{"id":9390,"date":"2025-08-03T00:20:47","date_gmt":"2025-08-02T16:20:47","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9390"},"modified":"2026-06-26T09:35:19","modified_gmt":"2026-06-26T01:35:19","slug":"h21-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/h21-tool-steel\/","title":{"rendered":"H21 \uacf5\uad6c\uac15 | 1.2581 | SKD7 \uacf5\uae09\uc5c5\uccb4"},"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\">\uc9d1<\/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\">\uacf5\uad6c\uac15 \uce74\ud0c8\ub85c\uadf8<\/mark><u> <\/u><\/a>&gt; H21 \uacf5\uad6c\uac15<\/h6><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-d1ce38c5\"><h5 class=\"uagb-heading-text\"><em>\uc544\uc624\ubcf4 \uc2a4\ud2f8 | \uc911\uad6d\uc758 \uae00\ub85c\ubc8c \uacf5\uad6c\uac15 \uacf5\uae09\uc5c5\uccb4<\/em><\/h5><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-5b6189ba\"><h2 class=\"uagb-heading-text\">AISI H21 \uacf5\uad6c\uac15 | 1.2581 | SKD5 \uace0\ud145\uc2a4\ud150 \uc5f4\uac04 \uac00\uacf5\uac15<\/h2><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-914bcd03\"><h5 class=\"uagb-heading-text\">\u2713100% UT \ud14c\uc2a4\ud2b8 \ud488\uc9c8 \ubcf4\uc99d | 1921-82\ub144 9\uc6d4 D\/D \ub4f1\uae09 \ubcf4\uc99d<\/h5><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-84cd4af9\"><h5 class=\"uagb-heading-text\">\u2713\uace0\uc628 \uc555\ucd9c \uae08\ud615 \ubc0f \ud669\ub3d9 \uc8fc\uc870\uc5d0 \ucd5c\uc801\ud654 | \ud0c1\uc6d4\ud55c \ub0b4\uc5f4\uc131<\/h5><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-20e20150\"><h5 class=\"uagb-heading-text\">\u2713\uc5b4\ub2d0\ub9c1 \uc0c1\ud0dc \uc804\ub2ec<\/h5><\/div>\n\n\n\n<div class=\"wp-block-uagb-advanced-heading uagb-block-33ee52f8\"><h5 class=\"uagb-heading-text\">\u2713\ud45c\uba74: \ube14\ub799 \uc2a4\ucf00\uc77c, \uc120\uc0ad \uac00\uacf5, \ubc00 \ud53c\ub2c8\uc2dc \ub610\ub294 \uad11\ud0dd \ucc98\ub9ac<\/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 popmake-16052\"><a class=\"wp-block-button__link wp-element-button\">H21 \uc18c\uc7ac\uc5d0 \ub300\ud55c \ube60\ub978 \ubb38\uc758<\/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\">H21 \uacf5\uad6c\uac15\uc740 AISI H \uadf8\ub8f9\uc73c\ub85c \ubd84\ub958\ub418\ub294 \ud145\uc2a4\ud150\uacc4 \uace0\uc628 \uac00\uacf5 \uacf5\uad6c\uac15\uc785\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc885\ub958\uc758 \uac15\uc740 \uace0\uc628 \ud658\uacbd\uc5d0\uc11c\uc758 \uacf5\uad6c \uc81c\uc791\uc5d0 \uc801\ud569\ud558\ub3c4\ub85d \uac1c\ubc1c\ub41c \ucd08\uae30 \uace0\ud569\uae08\uac15 \uc911 \ud558\ub098\uc785\ub2c8\ub2e4. <\/p>\n\n\n\n<h2 id=\"1-eael-table-of-content\" class=\"wp-block-heading\">1. H21 \uacf5\uad6c\uac15\uc758 \ud654\ud559 \uc870\uc131<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H21\uac15\uc758 \uc131\ub2a5\uc740 \ud569\uae08 \uc6d0\uc18c\uc5d0 \uc758\ud574 \ud06c\uac8c \uc88c\uc6b0\ub429\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc778 \uc870\uc131\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\ud0c4\uc18c(C):<\/strong>&nbsp;0.26% \u2013 0.36% (\uacbd\ud654\uc131 \ubc0f \ub0b4\ub9c8\ubaa8\uc131 \uc81c\uacf5)<\/li>\n\n\n\n<li><strong>\ub9dd\uac04(Mn):<\/strong>&nbsp;0.15% \u2013 0.40% (\uacbd\ud654\uc131\uc744 \ud5a5\uc0c1\uc2dc\ud0a4\uace0, \ud0c8\uc0b0\uc81c\/\ud0c8\ud669\uc81c \uc5ed\ud560\uc744 \ud568)<\/li>\n\n\n\n<li><strong>\uc2e4\ub9ac\ucf58(Si):<\/strong>&nbsp;0.15% \u2013 0.50% (\uac15\ub3c4 \ubc0f \uacbd\ub3c4 \uc99d\uac00, \ud0c8\uc0b0\uc81c \uc5ed\ud560)<\/li>\n\n\n\n<li><strong>\ud06c\ub86c(Cr):<\/strong>&nbsp;3.00% \u2013 3.75% (\uace0\uc628 \uc0b0\ud654 \ubc0f \ubd80\uc2dd\uc5d0 \ub300\ud55c \uc800\ud56d\uc131 \ud5a5\uc0c1)<\/li>\n\n\n\n<li><strong>\ubc14\ub098\ub4d0(V):<\/strong>&nbsp;0.30% \u2013 0.60% (\ub2e8\ub2e8\ud55c \ud0c4\ud654\ubb3c\uc744 \ud615\uc131\ud558\uc5ec \ub0b4\ub9c8\ubaa8\uc131 \ubc0f \uace0\uc628 \uac15\ub3c4\ub97c \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4.)<\/li>\n\n\n\n<li><strong>\ud145\uc2a4\ud150(W):<\/strong>&nbsp;8.50% \u2013 10.00% (\uace0\uc628 \uacbd\ub3c4, \uace0\uc628 \uac15\ub3c4 \ubc0f \ub0b4\ub9c8\ubaa8\uc131\uc758 \ud575\uc2ec \uc694\uc18c)<\/li>\n<\/ul>\n\n\n\n<h2 id=\"2-eael-table-of-content\" class=\"wp-block-heading\">2. H21 \uacf5\uad6c\uac15\uc758 \ud2b9\uc131<\/h2>\n\n\n\n<h3 id=\"3-eael-table-of-content\" class=\"wp-block-heading\">2.1 \uacbd\ub3c4 \ubc0f \ub0b4\uc5f4\uc131<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H21\uac15\uc740 \uc6b0\uc218\ud55c \ub0b4\uc5f4\uc131\uacfc \uace0\uc628\uc5d0\uc11c\ub3c4 \uacbd\ub3c4\ub97c \uc720\uc9c0\ud558\ub294 \ub2a5\ub825\uc73c\ub85c \uc798 \uc54c\ub824\uc838 \uc788\uc73c\uba70, \uc774\ub294 \uace0\uc628 \uc791\uc5c5 \ubd84\uc57c\uc5d0\uc11c \ub9e4\uc6b0 \uc911\uc694\ud55c \uc694\uc18c\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uac15\ud654 \uacbd\ub3c4:<\/strong>&nbsp;\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \ucc98\ub9ac \ud6c4 <a href=\"https:\/\/aobosteel.com\/ko\/knowledge-hub\/what-is-tempering\/\">\ub2f4\uae08\uc9c8<\/a> (\uc608: 595\u00b0C\/1100\u00b0F\uc5d0\uc11c 2\uc2dc\uac04 \ub3d9\uc548 \uc5f4\ucc98\ub9ac) \uc57d 529 HB\uc758 \uacbd\ub3c4\ub97c \uc5bb\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5f4\ucc98\ub9ac \uc628\ub3c4\ub97c \ub192\uc774\uba74(\uc608: 650\u00b0C\/1200\u00b0F\ub85c) \uacbd\ub3c4\ub294 \uc57d 437 HB\ub85c \uac10\uc18c\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uace0\uc628 \uacbd\ub3c4:<\/strong>&nbsp;\uc791\ub3d9 \uc628\ub3c4\uc5d0\uc11c\ub294 \uacbd\ub3c4\uac00 \uac10\uc18c\ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uace0\uc628\uc5d0\uc11c\uc758 \uacbd\ub3c4\ub294 595\u00b0C(1100\u00b0F)\uc5d0\uc11c \uc57d 280 HB, 650\u00b0C(1200\u00b0F)\uc5d0\uc11c \uc57d 211 HB\uc77c \uc218 \uc788\uc2b5\ub2c8\ub2e4. (\ucd08\uae30 \uc0c1\uc628 \uacbd\ub3c4 444 HB\ub97c \uae30\uc900\uc73c\ub85c \ud55c \uc77c\ubc18\uc801\uc778 \ub370\uc774\ud130\uc785\ub2c8\ub2e4.).<\/li>\n<\/ul>\n\n\n\n<h3 id=\"4-eael-table-of-content\" class=\"wp-block-heading\">2.2 \uc778\uc131 \ubc0f \uc5f0\uc131<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">H21\uc740 \uace0\uc628 \uac15\ub3c4\ub294 \uc6b0\uc218\ud558\uc9c0\ub9cc, \ud06c\ub86c\uacc4 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc5d0 \ube44\ud574 \uc778\uc131\uacfc \ucda9\uaca9 \uc800\ud56d\uc131\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \ub0ae\uc2b5\ub2c8\ub2e4.&nbsp;<a href=\"https:\/\/aobosteel.com\/ko\/hot-work-tool-steels\/\">\uace0\uc628 \uc791\uc5c5\uc6a9 \uac15\ucca0<\/a>, \uc640 \uac19\uc740&nbsp;<a href=\"https:\/\/aobosteel.com\/ko\/h11-tool-steel\/\">H11<\/a>&nbsp;\ub610\ub294&nbsp;<a href=\"https:\/\/aobosteel.com\/ko\/h13-tool-steel\/\">H13<\/a>. \ucda9\uaca9 \ud2b9\uc131 \ub610\ud55c H19\ubcf4\ub2e4 \ub5a8\uc5b4\uc9c0\ub294 \uac83\uc73c\ub85c \uc5ec\uaca8\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc120\ud0dd\ub41c \ud15c\ud37c\ub9c1 \uc628\ub3c4\uc640 \uacbd\ud654 \ud6c4 \ub0c9\uac01 \uc18d\ub3c4(\uc608: \uc624\uc77c) <a href=\"https:\/\/aobosteel.com\/ko\/knowledge-hub\/what-is-quenching\/\">\ub2f4\uae08\uc9c8 <\/a>\ub0c9\uac01 \uc18d\ub3c4\uac00 \ub290\ub9b4\uc218\ub85d \ucda9\uaca9 \uc778\uc131(\uc544\uc774\uc870\ub4dc \ub610\ub294 \uc0e4\ub974\ud53c V-\ub178\uce58 \uc2dc\ud5d8)\uc5d0 \uc0c1\ub2f9\ud55c \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ube44\ud2c0\ub9bc \ud2b9\uc131\uc740 \ubaa9\ud45c \uacbd\ub3c4(\uc77c\ubc18\uc801\uc73c\ub85c 42~55 HRC \ubc94\uc704)\ub97c \uc5bb\uae30 \uc704\ud574 \uc0ac\uc6a9\ub418\ub294 \ud2b9\uc815 \uc5f4\ucc98\ub9ac \ub9e4\uac1c\ubcc0\uc218\uc5d0 \ub530\ub77c \ud06c\uac8c \ub2ec\ub77c\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\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-full\"><img loading=\"lazy\" decoding=\"async\" width=\"810\" height=\"810\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H21-TOOL-STEEL.avif\" alt=\"H21 \uacf5\uad6c\uac15\" class=\"wp-image-9156\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H21-TOOL-STEEL.avif 810w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H21-TOOL-STEEL-300x300.avif 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H21-TOOL-STEEL-150x150.avif 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H21-TOOL-STEEL-768x768.avif 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/H21-TOOL-STEEL-12x12.avif 12w\" sizes=\"auto, (max-width: 810px) 100vw, 810px\" \/><figcaption class=\"wp-element-caption\">H21 \uacf5\uad6c\uac15<\/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-e31ffddc1b0b39d41f21db8b0c3fd2ef wp-block-paragraph\"><strong>H21 \uacf5\uad6c\uac15\uc744 \ucc3e\uace0 \uacc4\uc2ed\ub2c8\uae4c? \uc544\ub798 \uc591\uc2dd\uc744 \uc791\uc131\ud558\uc5ec \uc9c0\uae08 \ubc14\ub85c \ubb38\uc758\ud574 \uc8fc\uc138\uc694.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" id=\"wpcf7-f16042-o1\" lang=\"en-US\" dir=\"ltr\" data-wpcf7-id=\"16042\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/ko\/wp-json\/wp\/v2\/pages\/9390#wpcf7-f16042-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\ubb38\uc758 \uc591\uc2dd\" novalidate=\"novalidate\" data-status=\"init\" data-trp-original-action=\"\/ko\/wp-json\/wp\/v2\/pages\/9390#wpcf7-f16042-o1\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"16042\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.6\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"en_US\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f16042-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/fieldset>\n<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" autocomplete=\"name\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"\uc774\ub984 *\" value=\"\" type=\"text\" name=\"your-name\" \/><\/span>\n<\/p>\n<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-email\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-email wpcf7-validates-as-required wpcf7-text wpcf7-validates-as-email\" autocomplete=\"email\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"\uc774\uba54\uc77c *\" value=\"\" type=\"email\" name=\"your-email\" \/><\/span>\n<\/p>\n<p><span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"4\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" placeholder=\"\uba54\uc2dc\uc9c0 *\" name=\"your-message\"><\/textarea><\/span>\n<\/p>\n<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"\ubb38\uc758 \ubcf4\ub0b4\uae30\" \/>\n<\/p><p style=\"display: none !important;\" class=\"akismet-fields-container\" data-prefix=\"_wpcf7_ak_\"><label>\u0394<textarea name=\"_wpcf7_ak_hp_textarea\" cols=\"45\" rows=\"8\" maxlength=\"100\"><\/textarea><\/label><input type=\"hidden\" id=\"ak_js_1\" name=\"_wpcf7_ak_js\" value=\"31\"\/><script>\ndocument.getElementById( \"ak_js_1\" ).setAttribute( \"value\", ( new Date() ).getTime() );\n<\/script>\n<\/p><input type='hidden' class='wpcf7-pum' value='{\"closepopup\":false,\"closedelay\":0,\"openpopup\":true,\"openpopup_id\":16052}' \/><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<input type=\"hidden\" name=\"trp-form-language\" value=\"ko\"\/><\/form>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 id=\"5-eael-table-of-content\" class=\"wp-block-heading\">3. \uc5f4\ucc98\ub9ac<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H21 \uacf5\uad6c\uac15\uc758 \ucd5c\uc801 \uc131\ub2a5\uc744 \uad6c\ud604\ud558\ub824\uba74 \uc815\ubc00\ud55c \uc5f4\ucc98\ub9ac \uacf5\uc815\uc774 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. \uc774 \uacf5\uc815\uc744 \ud1b5\ud574 \uace0\uc628 \uc791\uc5c5\uc5d0 \ud544\uc218\uc801\uc778 \uacbd\ub3c4, \ub0b4\ub9c8\ubaa8\uc131 \ubc0f \uc778\uc131\uc744 \ud655\ubcf4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 id=\"6-eael-table-of-content\" class=\"wp-block-heading\">3.1 \uc608\uc5f4<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc8fc\uc694 \uacbd\ud654 \uacf5\uc815 \uc804\uc5d0 H21 \uacf5\uad6c\uac15\uc740 \uc2e0\uc911\ud558\uac8c \uc608\uc5f4\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc628\ub3c4:<\/strong>&nbsp;760~815\u00b0C(1400~1500\u00b0F)\uae4c\uc9c0 \uade0\uc77c\ud558\uac8c \uac00\uc5f4\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li><strong>\ubaa9\uc801:<\/strong>&nbsp;\uc774 \uc911\uc694\ud55c \ub2e8\uacc4\ub294 \uc5f4 \ucda9\uaca9\uc744 \ucd5c\uc18c\ud654\ud558\uace0 \uade0\uc5f4\uc744 \ubc29\uc9c0\ud558\ub294\ub370, \ud2b9\ud788 \ubcf5\uc7a1\ud55c \ud615\uc0c1\uc774\ub098 \ub450\uaed8\uac00 \ub2e4\uc591\ud55c \ubd80\ud488\uc5d0 \ud6a8\uacfc\uc801\uc785\ub2c8\ub2e4. \ub290\ub9ac\uace0 \uade0\uc77c\ud55c \uac00\uc5f4\uc740 \uac15\ucca0 \uc804\uccb4\uc5d0 \uc628\ub3c4\uac00 \uace0\ub974\uac8c \ubd84\ud3ec\ub418\ub3c4\ub85d \ud558\uc5ec \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uacfc\uc815\uc758 \uace0\uc628\uc5d0 \ub300\ube44\ud560 \uc218 \uc788\ub3c4\ub85d \ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"7-eael-table-of-content\" class=\"wp-block-heading\">3.2 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654(\uacbd\ud654)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uc608\uc5f4 \ud6c4, \uac15\ucca0\uc744 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uae4c\uc9c0 \uc62c\ub9bd\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc628\ub3c4:<\/strong>&nbsp;1095~1205\u00b0C\ub85c \uac00\uc5f4\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li><strong>\ubaa9\uc801:<\/strong>\u00a0\uc774 \ub2e8\uacc4\uc5d0\uc11c \uac15\ucca0\uc758 \ubbf8\uc138\uad6c\uc870\ub294 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ub85c \ubcc0\ud658\ub429\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ud0c4\uc18c\uc640 \ud145\uc2a4\ud150(W), \ud06c\ub86c(Cr)\uacfc \uac19\uc740 \uc8fc\uc694 \ud569\uae08 \uc6d0\uc18c\uac00 \uad6c\uc870\uc5d0 \uc6a9\ud574\ub420 \uc218 \uc788\uc73c\uba70, \uc774\ub294 \ub0c9\uac01 \uc2dc \uacbd\ub3c4\ub97c \uc5bb\ub294 \ub370 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h4 id=\"8-eael-table-of-content\" class=\"wp-block-heading\">\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uc5d0\uc11c\uc758 \uc720\uc9c0<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\uac15\ucca0\uc744 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uc5d0\uc11c \uc720\uc9c0\ud558\ub294 \uac83(\uc18c\ud0b9)\uc740 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc9c0\uc18d:<\/strong>&nbsp;\uc77c\ubc18\uc801\uc73c\ub85c \ub2e8\uba74 \ub450\uaed8\uc5d0 \ub530\ub77c 2~5\uc2dc\uac04\uc774 \uc18c\uc694\ub429\ub2c8\ub2e4(\ub450\uaed8 1\uc778\uce58\ub2f9 1\uc2dc\uac04 \ub4f1 \ucda9\ubd84\ud55c \uc2dc\uac04\uc744 \ud655\ubcf4\ud558\uc2ed\uc2dc\uc624).<\/li>\n\n\n\n<li><strong>\ubaa9\uc801:<\/strong>&nbsp;H21\uc740 \ud145\uc2a4\ud150\uacfc \ud06c\ub86c \ud568\ub7c9\uc774 \ub192\uc544 \uc548\uc815\uc801\uc778 \ud0c4\ud654\ubb3c\uc744 \ud615\uc131\ud569\ub2c8\ub2e4. \ucda9\ubd84\ud55c \uc720\uc9c0 \uc2dc\uac04\uc744 \ud1b5\ud574 \uc774\ub7ec\ud55c \ud0c4\ud654\ubb3c\uc774 \uc644\uc804\ud788 \uc6a9\ud574\ub418\uc5b4 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \ub0b4\uc5d0 \uace0\ub974\uac8c \ubd84\ud3ec\ub418\ubbc0\ub85c \ub2f4\uae08\uc9c8\uc5d0 \uc801\ud569\ud55c \uade0\uc77c\ud55c \uad6c\uc870\ub97c \uc5bb\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"9-eael-table-of-content\" class=\"wp-block-heading\">3.3 \ub2f4\uae08\uc9c8(\ub0c9\uac01)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\uae09\uc18d \ub0c9\uac01\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ub97c \ub2e8\ub2e8\ud55c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\uac15\uc73c\ub85c \ubcc0\ud658\uc2dc\ud0b5\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\ud589\ub3d9 \uc591\uc2dd:<\/strong>&nbsp;H21\uac15\uc740 \uacf5\uae30 \ub610\ub294 \uae30\ub984 \uc18d\uc5d0\uc11c \ub2f4\uae08\uc9c8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\uace0\ub824 \uc0ac\ud56d:<\/strong>&nbsp;H21 \uac15\uc7ac\ub294 \uacbd\ud654\uc131\uc774 \ub9e4\uc6b0 \ub192\uc544 \ub290\ub9b0 \uacf5\ub7ad\uc5d0\ub3c4 \uc27d\uac8c \uacbd\ud654\ub429\ub2c8\ub2e4. \ud2b9\ud788 \ud06c\uac70\ub098 \ubcf5\uc7a1\ud55c \ubd80\ud488\uc758 \uacbd\uc6b0, \uacf5\ub7ad\uc740 \uae09\uaca9\ud55c \uc720\ub7ad\uc5d0 \ube44\ud574 \ubcc0\ud615 \ubc0f \uade0\uc5f4 \ubc1c\uc0dd \uc704\ud5d8\uc744 \ud06c\uac8c \uc904\uc5ec\uc8fc\uae30 \ub54c\ubb38\uc5d0 \uc120\ud638\ub429\ub2c8\ub2e4. \ucd5c\ub300 \uacbd\ub3c4\ub97c \uc5bb\ub294 \uac83\uc774 \uc8fc\ub41c \ubaa9\ud45c\ub77c\uba74 \uc720\ub7ad\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uacbd\uc6b0 \ud384\ub77c\uc774\ud2b8\ub098 \ubca0\uc774\ub098\uc774\ud2b8\uc640 \uac19\uc740 \uc5f0\uc9c8 \uc870\uc9c1\uc774 \ud615\uc131\ub418\ub294 \uac83\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 \ub0c9\uac01 \uc18d\ub3c4\uac00 \ucda9\ubd84\ud788 \ube68\ub77c\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 id=\"10-eael-table-of-content\" class=\"wp-block-heading\">3.4 \ud15c\ud37c\ub9c1<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2f4\uae08\uc9c8\ub41c H21\uac15\uc740 \ub9e4\uc6b0 \ub2e8\ub2e8\ud558\uc9c0\ub9cc \ucde8\uc131\ub3c4 \uac15\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \ud2b9\uc131\uc744 \uac1c\uc120\ud558\uae30 \uc704\ud574\uc11c\ub294 \ud15c\ud37c\ub9c1\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc628\ub3c4:<\/strong>&nbsp;\uac15\ucca0\uc744 595~675\u00b0C\ub85c \uc7ac\uac00\uc5f4\ud558\uc2ed\uc2dc\uc624.<\/li>\n\n\n\n<li><strong>\ubaa9\uc801:<\/strong>&nbsp;\ud15c\ud37c\ub9c1\uc740 \ucde8\uc131\uc744 \uac10\uc18c\uc2dc\ud0a4\uace0 \uc778\uc131\uacfc \uc5f0\uc131\uc744 \ud06c\uac8c \ud5a5\uc0c1\uc2dc\ud0a4\uba74\uc11c \uc0c1\ub2f9\ud55c \uacbd\ub3c4\ub97c \uc720\uc9c0\ud569\ub2c8\ub2e4. \uc0ac\uc6a9\ub418\ub294 \ud2b9\uc815 \uc628\ub3c4\uc640 \uc2dc\uac04\uc740 \uacbd\ub3c4\uc640 \uc778\uc131 \uc0ac\uc774\uc758 \ucd5c\uc885 \uade0\ud615\uc744 \uacb0\uc815\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li><strong>\ub2e4\uc591\ud55c \uc131\uaca9:<\/strong>&nbsp;H21\uacfc \uac19\uc740 \uace0\ud569\uae08 \uacf5\uad6c\uac15\uc758 \uacbd\uc6b0, \ub450 \ubc88 \uc774\uc0c1\uc758 \ud15c\ud37c\ub9c1 \uc0ac\uc774\ud074\uc744 \uc218\ud589\ud558\ub294 \uac83\uc774 \uc77c\ubc18\uc801\uc785\ub2c8\ub2e4. \uc774\ub294 \uad6c\uc870\uc801 \uc548\uc815\uc131\uc744 \ud655\ubcf4\ud558\uace0, \uc794\ub958 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ub97c \ubcc0\ud0dc\uc2dc\ud0a4\uba70, 2\ucc28 \uacbd\ud654\ub97c \uc720\ub3c4\ud558\uc5ec \uace0\uc628\uc5d0\uc11c\uc758 \uc131\ub2a5\uc744 \ub354\uc6b1 \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\">H21\uac15\uc758 \uacbd\ub3c4 \ubc0f \ud15c\ud37c\ub9c1 \uc628\ub3c4 \ud45c<\/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>\ud15c\ud37c\ub9c1 \uc628\ub3c4<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>\ub85d\uc6f0 C<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">\uac08\uc99d\uc774 \ud574\uc18c\ub41c \uac83\ucc98\ub7fc<\/td><td class=\"has-text-align-center\" data-align=\"center\">55<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">600\u00b0F\/315\u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">51<\/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\">52<\/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\">52<\/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\">54<\/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\">54<\/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\">51<\/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\">40<\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">1300\u00b0F\/705\u00b0C<\/td><td class=\"has-text-align-center\" data-align=\"center\">32<\/td><\/tr><\/tbody><\/table><figcaption class=\"wp-element-caption\">\uc2e4\ud5d8 \uc870\uac74: 1. \uc608\uc5f4 \uc628\ub3c4 815\u00b0C(1500\u00b0F) 2. \uacbd\ud654 \uc628\ub3c4 1160\u00b0C(2125\u00b0F) 3. \uc624\uc77c \ub610\ub294 \uc5fc \ub2f4\uae08\uc9c8 4. \ud654\ud559 \uc870\uc131: \ud0c4\uc18c 0.33%, \ub9dd\uac04 0.25%, \uaddc\uc18c 0.45%, \ud06c\ub86c 3.30%, \ubc14\ub098\ub4d0 0.45%, \ud145\uc2a4\ud150 9.15%<\/figcaption><\/figure>\n\n\n\n<h3 id=\"11-eael-table-of-content\" class=\"wp-block-heading\">3.5 \uc911\uc694\ud55c \uacf5\uc815 \uad00\ub9ac<\/h3>\n\n\n\n<h4 id=\"12-eael-table-of-content\" class=\"wp-block-heading\">3.5.1 \ud0c8\ud0c4 \ubc29\uc9c0<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">H21\uac15\uc740 \uace0\uc628 \uc5f4\ucc98\ub9ac \uc2dc \ud0c8\ud0c4, \uc989 \ud45c\uba74\uc5d0\uc11c \ud0c4\uc18c\uac00 \uc190\uc2e4\ub418\ub294 \ud604\uc0c1\uc774 \ubc1c\uc0dd\ud558\uae30 \uc26c\uc6b0\uba70, \uc774\ub85c \uc778\ud574 \ud45c\uba74\uce35\uc774 \ubd80\ub4dc\ub7fd\uace0 \uc57d\ud574\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\ud574\uacb0\ucc45:<\/strong>&nbsp;\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \ucc98\ub9ac \uacfc\uc815\uc5d0\uc11c\ub294 \ubcf4\ud638 \uc870\uce58\uac00 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. \uc5ec\uae30\uc5d0\ub294 \uc81c\uc5b4 \ubd84\uc704\uae30\ub85c, \uc5fc\uc695 \uc0ac\uc6a9 \ub610\ub294 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \ud638\uc77c\uacfc \uac19\uc740 \ubcf4\ud638 \uc7ac\ub8cc\ub85c \ubd80\ud488\uc744 \uac10\uc2f8\ub294 \uac83 \ub4f1\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h4 id=\"13-eael-table-of-content\" class=\"wp-block-heading\">3.5.2 \ub2e8\uc870 \ud6c4 \ub0c9\uac01<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">H21\uc740 \uacbd\ud654\uc131\uc774 \ub9e4\uc6b0 \ub192\uae30 \ub54c\ubb38\uc5d0 \ub2e8\uc870 \uc791\uc5c5 \uc9c1\ud6c4 \ub2e8\uc870\ud488\uc744 \ucc9c\ucc9c\ud788 \ub0c9\uac01\ud574\uc57c \ud569\ub2c8\ub2e4(\uc608: \ub178\ub0c9 \ub610\ub294 \ub2e8\uc5f4\uc7ac\uc5d0 \ubb3b\uae30).<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc774\uc720:<\/strong>&nbsp;\uace0\uc628\uc5d0\uc11c \uacf5\ub7ad\ud558\ub294 \ub178\uba40\ub77c\uc774\uc9d5 \uacf5\uc815\uc744 \ud53c\ud558\uc2ed\uc2dc\uc624. \uc774 \uacf5\uc815\uc740 \uac15\ucca0\uc744 \ubd80\ubd84\uc801\uc73c\ub85c \ub610\ub294 \uc644\uc804\ud788 \uacbd\ud654\uc2dc\ucf1c \uc758\ub3c4\ub41c \uacbd\ud654 \ubc0f \ud15c\ud37c\ub9c1 \uacf5\uc815 \uc804\uc5d0 \ucde8\uc131 \ubc0f \uade0\uc5f4\uc744 \uc720\ubc1c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc11c\uc11c\ud788 \ub0c9\uac01\ud558\uba74 \ud6c4\uc18d \uc5f4\ucc98\ub9ac\uc5d0 \ub354\uc6b1 \uc801\ud569\ud55c \uad6c\uc870\ub97c \uc5bb\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">H21 \uacf5\uad6c\uac15\uc758 \uc5f4\ucc98\ub9ac\uc5d0 \ub300\ud55c \uc774\ub7ec\ud55c \uccb4\uacc4\uc801\uc778 \uc811\uadfc \ubc29\uc2dd\uc740 \ud574\ub2f9 \uc18c\uc7ac\uac00 \uc758\ub3c4\ub41c \uace0\uc628 \uac00\uacf5 \uacf5\uad6c \uc6a9\ub3c4\uc5d0 \ud544\uc694\ud55c \uace0\uc131\ub2a5\uc744 \uc81c\uacf5\ud558\ub3c4\ub85d \ubcf4\uc7a5\ud569\ub2c8\ub2e4. \uac01 \ub9e4\uac1c\ubcc0\uc218\uc5d0 \ub300\ud55c \uc815\ubc00\ud55c \uc81c\uc5b4\uac00 \uc131\uacf5\uc758 \ud575\uc2ec\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 id=\"14-eael-table-of-content\" class=\"wp-block-heading\">4. H21 \uacf5\uad6c\uac15\uc758 \uc801\uc6a9 \ubd84\uc57c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">H21\uac15\uc740 \uace0\uc628 \uacbd\ub3c4\uc640 \ub0b4\ub9c8\ubaa8\uc131\uc774 \ub6f0\uc5b4\ub098 \ub2e4\uc591\ud55c \uace0\uc628 \uac00\uacf5 \uacf5\uc815\uc5d0 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub2e8\uc870 \uae08\ud615 \ubc0f \uc778\uc11c\ud2b8<\/li>\n\n\n\n<li>\uace0\uc628 \uc791\uc5c5\uc6a9 \ud380\uce58, \ud53c\uc5b4\uc11c \ubc0f \ub9e8\ub4dc\ub9b4<\/li>\n\n\n\n<li>\uc5f4 \uc555\ucd9c \uae08\ud615<\/li>\n\n\n\n<li>\uace0\uc628 \uc804\ub2e8 \ube14\ub808\uc774\ub4dc(\ud2b9\ud788 \uadf9\ud55c \ud658\uacbd \uc870\uac74\uc5d0 \uc801\ud569\ud558\uba70, \uacbd\uc6b0\uc5d0 \ub530\ub77c H25\uc640 \ud568\uaed8 \uc0ac\uc6a9\ub428)<\/li>\n\n\n\n<li>\ub2e4\uc774\uce90\uc2a4\ud305 \uae08\ud615 (\ud2b9\ud788 \ud669\ub3d9\uc6a9)<\/li>\n\n\n\n<li>\uc8fc\uc870\uc6a9 \uae08\ud615 (\ud2b9\ud788 \uc587\uc740 \ubd80\ubd84\uc5d0\uc11c \ub0b4\ub9c8\ubaa8\uc131\uc744 \uc5b4\ub290 \uc815\ub3c4 \ud76c\uc0dd\ud558\ub354\ub77c\ub3c4 \ud30c\uc190 \uc800\ud56d\uc131\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\ub294 \uacbd\uc6b0)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">H21\uc740 \uc911\uaddc\ubaa8 \uc0dd\uc0b0\uc744 \uc704\ud55c \ud234\ub9c1\uc5d0 \uc801\ud569\ud55c \uc120\ud0dd\uc73c\ub85c \uc5ec\uaca8\uc9c0\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 id=\"15-eael-table-of-content\" class=\"wp-block-heading\">5. H21 \uacf5\uad6c\uac15 \ub3d9\ub4f1 \ub4f1\uae09<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\uc720\ub7fd (EN)<\/strong>: X30WCrV9-3 (1.2581)<\/li>\n\n\n\n<li><strong>\ub3c5\uc77c(DIN)<\/strong>: 1.2581<\/li>\n\n\n\n<li><strong>\uc77c\ubcf8 (JIS)<\/strong>: SKD5<\/li>\n\n\n\n<li><strong>\ud504\ub791\uc2a4 (AFNOR)<\/strong>: 32CDV12-28<\/li>\n\n\n\n<li><strong>\uc911\uad6d(GB)<\/strong>: 3Cr2W8V<\/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 popmake-16052\"><a class=\"wp-block-button__link wp-element-button\">\uacac\uc801 \uc694\uccad\uc11c \uc591\uc2dd \uc5f4\uae30<\/a><\/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 H21 \\\/ 1.2581 \\\/ SKD5 Tungsten Hot Work Tool Steel Round Bar\",\n    \"image\": \"https:\\\/\\\/aobosteel.com\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/H21-TOOL-STEEL.avif\",\n    \"description\": \"Premium Forged H21 (1.2581 \\\/ SKD5) Tungsten Hot Work Tool Steel directly from Aobo Steel factory. 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These types of steels were among the earliest high-alloy options developed for demanding high-temperature tooling applications. 1. H21 Tool Steel Chemical Composition The performance of H21 steel is largely determined by its alloying elements. A typical composition includes: 2. H21 Tool [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9156,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_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-9390","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>H21 Tool Steel | 1.2581 | SKD7 Supplier - AoboSteel<\/title>\n<meta name=\"description\" content=\"Explore H21 tool steel, a tungsten-based hot-work tool steel ideal for high-temperature applications. 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