{"id":1443,"date":"2026-04-02T16:34:03","date_gmt":"2026-04-02T08:34:03","guid":{"rendered":"https:\/\/www.jycomat.com\/?post_type=product&p=1443"},"modified":"2026-04-02T16:35:39","modified_gmt":"2026-04-02T08:35:39","slug":"1-2738-mould-steel","status":"publish","type":"product","link":"https:\/\/www.jycomat.com\/tr\/urun\/1-2738-mould-steel\/","title":{"rendered":"1.2738 Mould Steel"},"content":{"rendered":"
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\u2160.What is 1.2738 mould steel? What makes it distinctive?<\/h3>

\u00a0<\/p>

1.2738 mould steel is no ordinary mould steel. It is a specially engineered, pre-hardened premium plastic mould steel. Its core value lies in:<\/p>

\u00a0<\/p>

\u2018Pre-hardened and ready to use\u2019 \u2013 saving time and effort: The material undergoes precise tempering (pre-hardening) before leaving the factory, achieving an ideal hardness range of approximately HRC 30-36. This eliminates the need for complex and time-consuming quenching and tempering processes upon receipt, significantly shortening the mould manufacturing cycle. It also reduces the risk of heat treatment deformation, keeping project timelines firmly under control.<\/p>

\u00a0<\/p>

Equivalent grades<\/td>GB<\/td>DIN<\/td>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0AISI<\/td>JIS<\/td>\u00a0DAIDO<\/td><\/tr>
3Cr2MnNiMo<\/td>1.2738<\/td>\u00a0P20+Ni<\/td>\u00a0\u2014<\/td>\u00a0\u2014<\/td><\/tr>
Chemical Composition<\/td>C<\/td>Si<\/td>Mn<\/td>Cr<\/td>P<\/td>S<\/td>\u00a0\u00a0Ni<\/td>\u00a0\u00a0Mo<\/td>W<\/td>Other<\/td><\/tr>
0.35-0.48<\/td>0.20-0.40<\/td>1.30-1.60<\/td>1.80-2.10<\/td>0.03MAX<\/td>0.03MAX<\/td>0.90-1.20<\/td>0.15-0.25<\/td>\u2013<\/td>\u2013<\/td><\/tr>
Available size<\/td>Round Bar<\/td>Diameter<\/td>Uzunluk<\/td><\/tr>
10-800mm<\/td>2000-6000mm<\/td><\/tr>
Flat Bar<\/td>Kal\u0131nl\u0131k<\/td>Geni\u015flik<\/td>Uzunluk<\/td><\/tr>
16-1000mm<\/td>200-2200mm<\/td>2000-6000mm<\/td><\/tr>
Surface condition<\/td>Black surface\/ Grinded\/ Machined<\/td><\/tr>
Annealed hardness<\/td>28-35 HCR (After tempering )<\/td><\/tr>
Characteristics<\/td>Good polishing and photo-etching properties

Good machinability<\/p>

High purity and good homogeneity\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/p>

Uniform hardness<\/p><\/td><\/tr>

Applications<\/td>Injection moulds for thermoplastics<\/td><\/tr>
Extrusion dies for thermoplastics<\/td><\/tr>
Blow moulds<\/td><\/tr>
Forming tools, press \u2013 brake dies (possibly flame hardened or nitrided )<\/td><\/tr>
Aluminium die casting prototype dies<\/td><\/tr>
Structural components, shafts .<\/td><\/tr>
Heat Treatment<\/td>Annealing<\/td>710 \u2013 730 \u00b0C<\/td><\/tr>
Hardness after annealing<\/td>Max. 240 HB<\/td><\/tr>
Stress relieving<\/td>Approx. 600 \u00b0C<\/td><\/tr>
Hot forming<\/td>1050 \u2013 850 \u00b0C<\/td><\/tr>
Hardening<\/td>870 \u2013 890 \u00b0C<\/td><\/tr>
Quenching media<\/td>Oil, Salt bath, Vacuum<\/td><\/tr>
Hardness after quenching<\/td>50 \u2013 54 HRC<\/td><\/tr>
Hardness after tempering<\/td>100 \u00b0C<\/td>200 \u00b0C<\/td>300 \u00b0C<\/td>400\u00b0C<\/td><\/tr>
52HRC<\/td>51HRC<\/td>49HRC<\/td>46HRC<\/td><\/tr><\/tbody><\/table><\/div>

\u00a0<\/p>

Pure lineage, stable and reliable: Premium 1.2738 employs advanced smelting techniques (e.g., EAF+LF+VD), ensuring high purity and uniform, dense microstructure. This inherently endows it with outstanding toughness, dimensional stability, and exceptional polishing performance, fundamentally guaranteeing long mould life and consistent product quality.<\/p>

\u00a0<\/p>

All-round performer, balanced performance: In its pre-hardened state, it perfectly balances high toughness, excellent machinability (cutting, milling, EDM), outstanding polishing capability (achieving mirror-like A1 grade), and superb etching performance. This makes it the ideal choice for manufacturing high-quality plastic products with stringent requirements.<\/p>\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":"

1.2738 mould steel is no ordinary mould steel. It is a specially engineered, pre-hardened premium plastic mould steel. Its core value lies in:<\/p>","protected":false},"featured_media":1444,"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-1443","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\/tr\/wp-json\/wp\/v2\/product\/1443","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jycomat.com\/tr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.jycomat.com\/tr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jycomat.com\/tr\/wp-json\/wp\/v2\/comments?post=1443"}],"version-history":[{"count":4,"href":"https:\/\/www.jycomat.com\/tr\/wp-json\/wp\/v2\/product\/1443\/revisions"}],"predecessor-version":[{"id":1448,"href":"https:\/\/www.jycomat.com\/tr\/wp-json\/wp\/v2\/product\/1443\/revisions\/1448"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jycomat.com\/tr\/wp-json\/wp\/v2\/media\/1444"}],"wp:attachment":[{"href":"https:\/\/www.jycomat.com\/tr\/wp-json\/wp\/v2\/media?parent=1443"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.jycomat.com\/tr\/wp-json\/wp\/v2\/product_brand?post=1443"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.jycomat.com\/tr\/wp-json\/wp\/v2\/product_cat?post=1443"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.jycomat.com\/tr\/wp-json\/wp\/v2\/product_tag?post=1443"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}