{"id":1455,"date":"2026-04-02T16:39:06","date_gmt":"2026-04-02T08:39:06","guid":{"rendered":"https:\/\/www.jycomat.com\/?post_type=product&p=1455"},"modified":"2026-04-02T16:40:14","modified_gmt":"2026-04-02T08:40:14","slug":"1-2842-tool-steel","status":"publish","type":"product","link":"https:\/\/www.jycomat.com\/ms\/product\/1-2842-tool-steel\/","title":{"rendered":"1.2842 Tool Steel"},"content":{"rendered":"
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I. What is 1.2842 Tool Steel?<\/h3>

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1.2842 (per DIN standard), also known as O2 tool steel, is a high-carbon, low-alloy oil-hardening cold work tool steel.<\/p>

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High carbon content:\u00a0Ensures the steel achieves exceptionally high hardness and wear resistance following appropriate heat treatment.<\/p>

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Low-Alloy:\u00a0The addition of primary alloying elements such as manganese, chromium, and tungsten confers excellent hardenability, toughness, and dimensional stability, while offering a cost advantage over high-alloy steels.<\/p>

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Oil-Quenchable:\u00a0This denotes a relatively mild heat treatment process, with significantly reduced risks of distortion and cracking compared to water-quenchable steels. This is crucial for moulds featuring complex geometries and precise dimensions.<\/p>

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In summary, 1.2842 achieves an exceptional balance between wear resistance, toughness, and machinability, making it an extremely versatile general-purpose cold work tool steel.<\/p>

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Equivalent grades<\/td>GB<\/td>AISI<\/td>DIN<\/td>\u2013<\/td>\u2013<\/td><\/tr>
9Mn2V<\/td>O2<\/td>1.2842<\/td>\u2013<\/td>\u2013<\/td><\/tr>
Chemical Composition<\/td>C<\/td>Si<\/td>Mn<\/td>V<\/td>P<\/td>S<\/td>Cr<\/td>Mo<\/td>\u2013<\/td>\u2013<\/td><\/tr>
0.85-0.95<\/td>0.20-0.40<\/td>1.40-1.80<\/td>\u22640.30<\/td>\u22640.03<\/td>\u22640.03<\/td>\u22640.50<\/td>\u22640.30<\/td>\u2013<\/td>\u2013<\/td><\/tr>
Available size<\/td>Round Bar<\/td>Diameter<\/td>Length<\/td><\/tr>
16-600mm<\/td>2000-6000mm<\/td><\/tr>
Flat Bar<\/td>Thickness<\/td>Width<\/td>Length<\/td><\/tr>
16-400mm<\/td>200-800mm<\/td>2000-6000mm<\/td><\/tr>
Surface condition<\/td>Black surface\/ Grinded\/ Machined<\/td><\/tr>
Annealed hardness<\/td>HB 229 MAX<\/td><\/tr>
Characteristics<\/td>Exceptional Wear Resistance, Outstanding Toughness, Superior dimensional stability, Superior machinability and polishability, Broad heat treatment window<\/td><\/tr>
Applications<\/td>Stamping dies, Cutting tools, Measuring tools and fixtures, Plastic moulds<\/td><\/tr><\/tbody><\/table><\/div>

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II. Core Advantages<\/h3>

  1. Exceptional Wear Resistance:\u00a0Its high carbon content provides a robust foundation for hardness (achieving HRC 60-62 after heat treatment). This enables 1.2842 moulds to withstand prolonged wear from metal stamping and drawing operations, significantly extending mould life and reducing maintenance and replacement frequency.<\/p><\/li>

  2. Outstanding Toughness:\u00a0While wear resistance is crucial, excessive brittleness can cause chipping or cracking under impact loads. Through a well-balanced alloy composition, 1.2842 exhibits excellent toughness, enabling it to withstand moderate impacts and intermittent stresses. This makes it suitable for dynamic applications such as blanking and die forging.<\/p><\/li>

  3. Superior dimensional stability:\u00a0As an oil-hardening steel, it exhibits minimal deformation during heat treatment. This represents a decisive advantage for precision moulds. It ensures the mould maintains precise cavity dimensions after multiple heat treatments and production cycles, thereby guaranteeing dimensional tolerances in the final product.<\/p><\/li>

  4. Superior machinability and polishability:\u00a0In the annealed condition, 1.2842 exhibits excellent machining properties. Whether milling, turning, or drilling, operations proceed relatively smoothly, effectively reducing tool wear and processing time. Concurrently, its uniform composition allows polishing to exceptionally high surface finishes, meeting stringent aesthetic requirements for applications such as automotive exterior components and appliance panels.<\/p><\/li>

  5. Broad heat treatment window:\u00a0Compared to certain high-end steels highly sensitive to heat treatment processes, 1.2842\u2019s heat treatment (such as quenching and tempering) is more manageable. This affords heat treatment specialists greater operational flexibility, facilitating consistent and stable final performance.<\/p><\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

    1.2842 (per DIN standard), also known as O2 tool steel, is a high-carbon, low-alloy oil-hardening cold work tool steel.<\/p>","protected":false},"featured_media":1456,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","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":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","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":"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":"","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-4)","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-4)","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-4)","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":""}}},"product_brand":[],"product_cat":[22],"product_tag":[64],"class_list":{"0":"post-1455","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-mold-steel","7":"product_tag-mold-steel","8":"desktop-align-left","9":"tablet-align-left","10":"mobile-align-left","12":"first","13":"instock","14":"shipping-taxable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/product\/1455","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/comments?post=1455"}],"version-history":[{"count":4,"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/product\/1455\/revisions"}],"predecessor-version":[{"id":1460,"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/product\/1455\/revisions\/1460"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/media\/1456"}],"wp:attachment":[{"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/media?parent=1455"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/product_brand?post=1455"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/product_cat?post=1455"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.jycomat.com\/ms\/wp-json\/wp\/v2\/product_tag?post=1455"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}