{"id":1266,"date":"2026-09-15T12:17:09","date_gmt":"2026-09-15T12:17:09","guid":{"rendered":"https:\/\/bpsteel.in\/?page_id=1266"},"modified":"2026-09-18T09:39:17","modified_gmt":"2026-09-18T09:39:17","slug":"c-45","status":"publish","type":"page","link":"https:\/\/bpsteel.in\/index.php\/c-45\/","title":{"rendered":"C-45"},"content":{"rendered":"\t\t
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C-45<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Overview<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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C45 is a medium-carbon engineering steel<\/strong> widely used for general-purpose machine components requiring a useful combination of strength, hardness, machinability and toughness.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Chemical Compositions<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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C<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Si<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Mn<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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P\/S<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Fe<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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0.42 – 0.50<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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0.10 – 0.40<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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0.50 – 0.80<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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< 0.035<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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bal.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Heat Treatment<\/span><\/h3><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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  • Normalising<\/li>
  • Annealing<\/li>
  • Hardening approximately 820\u2013860\u00b0C<\/span><\/li>
  • Water or oil quenching depending on section\/application<\/li>
  • Tempering according to required hardness and toughness<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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    Mechanical Properties<\/span><\/h3><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Typical normalised\/Q&T properties depend on section:<\/p>

    • Tensile strength: approximately 570\u2013850 MPa<\/span><\/li>
    • Good machinability<\/li>
    • Moderate toughness<\/li>
    • Can be induction hardened<\/li>
    • Surface hardness can be substantially increased by induction\/flame hardening<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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      Equivalent Grades<\/span><\/h3><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      • DIN:<\/span> C45 \/ 1.0503<\/li>
      • AISI\/SAE:<\/span> 1045<\/li>
      • JIS:<\/span> S45C<\/li>
      • EN:<\/span> C45<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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        Applications<\/span><\/h3><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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        • Shafts<\/li>
        • Axles<\/li>
        • Pins<\/li>
        • Gears<\/li>
        • Rollers<\/li>
        • Machine components<\/li>
        • Bushes<\/li>
        • Studs<\/li>
        • General engineering parts<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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          Available Forms<\/span><\/h3><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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          • Round bars<\/li>
          • Flats<\/li>
          • Plates<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

            C-45 Overview C45 is a medium-carbon engineering steel widely used for general-purpose machine components requiring a useful combination of strength, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","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":"default","ast-page-background-enabled":"default","ast-page-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":"","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-1266","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/bpsteel.in\/index.php\/wp-json\/wp\/v2\/pages\/1266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bpsteel.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/bpsteel.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/bpsteel.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bpsteel.in\/index.php\/wp-json\/wp\/v2\/comments?post=1266"}],"version-history":[{"count":58,"href":"https:\/\/bpsteel.in\/index.php\/wp-json\/wp\/v2\/pages\/1266\/revisions"}],"predecessor-version":[{"id":1761,"href":"https:\/\/bpsteel.in\/index.php\/wp-json\/wp\/v2\/pages\/1266\/revisions\/1761"}],"wp:attachment":[{"href":"https:\/\/bpsteel.in\/index.php\/wp-json\/wp\/v2\/media?parent=1266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}