{"id":9555,"date":"2025-08-05T15:18:22","date_gmt":"2025-08-05T07:18:22","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9555"},"modified":"2026-07-24T11:31:22","modified_gmt":"2026-07-24T03:31:22","slug":"selection-of-steels-for-cold-extrusion","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/selection-of-steels-for-cold-extrusion\/","title":{"rendered":"\ub0c9\uac04 \uc555\ucd9c \uae08\ud615\uac15 \uc120\ud0dd \uac00\uc774\ub4dc | D2, A2, H13, M2 \uc124\uba85"},"content":{"rendered":"
\"\"<\/span>
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\uc9d1<\/mark> <\/a>> \ub0c9\uac04 \uc131\ud615 \ubc0f \uc555\ucd9c<\/mark> <\/a> \ube14\ub7ad\ud0b9 \ubc0f \ud53c\uc5b4\uc2f1 \ub2e4\uc774<\/h5><\/div>\n\n\n\n

\ub0c9\uac04 \uc555\ucd9c \uae08\ud615\uac15 \uc120\ud0dd\uc744 \uc704\ud55c \uae30\uc220 \uac00\uc774\ub4dc<\/h2><\/div>\n\n\n\n

\u2714100% UT \ud14c\uc2a4\ud2b8 \uc644\ub8cc, \ud488\uc9c8 \ubcf4\uc99d<\/h4><\/div>\n\n\n\n

\u2714ESR, LF+VD \uc6a9\uc735 \ubc29\uc2dd\uc73c\ub85c \uc0ac\uc6a9 \uac00\ub2a5<\/h4><\/div>\n\n\n\n

\u2714\uacbd\uc7c1\ub825 \uc788\ub294 \uacf5\uc7a5 \uc9c1\ud310 \uac00\uaca9<\/h4><\/div>\n\n\n\n
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\ube60\ub978 \ubb38\uc758<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n
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\ud604\ub300 \uc81c\uc870 \uc0b0\uc5c5\uc5d0\uc11c \ub0c9\uac04 \uc555\ucd9c\uc740 \uc790\ub3d9\ucc28, \ud56d\uacf5\uc6b0\uc8fc \ubc0f \uc0b0\uc5c5 \uae30\uacc4 \ubd84\uc57c \uc804\ubc18\uc5d0 \uac78\uccd0 \uc815\ubc00 \ubd80\ud488\uc744 \ub300\ub7c9 \uc0dd\uc0b0\ud558\ub294 \ud575\uc2ec \uacf5\uc815\uc785\ub2c8\ub2e4. \ub0c9\uac04 \uc555\ucd9c \uae08\ud615\uc758 \uc218\uba85\uc740 \uae30\uc5c5\uc758 \uc218\uc775\uc131\uc5d0 \uc9c1\uc811\uc801\uc778 \uc601\ud5a5\uc744 \ubbf8\uce58\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \ud380\uce58\uc640 \uae08\ud615\uc5d0 \uac00\uc7a5 \uc801\ud569\ud55c \uacf5\uad6c\uac15\uc744 \uc120\ud0dd\ud558\ub294 \uac83\uc740 \ube44\uc6a9 \ud6a8\uc728\uc131\uc744 \uadf9\ub300\ud654\ud558\ub294 \ub370 \ub9e4\uc6b0 \uc911\uc694\ud55c \uc804\ub7b5\uc801 \uacb0\uc815\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub0c9\uac04 \uc555\ucd9c\uc740 \ub0c9\uac04 \ub2e8\uc870 \ub610\ub294 \ub0c9\uac04 \ucda9\uaca9 \uc555\ucd9c\uc774\ub77c\uace0\ub3c4 \ud558\uba70, \uc77c\ubc18\uc801\uc73c\ub85c 200\u00b0C(390\u00b0F) \ubbf8\ub9cc\uc758 \uc628\ub3c4\uc5d0\uc11c \uc218\ud589\ub429\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc778 \uacf5\uc815\uc740 \uae08\uc18d \ube14\ub7ad\ud06c\ub97c \uace0\uc815\ub41c \uae08\ud615 \uce90\ube44\ud2f0\uc5d0 \ub123\uace0 \uace0\uc18d \ud380\uce58\uac00 \uae08\uc18d\uc744 \uc555\ucd95\ud558\uc5ec \uc18c\uc131 \ubcc0\ud615\uc744 \uc77c\uc73c\ucf1c \uc6d0\ud558\ub294 \ud615\uc0c1\uc744 \uc5bb\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc774 \uacf5\uc815\uc740 \uae08\ud615 \uc7ac\ub8cc\uc5d0 \ub9e4\uc6b0 \uae4c\ub2e4\ub85c\uc6b4 \uc694\uad6c \uc0ac\ud56d\uc744 \ubd80\uacfc\ud569\ub2c8\ub2e4. \uae08\ud615\uac15\uc740 \uadf9\ud788 \uc9e7\uc740 \uc2dc\uac04 \ub0b4\uc5d0 \uadf9\uc2ec\ud55c \uc555\ucd95 \uc751\ub825, \uc2ec\uac01\ud55c \ub9c8\ubaa8, \uadf8\ub9ac\uace0 \ub3d9\uc801 \ud53c\ub85c \ud558\uc911\uc744 \uacac\ub38c\ub0b4\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\ubc94\uc6a9\uac15\uc73c\ub85c\ub294 \ub354 \uc774\uc0c1 \uc704\uc758 \uc694\uad6c\uc0ac\ud56d\uc744 \ucda9\uc871\ud560 \uc218 \uc5c6\uc73c\ubbc0\ub85c \uc5f4\ucc98\ub9ac\ub41c \uacf5\uad6c\uac15\uc744 \uc0ac\uc6a9\ud574\uc57c \ud569\ub2c8\ub2e4. \uacf5\uad6c\uac15\uc744 \uc120\ud0dd\ud558\ub294 \uadfc\ubcf8\uc801\uc778 \uc774\uc720\ub294 \ub192\uc740 \uacbd\ub3c4\uc640 \ub192\uc740 \uc778\uc131\uc744 \uade0\ud615 \uc788\uac8c \uac16\ucd94\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub0c9\uac04 \uc555\ucd9c \uae08\ud615\uc5d0 \ub300\ud55c \ud575\uc2ec \uc694\uad6c \uc0ac\ud56d<\/h2>\n\n\n\n

\ub0c9\uac04 \uc555\ucd9c \ub2e4\uc774\ub294 \uc138 \uac00\uc9c0 \ud575\uc2ec \uacfc\uc81c\uc5d0 \uc9c1\uba74\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

1. \uadf9\ud55c \uc555\ub825 \ubc0f \uc555\ucd95 \uc751\ub825<\/h3>\n\n\n\n

\ub0c9\uac04 \uc555\ucd9c\uc740 \uc0c1\uc628\uc5d0\uc11c \uae08\uc18d\uc5d0 \uc18c\uc131 \ubcc0\ud615\uc744 \uc720\ub3c4\ud558\ub294 \ubc29\uc2dd\uc73c\ub85c \uc791\ub3d9\ud569\ub2c8\ub2e4. \uae08\uc18d\uc744 \ud2b9\uc815 \uae08\ud615 \uce90\ube44\ud2f0\ub97c \ud1b5\ud574 \ubc00\uc5b4 \ub123\uc73c\ub824\uba74 \uae08\ud615\uc774 \uc5c4\uccad\ub09c \ubc18\ub825\uc744 \uacac\ub38c\uc57c \ud569\ub2c8\ub2e4. \uc778\uc99d\ub41c \ud380\uce58\uc640 \uae08\ud615\uc740 \ucd5c\ub300 2415MPa(350ksi)\uc758 \uc555\ub825\uc744 \uacac\ub38c\uc57c \ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc555\ub825 \ud558\uc5d0\uc11c \uc77c\ubc18 \uac15\ucca0\uc740 \uc810\ud1a0\ucc98\ub7fc \ubcc0\ud615\ub429\ub2c8\ub2e4. \uacf5\uad6c \ubc0f \uae08\ud615\uac15\uc758 \uacbd\uc6b0 \uc555\ucd95 \uac15\ub3c4\uac00 \uac00\uc7a5 \uc911\uc694\ud55c \uace0\ub824 \uc0ac\ud56d\uc774\uba70, \uc774\ub294 \uae08\ud615\uc774 \uadf9\ud55c \uc555\ub825 \ud558\uc5d0\uc11c\ub3c4 \uc18c\uc131 \ubcc0\ud615\ub418\uac70\ub098 \ud30c\uc190\ub418\uc9c0 \uc54a\ub3c4\ub85d \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

2. \ub0b4\ub9c8\ubaa8\uc131<\/h3>\n\n\n\n

\uace0\uc555 \uc870\uac74\uc5d0\uc11c \uae08\uc18d \ube14\ub7ad\ud06c\uc640 \ub2e4\uc774 \ud45c\uba74\uc740 \uac15\ud55c \uc0c1\ub300\uc801 \uc2ac\ub77c\uc774\ub529 \ub9c8\ucc30\uc744 \uacaa\uc73c\uba70, \uc774\ub85c \uc778\ud574 \ub9c8\ubaa8\uc640 \uc811\ucc29 \ub9c8\ubaa8\uac00 \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \ub0b4\ub9c8\ubaa8\uc131\uc740 \ub2e4\uc774 \uc218\uba85\uacfc \uc644\uc81c\ud488\uc758 \uce58\uc218 \uc815\ubc00\ub3c4\ub97c \uc9c1\uc811\uc801\uc73c\ub85c \uacb0\uc815\ud558\ub294 \uc694\uc18c\uc785\ub2c8\ub2e4. \ub530\ub77c\uc11c D \uc2dc\ub9ac\uc988\uc640 \uac19\uc740 \uace0\ud0c4\uc18c, \uace0\ud06c\ub86c \uacf5\uad6c\uac15\uc774 \uc774 \ubd84\uc57c\uc5d0\uc11c \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

3. \uc778\uc131 \ubc0f \ud53c\ub85c<\/h3>\n\n\n\n

\ub192\uc740 \uc555\ub825\uacfc \ub9c8\ubaa8\ub97c \uacac\ub514\ub824\uba74 \uacbd\ub3c4\ub97c \ub192\uc5ec\uc57c \ud558\uc9c0\ub9cc, \uacbd\ub3c4\uac00 \uc9c0\ub098\uce58\uac8c \ub192\uc73c\uba74 \uac15\ucca0\uc774 \ucde8\uc131\ud574\uc9d1\ub2c8\ub2e4. \ub0c9\uac04 \uc555\ucd9c\uc740 \uc5ed\ub3d9\uc801\uc778 \ubc18\ubcf5 \uacf5\uc815\uc785\ub2c8\ub2e4. \ud2b9\ud788 \uae38\uc774 \ub300 \uc9c1\uacbd \ube44\uc728\uc774 \ub192\uc740 \uac00\ub290\ub2e4\ub780 \ud380\uce58\uc758 \uacbd\uc6b0, \ubc18\ubcf5\uc801\uc778 \ucda9\uaca9\uc5d0 \ub300\ud55c \uc778\uc131\uc774 \ubd80\uc871\ud558\uba74 \ud53c\ub85c \ud30c\uad34\ub098 \uc870\uae30 \ud30c\uc190\uc5d0 \ub9e4\uc6b0 \ucde8\uc57d\ud574\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub0c9\uac04 \uc555\ucd9c\uc6a9 \uc8fc\uc694 \uacf5\uad6c\uac15 \uc885\ub958<\/h2>\n\n\n\n

\uc694\uc57d\ud558\uc790\uba74, \ub0c9\uac04 \uc555\ucd9c \uacf5\uc815\uc5d0 \ud544\uc694\ud55c \uc7ac\ub8cc \uc120\ud0dd \uc694\uac74\uc740 \ub192\uc740 \uacbd\ub3c4, \ub192\uc740 \ub0b4\ub9c8\ubaa8\uc131, \uadf8\ub9ac\uace0 \ucda9\ubd84\ud55c \uc778\uc131\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

1. \uace0\uc18d\ub3c4\uac15(HSS)<\/h3>\n\n\n\n

\uace0\uc18d\uac15\uc740 \uc808\uc0ad \uacf5\uad6c\uc5d0\ub9cc \uc0ac\uc6a9\ub418\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \ub0c9\uac04 \uc555\ucd9c \uae08\ud615, \ud2b9\ud788 \ud380\uce58\uc640 \uae08\ud615 \uc778\uc11c\ud2b8\uc5d0\ub3c4 \ud0c1\uc6d4\ud55c \uc131\ub2a5\uc744 \ubc1c\ud718\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

HSS\ub294 \ud0c1\uc6d4\ud55c \uace0\uc628 \uacbd\ub3c4\ub97c \ub098\ud0c0\ub0b4\uba70, \ucd5c\ub300 600\u00b0C\uae4c\uc9c0 \ub192\uc740 \uacbd\ub3c4\ub97c \uc720\uc9c0\ud569\ub2c8\ub2e4. \uc21c\uac04\uc801\uc73c\ub85c \uace0\uc628\uc774 \ubc1c\uc0dd\ud558\ub294 \uace0\uc18d \uc555\ucd9c \uacf5\uc815\uc5d0\uc11c\ub3c4 HSS \ub2e4\uc774\uc758 \uc791\uc5c5\uba74\uc740 \uc5f0\ud654\ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc608\uc2dc: M2\uac15\uc740 \ub0c9\uac04 \uc555\ucd9c \ud380\uce58\uc5d0 \uc0ac\uc6a9\ub418\ub294 \ud45c\uc900 \uc7ac\uc9c8\uc785\ub2c8\ub2e4. \ub0b4\ub9c8\ubaa8\uc131 \ub4f1\uae09\uc740 7\uc774\uace0 \uc778\uc131 \ub4f1\uae09\uc740 3\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

M4\uac15\uc740 \ub192\uc740 \ub0b4\ub9c8\ubaa8\uc131\uc774 \uc694\uad6c\ub418\ub294 \ub0c9\uac04 \uc555\ucd9c \uacf5\uc815\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \ub0b4\ub9c8\ubaa8\uc131 \ub4f1\uae09\uc740 9\uc774\uace0 \uc778\uc131 \ub4f1\uae09\uc740 3\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

T15 \uac15\uc740 \ub192\uc740 \ub0b4\ub9c8\ubaa8\uc131\uc774 \uc694\uad6c\ub418\ub294 \ub0c9\uac04 \uc555\ucd9c \uacf5\uc815\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4. \ub0b4\ub9c8\ubaa8\uc131 \ub4f1\uae09\uc740 9\uc774\uace0 \uc778\uc131 \ub4f1\uae09\uc740 1\uc785\ub2c8\ub2e4. T15\ub294 \ucd5c\uace0 \uc218\uc900\uc758 \ub0b4\ub9c8\ubaa8\uc131\uc744 \uc81c\uacf5\ud558\uc9c0\ub9cc, \uadf8\ub9cc\ud07c \uc778\uc131\uc774 \ub5a8\uc5b4\uc9d1\ub2c8\ub2e4. \uce21\uba74 \ud558\uc911\uc740 \ucd5c\uc18c\ud654\ub418\uc9c0\ub9cc \uc2ec\uac01\ud55c \ub9c8\ubaa8\uac00 \ubc1c\uc0dd\ud558\ub294 \ub9e4\uc6b0 \uc548\uc815\uc801\uc778 \uc870\uac74\uc5d0\uc11c \uc791\ub3d9\ud558\ub294 \uc815\ubc00 \uae08\ud615\uc5d0 \uc801\ud569\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\n
\"M2<\/figure>
\n

M2 \uace0\uc18d\uac15<\/h4>\n\n\n\n

M2 \uace0\uc18d\uac15\uc740 \ub0c9\uac04 \uc555\ucd9c \ud380\uce58\uc5d0 \uc774\uc0c1\uc801\uc778 \uc18c\uc7ac\uc785\ub2c8\ub2e4. 62~64 HRC\ub85c \uc5f4\ucc98\ub9ac\ud558\uba74 \uc555\ucd95 \uac15\ub3c4\uac00 2068 MPa(300 ksi)\ub97c \ucd08\uacfc\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uc18c\uc7ac\ub294 \ud0c1\uc6d4\ud55c \ub0b4\ub9c8\ubaa8\uc131\uc744 \ubcf4\uc5ec\uc8fc\uba70, \ub300\ub7c9 \uc0dd\uc0b0 \uc2dc\uc5d0\ub3c4 \uce58\uc218 \uc815\ubc00\ub3c4\ub97c \ud6a8\uacfc\uc801\uc73c\ub85c \uc720\uc9c0\ud558\uace0 \uc18c\uc131 \ubcc0\ud615\uc5d0 \ub300\ud55c \uc800\ud56d\ub825\uc774 \ub6f0\uc5b4\ub0a9\ub2c8\ub2e4.<\/p>\n\n\n\n

\n
M2\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694<\/a><\/div>\n\n\n\n
\uc9c0\uae08 \ubc14\ub85c \ubb38\uc758\ud558\uc138\uc694<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n

2. \ub0c9\uac04 \uac00\uacf5 \uacf5\uad6c\uac15(D \ubc0f A \uc2dc\ub9ac\uc988)<\/h3>\n\n\n\n

\ub0c9\uac04 \uc131\ud615 \ubd84\uc57c\uc758 \uad6c\ub9e4\uc790\uc640 \uc5d4\uc9c0\ub2c8\uc5b4\uc5d0\uac8c \uac00\uc7a5 \uc77c\ubc18\uc801\uc778 \uc120\ud0dd\uc740 \uc77c\ubc18\uc801\uc73c\ub85c AISI D2(1.2379), AISI A2(1.2363) \ubc0f AISI O1(1.2510)\uc758 \uc138 \uac00\uc9c0 \uc7ac\ub8cc\ub97c \uc911\uc2ec\uc73c\ub85c \uc774\ub8e8\uc5b4\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n

AISI D2(1.2379)\ub294 \uace0\ud0c4\uc18c, \uace0\ud06c\ub86c \ub0c9\uac04 \uac00\uacf5 \uacf5\uad6c\uac15\uc73c\ub85c, \ud0c1\uc6d4\ud55c \ub0b4\ub9c8\ubaa8\uc131\uacfc \uc5f0\ud654 \uc800\ud56d\uc131\uc744 \uc790\ub791\ud569\ub2c8\ub2e4. \ub0b4\ub9c8\ubaa8\uc131 \ub4f1\uae09\uc740 8\uc810, \uc778\uc131 \ub4f1\uae09\uc740 2\uc810\uc785\ub2c8\ub2e4. D2\ub294 \uc218\uba85\uc774 \uae38\uace0 \ub300\ub7c9 \uc0dd\uc0b0\uc774 \uc694\uad6c\ub418\ub294 \uae08\ud615\uc5d0 \ucd5c\uc801\uc758 \uc120\ud0dd\uc785\ub2c8\ub2e4. \ub0c9\uac04 \uc555\ucd9c \uae08\ud615, \ud380\uce6d \uae08\ud615, \ub2e4\uc591\ud55c \uc804\ub2e8 \ube14\ub808\uc774\ub4dc \ub4f1\uc5d0 \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

D2 \uae08\ud615\uc774 \uc0ac\uc6a9 \uc911 \ud30c\uc190\uc774\ub098 \uade0\uc5f4\uc774 \ubc1c\uc0dd\ud560 \uacbd\uc6b0, AISI A2\uac00 \ucd5c\uc801\uc758 \ub300\uc548\uc774 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. A2\ub294 \ub0b4\ub9c8\ubaa8\uc131 6\uc810, \uc778\uc131 5\uc810\uc744 \ubc1b\uc544 \uade0\ud615 \uc7a1\ud78c \ud2b9\uc131\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. \ub2e4\uc6a9\ub3c4 \ub0c9\uac04 \uc131\ud615\uac15\uc778 A2\ub294 \uc6b0\uc218\ud55c \ub0b4\ub9c8\ubaa8\uc131\uacfc D2\uc5d0 \ube44\ud574 \ub6f0\uc5b4\ub09c \ub0b4\ucda9\uaca9\uc131\uc744 \uc720\uc9c0\ud558\ubbc0\ub85c, \ubcf4\ub2e4 \uae4c\ub2e4\ub85c\uc6b4 \uc6a9\ub3c4\uc5d0\ub3c4 \uc801\ud569\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc800\ub834\ud55c \uc624\uc77c \uacbd\ud654 \uacf5\uad6c\uac15\uc778 AISI O1\uc740 \uc5ec\uc804\ud788 \uc2dc\uc7a5\uc5d0\uc11c \uc0ac\uc6a9\ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4. \ub0b4\ub9c8\ubaa8\uc131\uc740 4\uc810, \uc778\uc131\uc740 8\uc810\uc744 \ubc1b\uc558\uc2b5\ub2c8\ub2e4. O1\uc758 \ub0b4\ub9c8\ubaa8\uc131\uc740 D2\uc5d0\ub294 \ubbf8\uce58\uc9c0 \ubabb\ud558\uc9c0\ub9cc, \uc778\uc131\uc740 \ub9e4\uc6b0 \ub6f0\uc5b4\ub0a9\ub2c8\ub2e4. \uae08\ud615\uc758 \uace0\uc7a5\uc774 \uc8fc\ub85c \ub9c8\ubaa8\ubcf4\ub2e4\ub294 \ud30c\uc190\uc73c\ub85c \ubc1c\uc0dd\ud558\uac70\ub098 \uc800\ub834\ud55c \uacf5\uad6c \uc7ac\ub8cc\uac00 \ud544\uc694\ud55c \uacbd\uc6b0, O1\uc740 \ub9e4\uc6b0 \uacbd\uc81c\uc801\uc778 \uc120\ud0dd\uc774 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\n
\"D2<\/figure>
\n

D2 \ub0c9\uac04 \uac00\uacf5 \uacf5\uad6c\uac15 | 1.2379 | SKD11<\/h4>\n\n\n\n

D2 \ub0c9\uac04 \uac00\uacf5 \uacf5\uad6c\uac15\uc740 \ub192\uc740 \ub0b4\ub9c8\ubaa8\uc131\uacfc \ud0c1\uc6d4\ud55c \uc555\ucd95 \uac15\ub3c4\ub97c \uacb0\ud569\ud558\uc5ec \uc555\ucd9c \ub2e4\uc774 \uc778\uc11c\ud2b8\uc5d0 \uc774\uc0c1\uc801\uc778 \uc18c\uc7ac\uc785\ub2c8\ub2e4. \uc774 \uc18c\uc7ac\ub294 60~62 HRC\uc758 \uacbd\ub3c4\uc640 \uc6b0\uc218\ud55c \uc2ec\uce35 \uacbd\ud654\uc131\uc744 \uc81c\uacf5\ud558\uba70, \uacf5\uae30 \uacbd\ud654 \ud2b9\uc131\uc73c\ub85c \uc5f4\ucc98\ub9ac \ubcc0\ud615\uc744 \ud6a8\uacfc\uc801\uc73c\ub85c \uc81c\uc5b4\ud558\uc5ec \uc7a5\uae30\uac04\uc758 \uace0\ub9c8\ubaa8 \uc0dd\uc0b0 \uc8fc\uae30 \ub3d9\uc548\uc5d0\ub3c4 \ub2e4\uc774\uc758 \uc548\uc815\uc801\uc778 \uce58\uc218 \uc815\ud655\ub3c4\uc640 \uc815\ubc00 \uacf5\ucc28\ub97c \uc720\uc9c0\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\n
D2\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694<\/a><\/div>\n\n\n\n
\uc9c0\uae08 \ubc14\ub85c \ubb38\uc758\ud558\uc138\uc694<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
\n
\"A2<\/figure>
\n

A2 \ub0c9\uac04 \uac00\uacf5 \uacf5\uad6c\uac15 | 1.2363 | SKD12<\/h4>\n\n\n\n

A2 \uacf5\uae30\uacbd\ud654 \uacf5\uad6c\uac15\uc740 \ub192\uc740 \uc778\uc131\uacfc \ub0b4\ub9c8\ubaa8\uc131\uc744 \uacb8\ube44\ud558\uc5ec \uc555\ucd9c \ud380\uce58 \ubc0f \ub2e4\uc774\uc5d0 \uc774\uc0c1\uc801\uc778 \uc18c\uc7ac\uc785\ub2c8\ub2e4. \ub2f4\uae08\uc9c8 \ud6c4 \uacbd\ub3c4\ub294 \uc77c\ubc18\uc801\uc73c\ub85c 56~58 HRC\uc774\uba70, \uacbd\ud654\uc131\uc774 \uc6b0\uc218\ud558\uace0 \ubcc0\ud615\ub960\uc774 \ub9e4\uc6b0 \ub0ae\uc2b5\ub2c8\ub2e4. D2 \uac15\uc774 \ucde8\uc131 \ud30c\uad34\ub97c \ubcf4\uc77c \ub54c A2\ub294 \ud0c1\uc6d4\ud55c \ub300\uc548\uc774 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. A2\ub294 \ub9e4\uc6b0 \ub192\uc740 \uc555\ucd95 \uc751\ub825\uc744 \uacac\ub51c \ubfd0\ub9cc \uc544\ub2c8\ub77c \uac15\ud55c \ucda9\uaca9 \ud558\uc911\uc5d0\uc11c\ub3c4 \ud30c\uc190\uc744 \ud6a8\uacfc\uc801\uc73c\ub85c \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\n
A2\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694<\/a><\/div>\n\n\n\n
\uc9c0\uae08 \ubc14\ub85c \ubb38\uc758\ud558\uc138\uc694<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
\n
\"o1<\/figure>
\n

O1 \ub0c9\uac04 \uac00\uacf5 \uacf5\uad6c\uac15 | 1.2510 | SKS3<\/h4>\n\n\n\n

O1 \uc624\uc77c \uacbd\ud654 \uacf5\uad6c\uac15\uc740 \uc18c\ub7c9 \uc0dd\uc0b0 \ub0c9\uac04 \uc555\ucd9c \uae08\ud615\uc5d0 \uacbd\uc81c\uc801\uc778 \uc194\ub8e8\uc158\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4. 58~62 HRC\uc758 \uacbd\ub3c4\ub97c \uc9c0\ub2cc \uc774 \uc18c\uc7ac\ub294 \ub0b4\ub9c8\ubaa8\uc131\uacfc \uc778\uc131\uc774 \uade0\ud615 \uc788\uac8c \uac16\ucdb0\uc838 \uc788\uc5b4 \ud380\uce58 \ubc0f \ub2e4\uc774 \ubc29\uc2dd\uc758 \uc6a9\uae30 \uc81c\uc870\uc5d0 \ub110\ub9ac \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

\n
O1\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694<\/a><\/div>\n\n\n\n
\uc9c0\uae08 \ubc14\ub85c \ubb38\uc758\ud558\uc138\uc694<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n

3. \uace0\uc628 \uc791\uc5c5\uc6a9 \uacf5\uad6c\uac15(H \uc2dc\ub9ac\uc988)<\/h3>\n\n\n\n

\ub0c9\uac04 \uc555\ucd9c \uae08\ud615 \uc81c\uc791\uc5d0 \uc788\uc5b4 \uacbd\ub3c4\ub294 \ub9e4\uc6b0 \uc911\uc694\ud558\uc9c0\ub9cc \uc720\uc77c\ud55c \uc694\uc18c\ub294 \uc544\ub2d9\ub2c8\ub2e4. \uae08\ud615\uc774 \uadf9\ub3c4\ub85c \ubcf5\uc7a1\ud55c \uc751\ub825 \ud658\uacbd\uc5d0 \ub178\ucd9c\ub418\uac70\ub098 \uace0\uac15\ub3c4 \uac15\uc7ac\ub97c \uc555\ucd9c\ud558\ub294 \uacbd\uc6b0, \uc9c0\ub098\uce58\uac8c \ub192\uc740 \uacbd\ub3c4\ub294 \uc624\ud788\ub824 \uc21c\uac04\uc801\uc778 \ucde8\uc131 \ud30c\uad34\ub97c \ucd08\ub798\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uacbd\uc6b0\uc5d0\ub294 \ub2e4\ub978 \uc7ac\ub8cc \uc120\ud0dd \uc804\ub7b5\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \uc555\ucd95 \uac15\ub3c4\ub97c \ub2e4\uc18c \ud76c\uc0dd\ud558\uba74\uc11c \ud544\uc694\ud55c \ud30c\uad34 \uc800\ud56d\uc131\uc744 \ud655\ubcf4\ud558\uae30 \uc704\ud574 H11 \ub610\ub294 H13 \uac15\uc7ac \uc0ac\uc6a9\uc744 \uac15\ub825\ud788 \uad8c\uc7a5\ud569\ub2c8\ub2e4. \uc774 \uac15\uc7ac\ub4e4\uc740 \uc720\ub9ac\ucc98\ub7fc \uc0b0\uc0b0\uc870\uac01 \ub098\ub294 \ub300\uc2e0 \uc2a4\ud504\ub9c1\ucc98\ub7fc \ucda9\uaca9 \uc5d0\ub108\uc9c0\ub97c \ud761\uc218\ud569\ub2c8\ub2e4. H11\/H13\uacfc \uac19\uc740 \uc911\ud0c4\uc18c \uc5f4\uac04 \uac00\uacf5 \uacf5\uad6c\uac15\uc740 \uc778\uc131 \ub4f1\uae09 9\ub97c \ub2ec\uc131\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

H11\/H13\uc740 \ub610 \ub2e4\ub978 \uc6a9\ub3c4\ub85c\ub3c4 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uae08\ud615 \ub0b4\uc5d0\uc11c \uace0\uac00\uc758 \ucd08\uacbd\ud569\uae08\uc774\ub098 \uace0\uacbd\ub3c4 \uacf5\uad6c\uac15 \uc778\uc11c\ud2b8\uac00 \ud30c\uc190\ub418\ub294 \uac83\uc744 \ubc29\uc9c0\ud558\uae30 \uc704\ud574 H11 \ub610\ub294 H13(1.2344) \uc7ac\uc9c8\uc758 "\uc218\ucd95 \ub9c1"\uc744 \ud558\ub098 \uc774\uc0c1 \uc778\uc11c\ud2b8 \uc678\ubd80\uc5d0 \uc7a5\ucc29\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uad6c\uc131\uc744 \uc608\uc751\ub825 \ubcf5\ud569 \uae08\ud615\uc774\ub77c\uace0 \ud569\ub2c8\ub2e4. \uc5f4\ud33d\ucc3d \ubc0f \uc218\ucd95\uc744 \uc774\uc6a9\ud558\uc5ec H11\/H13 \ub9c1\uc744 \uac00\uc5f4\ud55c \ud6c4 \uc778\uc11c\ud2b8\uc5d0 \uc7a5\ucc29\ud569\ub2c8\ub2e4. \ub0c9\uac01 \uc2dc \uc0c1\ub2f9\ud55c \ub0b4\ubd80 \uc608\uc751\ub825\uc774 \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uc774 \ud798\uc740 \ub0c9\uac04 \uc555\ucd9c \uc911 \ubc1c\uc0dd\ud558\ub294 \uc678\ubd80 \uc778\uc7a5 \uc751\ub825\uc744 \uc0c1\uc1c4\ud558\uc5ec \uc778\uc11c\ud2b8\uc758 \uade0\uc5f4\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc6a9\ub3c4\uc5d0\uc11c H11\/H13\uc740 \ub9e4\uc6b0 \ub192\uc740 \uacbd\ub3c4\uac00 \ud544\uc694\ud558\uc9c0 \uc54a\uc73c\uba70, \uc77c\ubc18\uc801\uc73c\ub85c 46~48 HRC\ub85c \uc5f4\ucc98\ub9ac\ud558\uba74 \ucda9\ubd84\ud569\ub2c8\ub2e4. \uc774 \uacbd\ub3c4 \ubc94\uc704\ub294 \ub6f0\uc5b4\ub09c \uc778\uc131\uacfc \uad6c\uc870\uc801 \uc548\uc815\uc131\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\n
\"H11<\/figure>
\n

H11 \uacf5\uad6c\uac15 | 1.2343 | SKD6<\/h4>\n\n\n\n

H11 \ud06c\ub86c \uc5f4\uac04 \uac00\uacf5\uac15\uc740 \ub0c9\uac04 \uc555\ucd9c \uae08\ud615\uc5d0 \ud544\uc218\uc801\uc778 \ubcf4\uc644 \uc18c\uc7ac\ub85c, \ub192\uc740 \uc778\uc131 \ub355\ubd84\uc5d0 \uae08\ud615\uc758 \uac11\uc791\uc2a4\ub7ec\uc6b4 \ucde8\uc131 \ud30c\uad34\ub97c \ud6a8\uacfc\uc801\uc73c\ub85c \ubc29\uc9c0\ud569\ub2c8\ub2e4. \uc774 \uac15\uc885\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \uc218\ucd95 \ub9c1\uacfc \uae08\ud615 \ud504\ub808\uc784 \uc81c\uc870\uc5d0 \uc0ac\uc6a9\ub418\uba70, \uacbd\ub3c4\ub294 46~52 HRC\uc785\ub2c8\ub2e4. \ub192\uc740 \uc5f0\uc131\uc73c\ub85c \uc778\ud574 \uc5c4\uccad\ub09c \ud30c\uc5f4 \uc555\ub825\uc744 \uacac\ub51c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub6f0\uc5b4\ub09c \ucda9\uaca9 \uc800\ud56d\uc131\uc774 \uc694\uad6c\ub418\ub294 \uace0\uc751\ub825 \ubd80\ud488\uc5d0\uc11c H11\uc740 \uace0\uacbd\ub3c4 \uc18c\uc7ac\uc5d0 \ub0b4\uc7ac\ub41c \ucde8\uc131\uc744 \uadf9\ubcf5\ud558\uc5ec \ud234\ub9c1\uc758 \uc804\ubc18\uc801\uc778 \uad6c\uc870\uc801 \ubb34\uacb0\uc131\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\n
H11\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694<\/a><\/div>\n\n\n\n
\uc9c0\uae08 \ubc14\ub85c \ubb38\uc758\ud558\uc138\uc694<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n
\n
\"H13<\/figure>
\n

H13 \uacf5\uad6c\uac15 | 1.2344 | SKD61<\/h4>\n\n\n\n

H13 \uacf5\uad6c\uac15\uc740 \ub192\uc740 \uc778\uc131\uacfc \uc5f0\uc131\uc744 \uc81c\uacf5\ud558\uc5ec \uc218\ucd95 \ub9c1 \ubc0f \ud558\uc6b0\uc9d5 \uc81c\uc870\uc5d0 \uc774\uc0c1\uc801\uc778 \uc18c\uc7ac\uc785\ub2c8\ub2e4. 44~48 HRC\ub85c \uc5f4\ucc98\ub9ac\ud558\uba74 \ub192\uc740 \ucda9\uaca9 \ud558\uc911 \ud558\uc5d0\uc11c\ub3c4 \uade0\uc5f4 \uc804\ud30c\ub97c \ud6a8\uacfc\uc801\uc73c\ub85c \uc5b5\uc81c\ud569\ub2c8\ub2e4. H13\uc740 \uc6b0\uc218\ud55c \uc2ec\ubd80 \uacbd\ud654\uc131\uc744 \ubcf4\uc774\uba70, \uadf9\ud55c\uc758 \ud30c\uc5f4 \uc751\ub825 \ud558\uc5d0\uc11c\ub3c4 \uc7a5\uae30\uac04\uc5d0 \uac78\uccd0 \uc815\ubc00\ud55c \uce58\uc218 \uacf5\ucc28\ub97c \uc720\uc9c0\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\n
H13\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubcf4\uc138\uc694<\/a><\/div>\n\n\n\n
\uc9c0\uae08 \ubc14\ub85c \ubb38\uc758\ud558\uc138\uc694<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n\n\n

 \uc5f4\ucc98\ub9ac \ubc0f \ud45c\uba74 \uac15\ud654<\/h2>\n\n\n\n

\uace0\uac1d \uc5ec\ub7ec\ubd84\uaed8\uc11c\ub294 \uacf5\uc7a5 \uac80\uc0ac \uc2dc\uc5d0\ub294 \uacbd\ub3c4 \uc2dc\ud5d8\uc744 \ud1b5\uacfc\ud588\uc9c0\ub9cc, \uae30\uacc4 \uac00\ub3d9 \uc2dc\uc791 \uc9c1\ud6c4 \uac11\uc790\uae30 \uade0\uc5f4\uc774 \ubc1c\uc0dd\ud558\ub294 \uc0c1\ud669\uc744 \uacbd\ud5d8\ud558\uc168\uc2b5\ub2c8\ub2e4. \uc774\ub294 \uc794\ub958 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \ub54c\ubb38\uc77c \uac00\ub2a5\uc131\uc774 \ub192\uc2b5\ub2c8\ub2e4. \ub2f4\uae08\uc9c8 \uacfc\uc815\uc5d0\uc11c \uac15\uc7ac\uc758 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uac00 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub85c \uc644\uc804\ud788 \ubcc0\ud0dc\ub418\uc9c0 \uc54a\uc73c\uba74 \uc794\ub958 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uac00 \ub0a8\uac8c \ub429\ub2c8\ub2e4. \uc774 \uc794\ub958 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ub294 \ubd88\uc548\uc815\ud558\uc5ec \uae08\ud615 \uc0ac\uc6a9 \uc911, \ud2b9\ud788 \uace0\uc751\ub825\uc774\ub098 \uace0\uc18d \ucda9\uaca9 \uc870\uac74\uc5d0\uc11c \uc790\ubc1c\uc801\uc73c\ub85c \ucde8\uc131 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub85c \ubcc0\ud0dc\ub429\ub2c8\ub2e4. \uc774 \ubcc0\ud0dc \uacfc\uc815\uc5d0\uc11c \ubd80\ud53c \ud33d\ucc3d\uc774 \ubc1c\uc0dd\ud558\uc5ec \uae08\ud615 \ub0b4\ubd80\uc5d0 \ub9c9\ub300\ud55c \uc751\ub825\uc774 \ubc1c\uc0dd\ud558\uace0, \uacb0\uad6d \ud53c\ub85c \ud30c\uad34\ub85c \uc774\uc5b4\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub0c9\uac04 \uc555\ucd9c \ub2e4\uc774\uc640 \uac19\uc740 \uace0\uc751\ub825 \ud658\uacbd\uc5d0\uc11c\ub294 \ube44\uc6a9 \uc808\uac10\uc744 \uc704\ud574 \ud15c\ud37c\ub9c1 \uc0ac\uc774\ud074\uc744 \ud55c\ub450 \ubc88\ub9cc \uc218\ud589\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4. \uc5c5\uacc4 \ud45c\uc900\uc740 3\ud68c \ud15c\ud37c\ub9c1\uc785\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uc794\ub958 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \ub300\ubd80\ubd84\uc774 \uc131\uacf5\uc801\uc73c\ub85c \ubcc0\ud0dc\ub418\uc5b4 \ub2e4\uc774 \ub0b4\ubd80\uc758 \ubd88\uc548\uc815\uc131\uc744 \uc81c\uac70\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uae30\ubcf8 \uc7ac\ub8cc\uac00 \ucda9\ubd84\ud55c \uac15\ub3c4\uc640 \uc778\uc131\uc744 \ud655\ubcf4\ud55c \ud6c4\uc5d0\ub294 \uadf9\ud55c\uc758 \ub9c8\ubaa8\ub97c \uacac\ub51c \uc218 \uc788\ub3c4\ub85d \uae08\ud615\uc5d0 \ubcf4\ud638\uce35\uc744 \ub3c4\ud3ec\ud574\uc57c \ud569\ub2c8\ub2e4. \uc9c8\ud654 \ucc98\ub9ac\ub294 \uac00\uc7a5 \uc77c\ubc18\uc801\uc778 \ud45c\uba74 \uacbd\ud654 \ubc29\ubc95\uc785\ub2c8\ub2e4. \uc774 \uacf5\uc815\uc744 \ud1b5\ud574 \uae08\ud615 \ud45c\uba74\uc5d0 \ub9e4\uc6b0 \ub2e8\ub2e8\ud55c \ud654\ud569\ubb3c \uce35\uc774 \ud615\uc131\ub418\uc5b4 \ub0b4\ub9c8\ubaa8\uc131\uc774 \ub354\uc6b1 \ud5a5\uc0c1\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub3c4\uad6c \uad6c\uc131 \uc694\uc18c<\/td>\uad8c\uc7a5 \uac15\uc885 (\uc120\ud0dd \uc608\uc2dc)<\/td>\uc791\uc5c5\uacbd\ub3c4(HRC)<\/td>\ud575\uc2ec \uc18d\uc131 \uac15\uc870<\/td>\uc9c0\uc6d0 \uad6c\uc131 \uc694\uc18c<\/td><\/tr>
\ud380\uce58<\/td>T15, M4, D4, M2<\/td>60\u201366<\/td>\ub192\uc740 \uc555\ucd95 \uac15\ub3c4\/\ub0b4\ub9c8\ubaa8\uc131<\/td>\ud380\uce58 \uc0dd\ud06c: A2, O1, S7 (56\u201358 HRC)<\/td><\/tr>
\ub2e4\uc774 \uc778\uc11c\ud2b8<\/td>T15, M4, D4, M2, D2, \uce74\ubc14\uc774\ub4dc<\/td>58\u201366+<\/td>\ub192\uc740 \uacbd\ub3c4\/\ub0b4\ub9c8\ubaa8\uc131<\/td>\ub2e4\uc774 \ud640\ub354\/\ub9ac\ud14c\uc774\ub108 \ub9c1: H11, H13 (46\u201348 HRC)<\/td><\/tr>
\uadf9\ub3c4\ub85c \uc5b4\ub824\uc6b4 \uc555\ucd9c<\/td>H11\/H13 \ub610\ub294 \ud145\uc2a4\ud150 \uce74\ubc14\uc774\ub4dc<\/td>46\u201362+<\/td>\uade0\uc5f4\uc5d0 \uc800\ud56d\ud558\ub294 \uac15\ub3c4<\/td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n\n\n\n
\ub0c9\uac04 \uc555\ucd9c \uae08\ud615\uac15\uc5d0 \ud544\uc694\ud55c \ud2b9\uc131\uc740 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/strong>

\uacf5\uad6c\uac15 \ubc0f \uae08\ud615\uac15\uc740 \uadf9\ud55c\uc758 \uc555\ucd95 \uc751\ub825\uacfc \ub3d9\uc801 \ud53c\ub85c \ud558\uc911\uc744 \uacac\ub514\uae30 \uc704\ud574 \ub192\uc740 \uacbd\ub3c4\uc640 \ub192\uc740 \uc778\uc131\uc744 \uade0\ud615 \uc788\uac8c \uac16\ucdb0\uc57c \ud569\ub2c8\ub2e4. \ub610\ud55c, \uac00\uacf5 \uacfc\uc815\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294 \uc2ec\ud55c \ub9c8\ubaa8\ub97c \uacac\ub51c \uc218 \uc788\ub3c4\ub85d \ub192\uc740 \ub0b4\ub9c8\ubaa8\uc131\ub3c4 \uc694\uad6c\ub429\ub2c8\ub2e4.<\/p> <\/div>

\ub0c9\uac04 \uc555\ucd9c \ud380\uce58\uc5d0 \uac00\uc7a5 \uc801\ud569\ud55c \uac15\uc7ac\ub294 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/strong>

M2 \uace0\uc18d\uac15\uc740 \ud380\uce58 \uc81c\uc791\uc5d0 \uc788\uc5b4 \ud45c\uc900\uc801\uc778 \uc18c\uc7ac\ub85c, \ub0b4\ub9c8\ubaa8\uc131\uacfc \uc778\uc131\uc774 \uade0\ud615 \uc788\uac8c \uac16\ucdb0\uc838 \uc788\uc2b5\ub2c8\ub2e4. 62~64 HRC\ub85c \uc5f4\ucc98\ub9ac\ub41c M2\ub294 2068 MPa \uc774\uc0c1\uc758 \ud0c1\uc6d4\ud55c \uc555\ucd95 \uac15\ub3c4\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p> <\/div>

\uae08\ud615 \uc81c\uc791 \uc2dc A2\uac15\uacfc D2\uac15 \uc911 \uc5b4\ub5a4 \uac15\uc744 \uc120\ud0dd\ud574\uc57c \ud560\uae4c\uc694?<\/strong>

D2 \uae08\ud615 \uc0ac\uc6a9 \uc911 \ud30c\uc190\uc774\ub098 \ucde8\uc131 \ud30c\uad34\uac00 \ubc1c\uc0dd\ud560 \uacbd\uc6b0 AISI A2(1.2363)\ub97c \uc120\ud0dd\ud558\uc2ed\uc2dc\uc624. A2\ub294 D2\uc5d0 \ube44\ud574 \uc6b0\uc218\ud55c \ucda9\uaca9 \uc800\ud56d\uc131\uacfc \uc778\uc131\uc744 \uc81c\uacf5\ud558\uba70, \ub0c9\uac04 \uc131\ud615 \uc2dc \uc6b0\uc218\ud55c \ub0b4\ub9c8\ubaa8\uc131\uc744 \uc720\uc9c0\ud569\ub2c8\ub2e4.<\/p> <\/div>

\ub2e4\uc774 \uc218\ucd95 \ub9c1\uc5d0\ub294 \uc5b4\ub5a4 \uc885\ub958\uc758 \uac15\ucca0\uc774 \uc0ac\uc6a9\ub418\ub098\uc694?<\/strong>

\uc218\ucd95 \ub9c1\uc5d0\ub294 \uc778\uc11c\ud2b8 \uade0\uc5f4 \ubc29\uc9c0\ub97c \uc704\ud574 H11 \ub610\ub294 H13 \uc5f4\uac04 \uac00\uacf5 \uacf5\uad6c\uac15\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc7ac\uc9c8\uc740 \uc2a4\ud504\ub9c1\ucc98\ub7fc \ucda9\uaca9 \uc5d0\ub108\uc9c0\ub97c \ud761\uc218\ud558\uace0 \uc555\ucd9c \uc2dc \ubc1c\uc0dd\ud558\ub294 \uc778\uc7a5 \uc751\ub825\uc5d0 \ub300\uc751\ud558\uae30 \uc704\ud574 \uc548\ucabd\uc73c\ub85c \uc608\uc751\ub825\uc744 \ubc1c\uc0dd\uc2dc\ud0b5\ub2c8\ub2e4.<\/p> <\/div>

\ub0c9\uac04 \uc555\ucd9c \ub2e4\uc774\uc5d0\uc11c \uc555\ucd95 \uac15\ub3c4\uac00 \uc911\uc694\ud55c \uc774\uc720\ub294 \ubb34\uc5c7\uc785\ub2c8\uae4c?<\/strong>

\uae08\ud615\uc740 \ucd5c\ub300 2415MPa(350ksi)\uc758 \uc555\ub825\uc744 \uacac\ub38c\uc57c \ud558\ubbc0\ub85c \uc555\ucd95 \uac15\ub3c4\uac00 \uac00\uc7a5 \uc911\uc694\ud55c \uace0\ub824 \uc0ac\ud56d\uc785\ub2c8\ub2e4. \ub192\uc740 \uc555\ucd95 \uac15\ub3c4\ub294 \uae08\ud615\uc774 \uc774\ub7ec\ud55c \uc5c4\uccad\ub09c \ud798\uc5d0\ub3c4 \uc18c\uc131 \ubcc0\ud615\ub418\uac70\ub098 \ud30c\uc190\ub418\uc9c0 \uc54a\ub3c4\ub85d \ubcf4\uc7a5\ud569\ub2c8\ub2e4.<\/p> <\/div>

\uc555\ucd9c \ub2e4\uc774\uc5d0 \ud544\uc694\ud55c \ud15c\ud37c\ub9c1 \uc0ac\uc774\ud074\uc740 \uba87 \ud68c\uc785\ub2c8\uae4c?<\/strong>

\uc5c5\uacc4 \ud45c\uc900\uc5d0\uc11c\ub294 \ub0c9\uac04 \uc555\ucd9c\uacfc \uac19\uc740 \uace0\uc751\ub825 \uc801\uc6a9 \ubd84\uc57c\uc5d0 3\uc911 \ud15c\ud37c\ub9c1\uc744 \uad8c\uc7a5\ud569\ub2c8\ub2e4. \uc774\ub294 \uc794\ub958 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uac00 \uc644\uc804\ud788 \ubcc0\ud0dc\ub418\uc5b4 \ud53c\ub85c \ud30c\uad34\ub97c \uc720\ubc1c\ud558\ub294 \ub0b4\ubd80 \ubd88\uc548\uc815\uc131\uc744 \uc81c\uac70\ud569\ub2c8\ub2e4.<\/p> <\/div>

\ub0c9\uac04 \uc555\ucd9c\uc5d0 \uc801\ud569\ud55c \uc800\ub834\ud55c \uacf5\uad6c\uac15\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/strong>

AISI O1\uc740 \uc18c\ub7c9 \uc0dd\uc0b0 \uae08\ud615\uc774\ub098 \ub192\uc740 \uc778\uc131\uc774 \uc694\uad6c\ub418\ub294 \uc6a9\ub3c4\uc5d0 \uc801\ud569\ud55c \uacbd\uc81c\uc801\uc778 \uc624\uc77c \uacbd\ud654\uac15\uc785\ub2c8\ub2e4. \ub0b4\ub9c8\ubaa8\uc131\uc740 D2\ubcf4\ub2e4 \ub0ae\uc9c0\ub9cc, \uae08\ud615 \ud30c\uc190\uc774 \uc8fc\ub41c \uc6d0\uc778\uc778 \uacbd\uc6b0\uc5d0\ub294 O1\uc774 \ud0c1\uc6d4\ud55c \uc120\ud0dd\uc785\ub2c8\ub2e4.<\/p> <\/div> <\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

In modern manufacturing, cold extrusion is a core process for mass-producing precision components across the automotive, aerospace, and industrial machinery sectors. The service life of cold extrusion dies often directly determines a company’s profitability. Selecting the most suitable tool steel for punches and dies represents a strategic decision critical to cost-effectiveness. Cold extrusion, also known […]<\/p>\n","protected":false},"author":1,"featured_media":4355,"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-9555","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nCold Extrusion Die Steel Selection Guide | D2, A2, H13, M2 Explained<\/title>\n<meta name=\"description\" content=\"A practical guide for selecting tool steel in cold extrusion applications. Understand performance differences between D2, A2, H13, M2 and choose the right grade for die life and cost control.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aobosteel.com\/ko\/selection-of-steels-for-cold-extrusion\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cold Extrusion Die Steel Selection Guide | D2, A2, H13, M2 Explained\" \/>\n<meta property=\"og:description\" content=\"A practical guide for selecting tool steel in cold extrusion applications. Understand performance differences between D2, A2, H13, M2 and choose the right grade for die life and cost control.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aobosteel.com\/ko\/selection-of-steels-for-cold-extrusion\/\" \/>\n<meta property=\"og:site_name\" content=\"AoboSteel\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/profile.php?id=61565368220197\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-24T03:31:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/H11-tool-steel-png.avif\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\uc608\uc0c1 \ub418\ub294 \ud310\ub3c5 \uc2dc\uac04\" \/>\n\t<meta name=\"twitter:data1\" content=\"11\ubd84\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"TechArticle\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/\"},\"author\":{\"name\":\"Evan\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#\\\/schema\\\/person\\\/96118415c30ca6bb52eaf1127b052ef7\"},\"headline\":\"Cold Extrusion Die Steel Selection Guide | D2, A2, H13, M2 Explained\",\"datePublished\":\"2025-08-05T07:18:22+00:00\",\"dateModified\":\"2026-07-24T03:31:22+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/\"},\"wordCount\":1905,\"publisher\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/aobosteel.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/H11-tool-steel-png.avif\",\"inLanguage\":\"ko-KR\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/\",\"url\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/\",\"name\":\"Cold Extrusion Die Steel Selection Guide | D2, A2, H13, M2 Explained\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/aobosteel.com\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/H11-tool-steel-png.avif\",\"datePublished\":\"2025-08-05T07:18:22+00:00\",\"dateModified\":\"2026-07-24T03:31:22+00:00\",\"description\":\"A practical guide for selecting tool steel in cold extrusion applications. 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They also require high wear resistance to endure severe abrasive wear during the process.\",\"inLanguage\":\"ko-KR\"},\"inLanguage\":\"ko-KR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/#faq-question-1766632177144\",\"position\":2,\"url\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/#faq-question-1766632177144\",\"name\":\"What is the best steel for cold extrusion punches?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"M2 high-speed steel is the standard choice for punches, offering a balance of wear resistance and toughness. When heat-treated to 62-64 HRC, M2 provides exceptional compressive strength of 2068 MPa or more.\",\"inLanguage\":\"ko-KR\"},\"inLanguage\":\"ko-KR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/#faq-question-1766632178133\",\"position\":3,\"url\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/#faq-question-1766632178133\",\"name\":\"When should I choose A2 steel over D2 for dies?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Select AISI A2 (1.2363) when D2 dies exhibit chipping or brittle fracture during use. A2 offers superior impact resistance and toughness compared to D2, while maintaining good wear resistance for cold forming.\",\"inLanguage\":\"ko-KR\"},\"inLanguage\":\"ko-KR\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/#faq-question-1766632179323\",\"position\":4,\"url\":\"https:\\\/\\\/aobosteel.com\\\/selection-of-steels-for-cold-extrusion\\\/#faq-question-1766632179323\",\"name\":\"What steel is used for die shrink rings?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"H11 or H13 hot work tool steels are recommended for shrink rings to prevent insert cracking. 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They also require high wear resistance to endure severe abrasive wear during the process.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632177144","position":2,"url":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632177144","name":"\ub0c9\uac04 \uc555\ucd9c \ud380\uce58\uc5d0 \uac00\uc7a5 \uc801\ud569\ud55c \uac15\uc7ac\ub294 \ubb34\uc5c7\uc785\ub2c8\uae4c?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"M2 high-speed steel is the standard choice for punches, offering a balance of wear resistance and toughness. When heat-treated to 62-64 HRC, M2 provides exceptional compressive strength of 2068 MPa or more.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632178133","position":3,"url":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632178133","name":"\uae08\ud615 \uc81c\uc791 \uc2dc A2\uac15\uacfc D2\uac15 \uc911 \uc5b4\ub5a4 \uac15\uc744 \uc120\ud0dd\ud574\uc57c \ud560\uae4c\uc694?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Select AISI A2 (1.2363) when D2 dies exhibit chipping or brittle fracture during use. A2 offers superior impact resistance and toughness compared to D2, while maintaining good wear resistance for cold forming.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632179323","position":4,"url":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632179323","name":"\ub2e4\uc774 \uc218\ucd95 \ub9c1\uc5d0\ub294 \uc5b4\ub5a4 \uc885\ub958\uc758 \uac15\ucca0\uc774 \uc0ac\uc6a9\ub418\ub098\uc694?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"H11 or H13 hot work tool steels are recommended for shrink rings to prevent insert cracking. These materials absorb impact energy like springs and create inward pre-stress to counteract tensile stress during extrusion.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632221846","position":5,"url":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632221846","name":"\ub0c9\uac04 \uc555\ucd9c \ub2e4\uc774\uc5d0\uc11c \uc555\ucd95 \uac15\ub3c4\uac00 \uc911\uc694\ud55c \uc774\uc720\ub294 \ubb34\uc5c7\uc785\ub2c8\uae4c?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Compressive strength is the primary consideration, as dies must withstand peak pressures of 2415 MPa (350 ksi). High compressive strength ensures the die does not undergo plastic deformation or collapse under this immense counterforce.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632224634","position":6,"url":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632224634","name":"\uc555\ucd9c \ub2e4\uc774\uc5d0 \ud544\uc694\ud55c \ud15c\ud37c\ub9c1 \uc0ac\uc774\ud074\uc740 \uba87 \ud68c\uc785\ub2c8\uae4c?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Industry standards recommend triple tempering for high-stress applications like cold extrusion. This ensures retained austenite is fully transformed, eliminating internal instability that causes fatigue fracture.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632225794","position":7,"url":"https:\/\/aobosteel.com\/selection-of-steels-for-cold-extrusion\/#faq-question-1766632225794","name":"\ub0c9\uac04 \uc555\ucd9c\uc5d0 \uc801\ud569\ud55c \uc800\ub834\ud55c \uacf5\uad6c\uac15\uc740 \ubb34\uc5c7\uc778\uac00\uc694?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"AISI O1 is a cost-effective oil-hardening steel ideal for small-batch dies or applications requiring high toughness. While its wear resistance is lower than that of D2, O1 is excellent if dies primarily fail by fracture.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"}]}},"uagb_featured_image_src":{"full":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/H11-tool-steel-png.avif",1000,1000,false],"thumbnail":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/H11-tool-steel-150x150.avif",150,150,true],"medium":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/H11-tool-steel-300x300.avif",300,300,true],"medium_large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/H11-tool-steel-768x768.avif",768,768,true],"large":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/H11-tool-steel-png.avif",1000,1000,false],"1536x1536":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/H11-tool-steel-png.avif",1000,1000,false],"2048x2048":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/H11-tool-steel-png.avif",1000,1000,false],"trp-custom-language-flag":["https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/03\/H11-tool-steel-12x12.avif",12,12,true]},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/ko\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"In modern manufacturing, cold extrusion is a core process for mass-producing precision components across the automotive, aerospace, and industrial machinery sectors. 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