{"id":16032,"date":"2026-06-23T12:50:12","date_gmt":"2026-06-23T04:50:12","guid":{"rendered":"https:\/\/aobosteel.com\/?p=16032"},"modified":"2026-06-23T12:50:55","modified_gmt":"2026-06-23T04:50:55","slug":"8620-steel-properties","status":"publish","type":"post","link":"https:\/\/aobosteel.com\/ko\/blog\/8620-steel-properties\/","title":{"rendered":"8620\uac15\uc758 \ud2b9\uc131: \uad6c\uc131, \uacbd\ub3c4 \ubc0f \uc6a9\ub3c4"},"content":{"rendered":"<h1 id=\"h-8620-steel-properties-composition-hardness-and-uses\" class=\"wp-block-heading has-large-font-size\">8620\uac15\uc758 \ud2b9\uc131: \uad6c\uc131, \uacbd\ub3c4 \ubc0f \uc6a9\ub3c4<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">8620(AISI\/SAE 8620)\uc740 \uc800\ud0c4\uc18c \ub2c8\ucf08-\ud06c\ub86c-\ubab0\ub9ac\ube0c\ub374 \ud569\uae08\uac15\uc73c\ub85c, \uce68\ud0c4 \uacbd\ud654 \ucc98\ub9ac\ub97c \uc704\ud574 \uc81c\uc870\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \uae30\uc5b4, \ucd95, \ud540 \ub4f1 \ub2e8\ub2e8\ud558\uace0 \ub0b4\ub9c8\ubaa8\uc131\uc774 \ub6f0\uc5b4\ub09c \ud45c\uba74\uacfc \uac15\ud558\uace0 \uc5f0\uc131 \uc788\ub294 \ub0b4\ubd80 \uad6c\uc870\uac00 \ud544\uc694\ud55c \ubd80\ud488\uc5d0 \ub110\ub9ac \uc0ac\uc6a9\ub418\ub294 \uce68\ud0c4\uac15 \uc911 \ud558\ub098\uc785\ub2c8\ub2e4. \uc911\uad6d \ud45c\uc900\uc5d0\uc11c\ub294 20CrNiMo\uc5d0 \ud574\ub2f9\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">8620\uc740 \uacf5\uad6c\uac15\uc774 \uc544\ub2d9\ub2c8\ub2e4. \ud45c\uba74 \uacbd\ud654\ud615 \uacf5\uc5c5\uc6a9\uac15\uc785\ub2c8\ub2e4. \ud0c4\uc18c \ud568\ub7c9\uc774 \uc57d 0.20%\uc5d0 \ubd88\uacfc\ud558\uae30 \ub54c\ubb38\uc5d0 \uacf5\uad6c\uac15 \uc218\uc900\uc758 \uacbd\ub3c4\ub85c \uc804\uccb4 \uacbd\ud654\ub97c \ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uc644\uc804\ud788 \uacbd\ud654\ub418\ub354\ub77c\ub3c4 \uc774 \uc815\ub3c4\uc758 \ud0c4\uc18c \ud568\ub7c9\uc5d0\uc11c\ub294 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\uc758 \uacbd\ub3c4\uac00 \uc57d 40~45 HRC\uc5d0 \uadf8\uce69\ub2c8\ub2e4. \ud45c\uba74 \uacbd\ub3c4\ub294 \ub2f4\uae08\uc9c8 \uc804\uc5d0 \uc678\uce35\uc5d0 \ud0c4\uc18c\ub97c \ud48d\ubd80\ud558\uac8c \ud558\ub294 \uce68\ud0c4 \ucc98\ub9ac\ub97c \ud1b5\ud574 \uc5bb\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 id=\"h-chemical-composition\" class=\"wp-block-heading\">\ud654\ud559\uc801 \uc870\uc131<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\uc694\uc18c<\/td><td>AISI 8620<\/td><\/tr><tr><td>\ud0c4\uc18c \u00a9<\/td><td>0.18\u20130.23%<\/td><\/tr><tr><td>\ub9dd\uac04(Mn)<\/td><td>0.70\u20130.90%<\/td><\/tr><tr><td>\uc2e4\ub9ac\ucf58(Si)<\/td><td>0.15\u20130.35%<\/td><\/tr><tr><td>\ub2c8\ucf08(Ni)<\/td><td>0.40\u20130.70%<\/td><\/tr><tr><td>\ud06c\ub86c(Cr)<\/td><td>0.40\u20130.60%<\/td><\/tr><tr><td>\ubab0\ub9ac\ube0c\ub374(Mo)<\/td><td>0.15\u20130.25%<\/td><\/tr><tr><td>\uc778(P)<\/td><td>0.035% \ucd5c\ub300<\/td><\/tr><tr><td>\ud669(S)<\/td><td>0.040% \ucd5c\ub300<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\ub2c8\ucf08\uc740 \ucf54\uc5b4\uc5d0 \uc778\uc131\uc744 \ubd80\uc5ec\ud569\ub2c8\ub2e4. \ud06c\ub86c\uacfc \ubab0\ub9ac\ube0c\ub374\uc740 \uc624\uc77c \ud01c\uce6d \uc2dc \ud45c\uba74 \uacbd\ub3c4\ub97c \ucd5c\ub300\ub85c \ub04c\uc5b4\uc62c\ub9ac\ub294 \ub370 \ud544\uc694\ud55c \uce68\ud0c4\uce35\uc758 \uacbd\ud654\uc131\uc744 \uc81c\uacf5\ud558\uba70, \ubab0\ub9ac\ube0c\ub374\uc740 \ub610\ud55c \ud15c\ud37c \ucde8\uc131 \uc704\ud5d8\uc744 \uc904\uc5ec\uc90d\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud569\uae08 \uc131\ubd84\ub4e4\uc740 \uc7a5\uc2dc\uac04\uc758 \uce68\ud0c4 \uacf5\uc815 \ub3d9\uc548 \ubbf8\uc138\ud55c \uacb0\uc815\ub9bd \uad6c\uc870\ub97c \uc720\uc9c0\ud558\ub294 \ub370 \uae30\uc5ec\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 id=\"h-equivalent-grades\" class=\"wp-block-heading\">\ub3d9\ub4f1\ud55c \ub4f1\uae09<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\uae30\uc900<\/td><td>\uc9c0\uc815<\/td><\/tr><tr><td>AISI\/SAE<\/td><td>8620<\/td><\/tr><tr><td>GB(\uc911\uad6d)<\/td><td>20CrNiMo<\/td><\/tr><tr><td>JIS(\uc77c\ubcf8)<\/td><td>SNCM220<\/td><\/tr><tr><td>DIN \/ EN<\/td><td>21NiCrMo2 (1.6523)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 id=\"h-how-8620-is-used\" class=\"wp-block-heading\">8620\uc740 \uc5b4\ub5bb\uac8c \uc0ac\uc6a9\ub418\ub098\uc694?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">8620\uc740 \uac70\uc758 \ud56d\uc0c1 \uce68\ud0c4 \ucc98\ub9ac\ub41c \uc0c1\ud0dc\ub85c \uacf5\uae09 \ubc0f \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc644\uc131\ub41c \ubd80\ud488\uc740 \ub0b4\ub9c8\ubaa8\uc131\uc744 \uc704\ud55c \ub2e8\ub2e8\ud55c \ud45c\uba74\uce35\uacfc \ucda9\uaca9 \ubc0f \uad7d\ud798 \ud558\uc911\uc744 \uacac\ub51c \uc218 \uc788\ub294 \ubd80\ub4dc\ub7fd\uace0 \uac15\uc778\ud55c \uc2ec\uce35, \uc774\ub807\uac8c \ub450 \uac1c\uc758 \ub69c\ub837\ud55c \uc601\uc5ed\uc73c\ub85c \ub098\ub269\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc644\uc804 \uce68\ud0c4 \ubc0f \ud15c\ud37c\ub9c1 \uacf5\uc815\uc744 \uac70\uce58\uba74 \uc911\uc2ec\ubd80\ub294 30~42 HRC\uc758 \uacbd\ub3c4\ub97c \uac00\uc9c0\uba70 \uc6b0\uc218\ud55c \uc778\uc131\uacfc \uc5f0\uc131\uc744 \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \uce68\ud0c4\ub41c \ud45c\uba74\uc740 58~63 HRC\uc758 \uacbd\ub3c4\uc5d0 \ub3c4\ub2ec\ud558\uba70, \uce68\ud0c4 \uc2dc\uac04\uacfc \uc628\ub3c4\uc5d0 \ub530\ub77c \uce68\ud0c4\uce35 \uae4a\uc774\ub294 \uc77c\ubc18\uc801\uc73c\ub85c 0.5~2.0 mm\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uc77c\ubc18\uc801\uc778 \uc5f4\ucc98\ub9ac \uc21c\uc11c\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\ubaa9\ud45c \uce68\ud0c4 \uae4a\uc774\uc5d0 \ub530\ub77c \uc218 \uc2dc\uac04 \ub3d9\uc548 \ud0c4\uc18c\uac00 \ud48d\ubd80\ud55c \ubd84\uc704\uae30\uc5d0\uc11c \uc57d 925\u00b0C\ub85c \uce68\ud0c4 \ucc98\ub9ac\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc2dd\ud78c \ub2e4\uc74c \uc57d 840~870\u00b0C\ub85c \ub2e4\uc2dc \uac00\uc5f4\ud558\uc5ec \uacb0\uc815\ub9bd\uc744 \ubbf8\uc138\ud654\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc624\uc77c \ub2f4\uae08\uc9c8.<\/li>\n\n\n\n<li>\ucf00\uc774\uc2a4\uc758 \uacbd\ub3c4\ub97c \uc720\uc9c0\ud558\uae30 \uc704\ud574 \uc57d 150~200\u00b0C\uc5d0\uc11c \ud15c\ud37c\ub9c1\ud558\uc2ed\uc2dc\uc624.<\/li>\n<\/ol>\n\n\n\n<h2 id=\"h-applications\" class=\"wp-block-heading\">\uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">8620\uc740 \ub2e8\ub2e8\ud55c \ud45c\uba74\uacfc \uacac\uace0\ud55c \ub0b4\ubd80\uac00 \ub3d9\uc2dc\uc5d0 \ud544\uc694\ud55c \ubd80\ud488\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc790\ub3d9\ucc28 \ubcc0\uc18d\uae30 \uae30\uc5b4<\/li>\n\n\n\n<li>\ucc28\ub3d9 \uae30\uc5b4 \ubc0f \ud53c\ub2c8\uc5b8<\/li>\n\n\n\n<li>\ucea0\ucd95 \ubc0f \ucea0\ud314\ub85c\uc6cc<\/li>\n\n\n\n<li>\ud0b9\ud540\uacfc \uc190\ubaa9\ud540<\/li>\n\n\n\n<li>\ubd80\uc2f1 \ubc0f \ubca0\uc5b4\ub9c1<\/li>\n\n\n\n<li>\uc911\ud558\uc911 \uc0e4\ud504\ud2b8<\/li>\n\n\n\n<li>\uccb4\uc778 \ub9c1\ud06c\uc640 \ud540<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\uacac\uace0\ud55c \uc911\uc2ec\ubd80\ub294 \ucda9\uaca9 \ubc0f \uad7d\ud798 \ud558\uc911\uc744 \uacac\ub514\uace0, \ub2e8\ub2e8\ud55c \uc678\ud53c\ub294 \ub9c8\ubaa8\uc5d0 \uac15\ud558\uace0 \ud45c\uba74 \ud53c\ub85c \uac15\ub3c4\ub97c \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4. \ub610\ud55c, \uce68\ud0c4\uce35\uc740 \uc720\uc775\ud55c \uc555\ucd95 \uc794\ub958 \uc751\ub825\uc744 \uc720\uc9c0\ud558\uc5ec \ud53c\ub85c \uc218\uba85\uc744 \ub354\uc6b1 \uc5f0\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 id=\"h-8620-vs-tool-steel\" class=\"wp-block-heading\">8620 vs \uacf5\uad6c\uac15<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">8620\uacfc \uacf5\uad6c\uac15\uc740 \uc11c\ub85c \ub2e4\ub978 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\ub294 \ub370 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc544\ub798 \ud45c\ub294 8620\uacfc \uacf5\uad6c\uac15\uc744 \ube44\uad50\ud55c \uac83\uc785\ub2c8\ub2e4. <a href=\"https:\/\/aobosteel.com\/ko\/d2-tool-steel\/\">\ub5142<\/a>, \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 \uc804\uccb4 \uacbd\ud654\ud615 \ub0c9\uac04 \uac00\uacf5 \uacf5\uad6c\uac15\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>\uce21\uba74<\/td><td>8620 (\uce68\ud0c4 \ucc98\ub9ac)<\/td><td>D2 \uacf5\uad6c\uac15<\/td><\/tr><tr><td>\ud0c4\uc18c \ud568\ub7c9<\/td><td>~0.20%<\/td><td>~1.50%<\/td><\/tr><tr><td>\uacbd\ud654 \ubc29\ubc95<\/td><td>\uce68\ud0c4 \ud6c4 \ub2f4\uae08\uc9c8<\/td><td>\uacf5\uae30 \uc911\uc5d0\uc11c \uacbd\ud654<\/td><\/tr><tr><td>\ud45c\uba74 \uacbd\ub3c4<\/td><td>58\u201363 HRC<\/td><td>58\u201360 HRC<\/td><\/tr><tr><td>\ucf54\uc5b4 \uacbd\ub3c4<\/td><td>30\u201342 HRC<\/td><td>58~60 HRC (\ud45c\uba74\uacfc \ub3d9\uc77c)<\/td><\/tr><tr><td>\ub9c8\ubaa8 \uae4a\uc774 \ud55c\uacc4<\/td><td>\ucf00\uc774\uc2a4 \ub450\uaed8(\ucd5c\ub300 \uc57d 2mm)<\/td><td>\uc804\uccb4 \uc139\uc158\uc744 \ud1b5\ud574<\/td><\/tr><tr><td>\uc7ac\ubd84\uc1c4 \uac00\ub2a5\uc131<\/td><td>\ud55c\uc815\ub41c \uacbd\uc6b0, \ud574\ub2f9 \ucf00\uc774\uc2a4\ub294 \uc18c\ubaa8\ub429\ub2c8\ub2e4.<\/td><td>\uc88b\ub124\uc694, \uadf8 \uad6c\uac04\uc740 \ud798\ub4e4\uc5c8\uc5b4\uc694.<\/td><\/tr><tr><td>\uac15\uc778\ud568<\/td><td>\ud6cc\ub96d\ud558\uace0 \uacac\uace0\ud55c \ucf54\uc5b4<\/td><td>\ubcf4\ud1b5\uc758<\/td><\/tr><tr><td>\uc8fc\uc694 \uc6a9\ub3c4<\/td><td>\uae30\uc5b4, \ucd95, \ud540<\/td><td>\ub2e4\uc774, \ud380\uce58, \uc808\uc0ad \uacf5\uad6c<\/td><\/tr><tr><td>\uc0c1\ub300\uc801 \ube44\uc6a9<\/td><td>\ub0ae\ucd94\ub2e4<\/td><td>\ub354 \ub192\uc740<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 id=\"h-why-8620-cannot-replace-tool-steel\" class=\"wp-block-heading\">8620\uc774 \uacf5\uad6c\uac15\uc744 \ub300\uccb4\ud560 \uc218 \uc5c6\ub294 \uc774\uc720\ub294 \ubb34\uc5c7\uc77c\uae4c\uc694?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">8620 \ubd80\ud488\uc758 \uacbd\ub3c4\ub294 \uc587\uc740 \uce68\ud0c4\uce35\uc5d0\ub9cc \uad6d\ud55c\ub418\uc5b4 \uc788\uc5b4 \uc0ac\uc6a9\uc5d0 \uc81c\uc57d\uc774 \uc788\uc2b5\ub2c8\ub2e4. \ubc18\ubcf5\uc801\uc778 \uc7ac\uc5f0\ub9c8\uac00 \ubd88\uac00\ub2a5\ud55c\ub370, \uc7ac\uc5f0\ub9c8\ud560 \ub54c\ub9c8\ub2e4 \uce68\ud0c4\uce35\uc758 \uc77c\ubd80\uac00 \uc81c\uac70\ub418\uace0, \uce68\ud0c4\uce35\uc774 \uc644\uc804\ud788 \ub2f3\uc544 \uc5c6\uc5b4\uc9c0\uba74 \ubd80\ud488\uc774 \ube60\ub974\uac8c \ub9c8\ubaa8\ub418\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \ubc18\uba74, \uc804\uccb4\uac00 \uacbd\ud654\ub41c \uacf5\uad6c\uac15\uc740 \uc5ec\ub7ec \ubc88 \uc7ac\uc5f0\ub9c8\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uac19\uc740 \uc774\uc720\ub85c 8620\uc740 \uc808\uc0ad \uacf5\uad6c\uc5d0\ub3c4 \uc801\ud569\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc808\uc0ad\ub0a0\uc758 \uacbd\ub3c4\uac00 \uce68\ud0c4\uce35\uc758 \uacbd\ub3c4\uc5d0 \ube44\ub840\ud558\uae30 \ub54c\ubb38\uc5d0 \uce68\ud0c4\uce35\uc774 \ub9c8\ubaa8\ub418\uba74 \uc808\uc0ad\ub0a0\ub3c4 \ubb34\ub38c\uc9c0\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \ub610\ud55c, 8620\uc740 \uace0\uc628 \uac00\uacf5\uc5d0\ub3c4 \uc801\ud569\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uace0\uc628 \uac00\uacf5 \uc2dc\uc5d0\ub294 \uce68\ud0c4\uce35\uc774 \uacfc\ub3c4\ud558\uac8c \uacbd\ud654\ub418\uc5b4 \ub0b4\ubd80\uac00 \uace0\uc628 \uac15\ub3c4\ub97c \uc720\uc9c0\ud558\uae30 \uc5b4\ub835\uace0, \uace0\uc555\ucd95 \uae08\ud615 \uac00\uacf5\uc5d0\ub3c4 \uc801\ud569\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uace0\uc555\ucd95 \uae08\ud615 \uac00\uacf5\uc758 \uacbd\uc6b0, 60 HRC \uc815\ub3c4\uc758 \uce68\ud0c4\uce35\uc774\ub77c\ub3c4 \ub108\ubb34 \uc587\uc544 \ubb34\uac70\uc6b4 \uc131\ud615 \ud558\uc911\uc744 \uacac\ub514\uc9c0 \ubabb\ud569\ub2c8\ub2e4. \ub0b4\ubd80\uac00 \uc5f0\uc57d\ud558\uc5ec \uce68\ud0c4\uce35 \uc544\ub798\uc5d0\uc11c \ubcc0\ud615\ub418\uba74\uc11c \uce68\ud0c4\uce35\uc5d0 \uade0\uc5f4\uc774\ub098 \ubc15\ub9ac\uac00 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 id=\"h-when-8620-is-the-right-choice\" class=\"wp-block-heading\">8620\uc774 \uc62c\ubc14\ub978 \uc120\ud0dd\uc778 \uacbd\uc6b0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">8620\uac15\uc740 \uad7d\ud798 \ubc0f \ucda9\uaca9 \ud558\uc911\uc744 \ubc1b\ub294 \uae30\uc5b4\uc640 \ucd95\uc5d0 \uc801\ud569\ud55c \uc18c\uc7ac\uc774\uba70, \ub6f0\uc5b4\ub09c \uac15\ub3c4\ub97c \uc694\uad6c\ud569\ub2c8\ub2e4. \ub9c8\ubaa8\uac00 \ud45c\uba74\uc5d0 \uc9d1\uc911\ub418\ub294 \uacbd\uc6b0, \ubcf5\uc7a1\ud55c \ud615\uc0c1\uc73c\ub85c \uc778\ud574 \uc804\uccb4 \uacbd\ud654 \ucc98\ub9ac \uc2dc \ubcc0\ud615\uc774 \uc2ec\ud55c \uacbd\uc6b0, \uadf8\ub9ac\uace0 \uce68\ud0c4\uce35\uc774 \uc555\ucd95 \uc794\ub958 \uc751\ub825\uc744 \ubc1c\uc0dd\uc2dc\ucf1c \ub192\uc740 \ud53c\ub85c \uc800\ud56d\uc131\uc774 \uc911\uc694\ud55c \uacbd\uc6b0\uc5d0 \ud2b9\ud788 \ud6a8\uacfc\uc801\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 id=\"h-common-misconceptions\" class=\"wp-block-heading\">\ud754\ud788 \uc798\ubabb \uc54c\ub824\uc9c4 \uc0ac\uc2e4\ub4e4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u201c&quot;8620\uc740 \uacf5\uad6c\uac15\ucc98\ub7fc \uacbd\ud654\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.&quot;\u201d<\/strong> \ubd88\uac00\ub2a5\ud569\ub2c8\ub2e4. \ud0c4\uc18c \ud568\ub7c9\uc774 \uc57d 0.20% \uc815\ub3c4\uc778 \uacbd\uc6b0, \uc77c\ubc18\uc801\uc778 \ub2f4\uae08\uc9c8\ub85c\ub294 \uc720\uc6a9\ud55c \uacbd\ub3c4\ub97c \uac00\uc9c4 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub97c \ud615\uc131\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \ud45c\uba74\uc744 \uba3c\uc800 \uce68\ud0c4 \ucc98\ub9ac\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u201c8620\uc740 \ub354 \uc800\ub834\ud55c \ub300\uc548\uc785\ub2c8\ub2e4.\u201d <a href=\"https:\/\/aobosteel.com\/ko\/o1-tool-steel\/\">\uc6241<\/a> \ub610\ub294 <a href=\"https:\/\/aobosteel.com\/ko\/a2-tool-steel\/\">A2<\/a> &quot;\uc8fd\uc744 \uc704\ud574.&quot;\u201d<\/strong> \uadf8\ub807\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ubd80\ub4dc\ub7ec\uc6b4 \uc2ec\uc7ac\uc640 \uc587\uc740 \uc678\ud53c \ub54c\ubb38\uc5d0 \ub2e4\uc774 \ub610\ub294 \uc808\uc0ad \uacf5\uad6c\uc5d0 \uc801\ud569\ud558\uc9c0 \uc54a\uc73c\uba70, 8620 \ub2e4\uc774\ub294 \uae08\ubc29 \ud30c\uc190\ub420 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u201c8620\uacfc D2\ub294 \ub458 \ub2e4 \ud06c\ub86c\uc744 \ud568\uc720\ud558\uace0 \uc788\ub2e4\ub294 \uc810\uc5d0\uc11c \uc720\uc0ac\ud569\ub2c8\ub2e4.\u201d<\/strong> \uadf8\ub807\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. D2\ub294 \uc57d 12%\uc758 \ud06c\ub86c\uc744 \ud568\uc720\ud558\uace0 \uc788\ub294\ub370, \uc774 \ud06c\ub86c\uc740 \ud0c4\ud654\ubb3c\uc744 \ud615\uc131\ud558\uc5ec \ub0b4\ub9c8\ubaa8\uc131\uc744 \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4. 8620\uc740 \uacbd\ud654\uc131\uc744 \uc704\ud574\uc11c\ub9cc 0.4~0.6%\uc758 \ud06c\ub86c\uc744 \ud568\uc720\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uac19\uc740 \uc6d0\uc18c\uc774\uc9c0\ub9cc \uc6a9\ub3c4\uc640 \ud568\ub7c9\uc774 \ub9e4\uc6b0 \ub2e4\ub985\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 id=\"h-related-pages\" class=\"wp-block-heading\">\uad00\ub828 \ud398\uc774\uc9c0<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/aobosteel.com\/ko\/blog\/case-hardening-steel-guide\/\">\ud45c\uba74 \uacbd\ud654\uac15 \uac00\uc774\ub4dc<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/ko\/what-is-tool-steel\/\">\uacf5\uad6c\uac15\uc774\ub780 \ubb34\uc5c7\uc778\uac00<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/ko\/how-to-select-tool-steels\/\">\uacf5\uad6c\uac15 \ub4f1\uae09 \uc120\ud0dd \uac00\uc774\ub4dc<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/ko\/blog\/4140-steel-properties\/\">4140\uac15\uc758 \ud2b9\uc131<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/ko\/cold-work-tool-steels\/\">\ub0c9\uac04 \uac00\uacf5 \uacf5\uad6c\uac15 \uac00\uc774\ub4dc<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>8620 Steel Properties: Composition, Hardness, and Uses 8620 (AISI\/SAE 8620) is a low-carbon nickel-chromium-molybdenum alloy steel made for case hardening by carburizing. It is one of the most widely used carburizing grades, chosen for gears, shafts, pins, and other parts that need a hard, wear-resistant surface over a tough, ductile core. In Chinese standards, it [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":16033,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","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":""},"categories":[22],"tags":[],"class_list":["post-16032","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>8620 Steel Properties: Composition, Hardness, and Uses - AoboSteel<\/title>\n<meta name=\"description\" content=\"8620 is a low-carbon Ni-Cr-Mo carburizing steel for gears, shafts, and pins. 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