \/><figcaption class=\"wp-element-caption\">1.2343 tool steel<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" data-id=\"8787\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/06\/1.2343.webp\" alt=\"1.2343 tool steel\" class=\"wp-image-8787\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/06\/1.2343.webp 600w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/06\/1.2343-300x300.webp 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/06\/1.2343-150x150.webp 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/06\/1.2343-12x12.webp 12w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><figcaption class=\"wp-element-caption\">1.2343 tool steel<\/figcaption><\/figure>\n<\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-request-bulk-supply-of-h11-tool-steel-1-2343-skd6\">Request Bulk Supply of H11 Tool Steel (1.2343\/SKD6)<\/h2>\n\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<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 hs-cta-trigger-button hs-cta-trigger-button-230288465624\"><a class=\"wp-block-button__link wp-element-button\">Open RFQ Form<\/a><\/div>\n\n\n\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 is-style-outline is-style-outline--2\"><a class=\"wp-block-button__link has-ast-global-color-3-color has-text-color has-background has-link-color wp-element-button\" href=\"https:\/\/aobosteel.com\/ko\/distributors\/\" style=\"background-color:#ffffff00\">Go to Bulk Supply Page<\/a><\/div>\n<\/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 H11 \\\/ 1.2343 \\\/ SKD6 Hot Work Tool Steel Round Bar\",\n    \"image\": \"https:\\\/\\\/aobosteel.com\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/H11-TOOL-STEEL-FLAT.avif\",\n    \"description\": \"High-quality Forged H11 (1.2343 \\\/ SKD6) Hot Work Tool Steel directly from Aobo Steel factory. Exceptional toughness and resistance to thermal cracking. Suitable for heavy hammer 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-H11-Round\",\n    \"mpn\": \"AOBO-H11-MFG\",\n    \"offers\": {\n        \"@type\": \"AggregateOffer\",\n        \"url\": \"https:\\\/\\\/aobosteel.com\\\/h11-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>H11 tool steel is an air-hardening hot work steel known for its excellent toughness, thermal strength, and resistance to thermal fatigue. It offers good wear resistance at medium temperatures, low heat-treatment distortion, and strong resistance to corrosion by molten aluminum. H11 is widely used in die casting, forging, extrusion, and plastic mold applications. It is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":14815,"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":"[]"},"class_list":["post-9395","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>H11 Tool Steel Supplier | 1.2343 | SKD6 Hot Work Steel | Aobo Steel<\/title>\n<meta name=\"description\" content=\"H11 tool steel (1.2343 \/ SKD6) supplier for bulk orders. 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