{"id":21502,"date":"2026-10-09T20:56:40","date_gmt":"2026-10-09T12:56:40","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=21502"},"modified":"2026-10-16T02:28:15","modified_gmt":"2026-10-15T18:28:15","slug":"grain-boundary-carbide-embrittlement-tool-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/grain-boundary-carbide-embrittlement-tool-steel\/","title":{"rendered":"\uacf5\uad6c\uac15\uc758 \uc11c\ub0c9\uacfc \uc785\uacc4 \ud0c4\ud654\ubb3c \ucde8\ud654"},"content":{"rendered":"

\uacf5\uad6c\uac15\uc758 \uc11c\ub0c9\uacfc \uc785\uacc4 \ud0c4\ud654\ubb3c \ucde8\ud654<\/h1>\n\n\n\n

\uacf5\uad6c\uac15\uc740 \uc791\uc5c5 \uacbd\ub3c4\uc5d0 \uc27d\uac8c \ub3c4\ub2ec\ud55c\ub2e4. \uacf5\uad6c\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uac15\uc885\uc740 \uacbd\ud654\ub2a5\uc774 \ub192\uc544 \ub2f4\uae08\uc9c8 \uacf5\uc815\uc774 \ubd88\ub7c9\ud558\ub354\ub77c\ub3c4 \ub113\uc740 \ub0c9\uac01 \uc18d\ub3c4 \ubc94\uc704\uc5d0\uc11c \ub2f4\uae08\uc9c8 \uc0c1\ud0dc\uc758 \uacbd\ub3c4\ub97c \uc5bb\uc744 \uc218 \uc788\ub2e4. \ubd88\ub7c9\ud55c \uacf5\uc815\uc774 \ucd08\ub798\ud558\ub294 \ube44\uc6a9\uc740 \uc778\uc131\uc774\uba70, \uadf8 \uc190\uc2e4\uc740 \uad6c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uc785\uacc4\uc5d0 \uae30\ub85d\ub41c\ub2e4. \ub290\ub9b0 \ub2f4\uae08\uc9c8\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc911\uc5d0 \uc6a9\ud574\ub41c \ud569\uae08 \ud0c4\ud654\ubb3c\uc774 \ub2e4\uc2dc \uc785\uacc4 \uc0ac\uc774\uc5d0 \ub9c9\uc73c\ub85c \uc11d\ucd9c\ud560 \uc2dc\uac04\uc744 \uc8fc\uba70, \ubcc0\ud0dc \uc0dd\uc131\ubb3c\uc744 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\uc5d0\uc11c \ubca0\uc774\ub098\uc774\ud2b8\ub85c \ubcc0\ud654\uc2dc\ud0a8\ub2e4. \ub450 \ud6a8\uacfc \ubaa8\ub450 \uacf5\uad6c\ub97c \ucde8\ud654\uc2dc\ud0a4\uba70, \ub2e8\uba74\uc774 \ucee4\uc9c8\uc218\ub85d \uc545\ud654\ub41c\ub2e4. \uc774 \ud398\uc774\uc9c0\uc5d0\uc11c\ub294 \ud0c4\ud654\ubb3c \ub9c9\uc774 \ubb34\uc5c7\uc778\uc9c0, \ub2e8\uba74 \ud06c\uae30\uc640 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uac00 \uadf8 \ud615\uc131\ub7c9\uc744 \uc5b4\ub5bb\uac8c \uacb0\uc815\ud558\ub294\uc9c0, \uadf8\ub9ac\uace0 \ucd9c\ucc98\uac00 \uc2e4\uc81c \uac15\uc885\uc5d0\uc11c \uce21\uc815\ud55c \ub0b4\uc6a9\uc744 \uc124\uba85\ud55c\ub2e4.<\/p>\n\n\n\n

\uacbd\ub3c4\ub9cc\uc73c\ub85c\ub294 \ub2f4\uae08\uc9c8\uc774 \uc62c\ubc14\ub974\uac8c \uc774\ub8e8\uc5b4\uc84c\uc74c\uc744 \uc99d\uba85\ud560 \uc218 \uc5c6\ub2e4<\/h2>\n\n\n\n

\uacf5\uad6c\uac15\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \uacbd\ud654\ub2a5\uc774 \ub192\ub2e4. \ubd80\uc801\uc808\ud55c \uc808\ucc28\uac00 \uc801\uc6a9\ub418\ub354\ub77c\ub3c4 \ub2f4\uae08\uc9c8 \uc0c1\ud0dc\uc758 \uacbd\ub3c4\uc5d0 \ub3c4\ub2ec\ud558\uba70, 500 HV(\uc57d 49 HRC) \uc774\uc0c1\uc758 \uacbd\ub3c4\uac00 \uc5f0\uc18d \ub0c9\uac01 \ubcc0\ud0dc \uace1\uc120\uc758 \ub113\uc740 \ubc94\uc704\uc5d0\uc11c \uc5bb\uc5b4\uc9c0\uba70, \uc77c\ubd80 \uac15\uc885\uc740 \uacf5\ub7ad\ub3c4 \ud3ec\ud568\ub41c\ub2e4. \uacbd\ub3c4\ub294 \ud544\uc694\ud558\uc9c0\ub9cc \uacf5\uad6c\uac00 \uc694\uad6c\ud558\ub294 \uc131\ub2a5\uc744 \uc704\ud574\uc11c\ub294 \ucda9\ubd84\ud558\uc9c0 \uc54a\ub2e4. \ucd9c\ucc98\ub294 \uc774 \uc810\uc744 \uc9c1\uc811\uc801\uc73c\ub85c \uc5b8\uae09\ud55c\ub2e4. \ub2f4\uae08\uc9c8\uc740 \uc694\uad6c\ub418\ub294 \uae30\uacc4\uc801 \ud2b9\uc131\uc744 \uc0dd\uc131\ud558\ub294 \uacf5\uc815\uc73c\ub85c \ucde8\uae09\ub418\uc5b4\uc57c \ud558\uba70, \ub2e8\uc21c\ud788 \uc9c0\uc815\ub41c \uacbd\ub3c4\uc5d0 \ub3c4\ub2ec\ud558\ub294 \ub2e8\uacc4\ub85c\ub9cc \ucde8\uae09\ub418\uc5b4\uc11c\ub294 \uc548 \ub41c\ub2e4.<\/p>\n\n\n\n

\ub0c9\uac01 \uc911\uc5d0 \ud615\uc131\ub418\ub294 \ud0c4\ud654\ubb3c \ub9c9<\/h2>\n\n\n\n

\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654\ub294 \ud569\uae08 \ud0c4\ud654\ubb3c\uc744 \uc6a9\ud574\uc2dc\ud0a4\uba70, \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uac00 \ub192\uc744\uc218\ub85d \ub354 \ub9ce\uc774 \uc6a9\ud574\ub41c\ub2e4. \ub0c9\uac01 \uc2dc\uc5d0\ub294 \uacfc\uc815\uc774 \uc5ed\uc73c\ub85c \uc9c4\ud589\ub41c\ub2e4. \uc6a9\ud574\ub41c \ud0c4\uc18c\uc640 \ud569\uae08\uc740 \ub2e4\uc2dc \ube60\uc838\ub098\uc640\uc57c \ud558\uba70, \uc5d0\ub108\uc9c0\uac00 \uac00\uc7a5 \ub192\uc740 \uc9c0\uc810\uc778 \uad6c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uc785\uacc4\uc5d0\uc11c \ube60\uc838\ub098\uc628\ub2e4. \uadf8\uacf3\uc5d0 \ud615\uc131\ub418\ub294 \uac83\uc740 \uc785\uacc4 \uc0ac\uc774\uc758 \ud0c4\ud654\ubb3c \ub9c9\uc774\ub2e4. \uc774 \ub9c9\uc740 \uacc4\uba74\uc744 \uc57d\ud654\uc2dc\ud0a4\uba70, \uc57d\ud654\ub41c \uc785\uacc4\ub294 \uade0\uc5f4\uc774 \uc2dc\uc791\ub418\uace0 \uc804\ud30c\ub418\ub294 \uacbd\ub85c\uac00 \ub41c\ub2e4.<\/p>\n\n\n\n

\uc5f0\uc18d \ub0c9\uac01 \ubcc0\ud0dc \uace1\uc120\ub3c4\uc5d0\uc11c \uc11d\ucd9c\uc740 \uc810\uc120\uc73c\ub85c \ud45c\uc2dc\ub418\uba70, \uadf8 \uc120\uc758 \uc704\uce58\uac00 \uc2e4\uc9c8\uc801\uc778 \uacbd\uace0\uc774\ub2e4. \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\ub97c \ub192\uc774\uba74 \uc120\uc774 \uc67c\ucabd\uc73c\ub85c \uc774\ub3d9\ud558\uba70, \uc774\ub294 \uc774\uc804\uc5d0\ub294 \ud68c\ud53c\ud558\uae30\uc5d0 \ucda9\ubd84\ud788 \ube68\ub790\ub358 \ub0c9\uac01 \uc18d\ub3c4\uc5d0\uc11c \ud0c4\ud654\ubb3c \ub9c9\uc774 \ud615\uc131\ub418\uae30 \uc2dc\uc791\ud568\uc744 \uc758\ubbf8\ud55c\ub2e4. \ud558\ub098\uc758 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc870\uac74\uc5d0 \uc801\ud569\ud588\ub358 \ub2f4\uae08\uc9c8\uc774 \ub354 \ub192\uc740 \uc628\ub3c4 \uc870\uac74\uc5d0\ub294 \uc801\ud569\ud558\uc9c0 \uc54a\ub2e4.<\/p>\n\n\n\n

\ud30c\uc190\ub41c \ubd80\ud488\uc5d0\uc11c \uc774 \uc190\uc0c1\uc744 \uc2dd\ubcc4\ud558\ub294 \ub450 \uac00\uc9c0 \ud2b9\uc9d5\uc774 \uc788\ub2e4. \uccab\uc9f8\ub294 \uad6c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uc785\uacc4\uc5d0\uc11c\uc758 \ub9e4\uc6b0 \uac15\ud55c \uc5d0\uce6d\uc73c\ub85c, \ud0c4\ud654\ubb3c\uacfc \uac15 \uc0ac\uc774\uc758 \uacc4\uba74\uc774 \uc8fc\ubcc0 \uae30\uc9c0\ubcf4\ub2e4 \ubd80\uc2dd\ub418\uae30 \uc27d\uae30 \ub54c\ubb38\uc774\ub2e4. \ub458\uc9f8\ub294 \ub354 \uc2ec\ud55c \uacbd\uc6b0\uc5d0 \ub098\ud0c0\ub098\uba70, \ud30c\uad34 \uc790\uccb4\uac00 \uc785\uacc4\ub97c \ub530\ub77c \ubc1c\uc0dd\ud558\uc5ec \uc785\ub0b4\ub97c \ud1b5\ud558\uc9c0 \uc54a\uace0 \uad6c \uc785\uacc4\ub97c \ub530\ub77c \uc9c4\ud589\ub41c\ub2e4.<\/p>\n\n\n\n

\ud604\ubbf8\uacbd \uc544\ub798\uc5d0\uc11c \ud0c4\ud654\ubb3c \ud53c\ub9c9\uc740 \uc774\uc804 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uacb0\uc815\ub9bd\uacc4\ub97c \ub530\ub77c \uc5f0\uc18d\uc801\uc778 \ub124\ud2b8\uc6cc\ud06c\ub85c \ub098\ud0c0\ub09c\ub2e4.<\/p>\n\n\n\n

\"Carbides
\uadf8\ub9bc 7.28. \uce68\ud0c4\ub41c 15CrNi6 \ucf00\uc774\uc2a4\uc758 \uacb0\uc815\ub9bd\uacc4\uc5d0 \uc11d\ucd9c\ub41c \ud0c4\ud654\ubb3c, \uad11\ud559 \ud604\ubbf8\uacbd \uc0ac\uc9c4. \uc774 \ub124\ud2b8\uc6cc\ud06c\ub294 \uc774\uc804 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uacb0\uc815\ub9bd\uacc4\ub97c \ub530\ub77c \ud615\uc131\ub418\uba70, \uc774\ub294 \uc0ac\uc6a9 \uc911 \uade0\uc5f4\uc774 \uc9c4\ud589\ud558\ub294 \uacbd\ub85c\uc774\ub2e4. \uc774 \uc608\ub294 \uacf5\uad6c\uac15\uc774 \uc544\ub2cc \uce68\ud0c4\uac15\uc774\uc9c0\ub9cc, \ud0c4\ud654\ubb3c \uc11d\ucd9c \uc628\ub3c4 \ubc94\uc704\ub97c \ub108\ubb34 \ub290\ub9ac\uac8c \ub0c9\uac01\ud55c \uacf5\uad6c\uac15\uc5d0\uc11c\ub3c4 \ub3d9\uc77c\ud55c \uacb0\uc815\ub9bd\uacc4 \ud0c4\ud654\ubb3c\uc774 \ud615\uc131\ub41c\ub2e4. \ucd9c\ucc98: J. Grosch, Heat Treatment with Gaseous Atmospheres, in Steel Heat Treatment: Metallurgy and Technologies (G.E. Totten, ed.), CRC Press, 2006, \uadf8\ub9bc 7.28.<\/figcaption><\/figure>\n\n\n\n

\ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \ub300\uc2e0 \ubca0\uc774\ub098\uc774\ud2b8<\/h2>\n\n\n\n

\ub290\ub9b0 \ub0c9\uac01\uc740 \ub450 \ubc88\uc9f8 \uacb0\uacfc\ub97c \ucd08\ub798\ud558\uba70, \uac19\uc740 \ubc29\ud5a5\uc73c\ub85c \uc791\uc6a9\ud55c\ub2e4. \ub0c9\uac01 \uc18d\ub3c4\uac00 \ucda9\ubd84\ud788 \ub5a8\uc5b4\uc9c0\uba74 \ubcc0\ud0dc \uc0dd\uc131\ubb3c\uc774 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \ub300\uc2e0 \ubca0\uc774\ub098\uc774\ud2b8\uac00 \ub418\uba70, \ubca0\uc774\ub098\uc774\ud2b8\ub294 \ub3d9\uc77c \uacbd\ub3c4\uc5d0\uc11c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ubcf4\ub2e4 \uc778\uc131\uc774 \ub0ae\ub2e4. 2\ucc28 \uacbd\ud654\uc5d0 \ud544\uc694\ud55c \uc11d\ucd9c\uc740 \uac70\uc758 \uc601\ud5a5\uc744 \ubc1b\uc9c0 \uc54a\uc73c\ubbc0\ub85c, \uacf5\uad6c\ub294 \uc27d\uac8c \uade0\uc5f4\uc774 \ubc1c\uc0dd\ud558\ub294 \uc870\uc9c1\uc744 \uac00\uc9c0\uba74\uc11c\ub3c4 \uc9c0\uc815\ub41c \uacbd\ub3c4\ub85c \ud15c\ud37c\ub9c1\ub420 \uc218 \uc788\ub2e4. \uacbd\ub3c4 \uc218\uce58\ub294 \uaddc\uaca9\uc5d0 \ub9de\uc9c0\ub9cc \uc778\uc131\uc740 \uadf8\ub807\uc9c0 \uc54a\ub2e4.<\/p>\n\n\n\n

\ub2e8\uba74 \ud06c\uae30\ub294 \ub2f4\uae08\uc9c8\uc5d0 \ubd88\ub9ac\ud558\uac8c \uc791\uc6a9\ud55c\ub2e4<\/h2>\n\n\n\n

\ub354 \ud070 \ub2e8\uba74\uc740 \ub3d9\uc77c\ud55c \ub9e4\uccb4\uc5d0\uc11c \ub354 \ub290\ub9ac\uac8c \ub0c9\uac01\ub418\uba70, \ud070 \ube14\ub85d\uc758 \uc911\uc2ec\ubd80\ub294 \ud45c\uba74\ubcf4\ub2e4 \ub354 \ub290\ub9ac\uac8c \ub0c9\uac01\ub41c\ub2e4. \ucd9c\ucc98\ub294 H13\uc5d0 \ub300\ud574 150 mm \ubc0f 300 mm \ud658\ubd09\uc758 \uc911\uc2ec\ubd80\ub97c \uc2dc\ubbac\ub808\uc774\uc158\ud558\ub294 \ub0c9\uac01 \uc18d\ub3c4\ub85c \ub0c9\uac01\ub41c \uc0e4\ub974\ud53c V-\ub178\uce58 \uc2dc\ud3b8\uacfc 25 mm \uacf5\ub7ad \uc2dc\ud3b8\uc744 \uc5ec\ub7ec \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uc5d0\uc11c \uce21\uc815\ud588\ub2e4. \uc778\uc131\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uac00 \uc0c1\uc2b9\ud558\uace0 \uc2dc\ubbac\ub808\uc774\uc158\ub41c \ub2e8\uba74\uc774 \ucee4\uc9c8\uc218\ub85d \uac10\uc18c\ud588\uc73c\uba70, \uc774 \ub450 \ubcc0\ud654 \ubaa8\ub450 \ub0c9\uac01 \uc18d\ub3c4\ub97c \ub0ae\ucd98\ub2e4. \uc2dc\ud5d8\uc740 \uc2e4\uc628\uacfc 425 °C\uc5d0\uc11c \uc218\ud589\ub418\uc5c8\uc73c\uba70, \uc138 \uc870\uac74\uc758 \uc21c\uc11c\ub294 \ub450 \uacbd\uc6b0 \ubaa8\ub450 \uc720\uc9c0\ub41c\ub2e4.<\/p>\n\n\n\n

\uc2dc\ubbac\ub808\uc774\uc158 \uc870\uac74<\/th>\ub0c9\uac01 \uc18d\ub3c4<\/th>\uc18c\ud615 \uacf5\ub7ad \uc2dc\ud3b8 \ub300\ube44 \uc778\uc131<\/th>\uc2e4\uc81c \ubd80\ud488\uc5d0 \ub300\ud55c \uc758\ubbf8<\/th><\/tr><\/thead>
25 mm, \uacf5\ub7ad<\/td>\uc138 \uc870\uac74 \uc911 \uac00\uc7a5 \ube60\ub984<\/td>\uc138 \uc870\uac74 \uc911 \uac00\uc7a5 \ub192\uc74c<\/td>\uc18c\ud615 \uacf5\uad6c\ub97c \ub2f4\uae08\uc9c8\ud560 \uc218 \uc788\ub294 \uc870\uac74.<\/td><\/tr>
150 mm \ud658\ubd09\uc758 \uc911\uc2ec\ubd80<\/td>\ub354 \ub290\ub9ac\uac8c<\/td>\ub354 \ub0ae\uc73c\uba70, \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uac00 \uc0c1\uc2b9\ud560\uc218\ub85d \ub354\uc6b1 \ub0ae\uc544\uc9d0<\/td>\uc911\ud615 \ube14\ub85d\uc740 \uc774\ubbf8 \uc911\uc2ec\ubd80\uc5d0\uc11c \uc704\ud5d8\uc774 \uc788\ub2e4.<\/td><\/tr>
300 mm \ud658\ubd09\uc758 \uc911\uc2ec\ubd80<\/td>\uc138 \uc870\uac74 \uc911 \uac00\uc7a5 \ub290\ub9bc<\/td>\uac00\uc7a5 \ub0ae\uc74c<\/td>\uac15\ub825\ud55c \ub2f4\uae08\uc9c8 \ub9e4\uccb4\ub3c4 \ub300\ud615 \ube14\ub85d\uc758 \uc911\uc2ec\ubd80\ub97c \ubcf4\ud638\ud560 \uc218 \uc5c6\ub2e4.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\ud658\ubd09\uc758 \uc911\uc2ec\ubd80\ub97c \uc2dc\ubbac\ub808\uc774\uc158\ud558\ub294 \ub0c9\uac01 \uc18d\ub3c4\ub85c \ub0c9\uac01\ub41c H13\uc758 \uc2e4\uc628 \ubc0f 425 °C\uc5d0\uc11c\uc758 \uc0e4\ub974\ud53c V-\ub178\uce58 \uc778\uc131. \uac00\uc7a5 \ud070 \ub2e8\uba74\uc5d0\uc11c\uc758 \uc778\uc131 \uc800\ud558\ub294 \uc911\ub7c9 \uacf5\uad6c\uac00 \uc911\uc2ec\ubd80\uc758 \ucde8\ud654\uc5d0 \ubbfc\uac10\ud55c \uc774\uc720\uc774\ub2e4.<\/em><\/p>\n\n\n\n

\uc81c\uc5b4\ub41c \uc5f4\ucc98\ub9ac \uc5f0\uad6c\uac00 H13\uc5d0\uc11c \uce21\uc815\ud55c \ub0b4\uc6a9<\/h2>\n\n\n\n

\ucd9c\ucc98\ub294 \ub3d9\uc77c \uac15\uc885\uc744 \ubaa8\ub450 45 HRC\ub97c \ubaa9\ud45c\ub85c \ud558\ub294 \uc138 \uac00\uc9c0 \uacbd\ud654 \uc870\uac74\uc73c\ub85c \ucc98\ub9ac\ud558\uace0 \uac01\uac01\uc758 \ucda9\uaca9 \uc778\uc131\uc744 \uce21\uc815\ud588\ub2e4. \uccab\uc9f8\ub294 \uad8c\uc7a5 \ucc98\ub9ac\ub85c, 1020 °C\uc5d0\uc11c \uacbd\ud654\ud558\uace0 610 °C\uc5d0\uc11c 2\ud68c \ud15c\ud37c\ub9c1\ud55c\ub2e4. \ub458\uc9f8\ub294 900 °C\uae4c\uc9c0\ub9cc \ub3c4\ub2ec\ud560 \uc218 \uc788\ub294 \ub178\ub97c \uc2dc\ubbac\ub808\uc774\uc158\ud558\uc5ec, 890 °C\uc5d0\uc11c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654\ud558\uace0 \uacbd\ub3c4\ub97c \uc720\uc9c0\ud558\uae30 \uc704\ud574 250 °C\uc5d0\uc11c \ud15c\ud37c\ub9c1\ud55c\ub2e4. \uc14b\uc9f8\ub294 \uace0\uc18d\ub3c4\uac15\uc758 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uc778 1150 °C\ub97c \uc2dc\ubbac\ub808\uc774\uc158\ud558\uace0, \uacbd\ub3c4\ub97c 45 HRC\ub85c \ub418\ub3cc\ub9ac\uae30 \uc704\ud574 \ud15c\ud37c\ub9c1\uc744 640 °C\ub85c \ub192\uc778\ub2e4.<\/p>\n\n\n\n

\uc0c1\ud0dc<\/th>\uacbd\ud654<\/th>\ub728\uc784<\/th>\uad8c\uc7a5 \ucc98\ub9ac \ub300\ube44 \uc778\uc131<\/th>\uadf8 \ubc16\uc758 \ubcc0\ud654<\/th><\/tr><\/thead>
\ucd94\ucc9c<\/td>1020 °C<\/td>610 °C, 2\uc2dc\uac04\uc529 2\ud68c<\/td>\uae30\uc900 \uc870\uac74<\/td>\uc774 \uac15\uc885\uc774 \uaddc\uaca9\ud654\ub41c \uc870\uc9c1.<\/td><\/tr>
\uc800\uc628 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654<\/td>890 °C<\/td>250 °C<\/td>\uc57d 40\ud37c\uc13c\ud2b8 \uac10\uc18c<\/td>\ubd88\uc644\uc804\ud55c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \ubcc0\ud0dc\ub294 \ubd88\uade0\uc77c\ud55c \uc870\uc9c1\uc744 \ub0a8\uae30\uba70, \uc0ac\uc6a9 \uc911 \uc5f0\ud654 \uc18d\ub3c4\ub294 \uc608\uc0c1\uce58\uc758 \uc57d 6\ubc30\uc785\ub2c8\ub2e4.<\/td><\/tr>
\ub192\uc740 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654<\/td>1150 °C<\/td>640 °C<\/td>\uc57d 90\ud37c\uc13c\ud2b8 \uac10\uc18c<\/td>\uc870\ub300\ud55c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uacb0\uc815\ub9bd, ASTM 3~4\ub85c \ud574\ub2f9 \uac15\uc885\uc774 \ubcf4\uc5ec\uc57c \ud560 7~10\uc5d0 \ubabb \ubbf8\uce58\uba70, \uacb0\uc815\ub9bd\uacc4\uc5d0 \ucd08\uc11d \ud0c4\ud654\ubb3c\uc774 \uc874\uc7ac\ud569\ub2c8\ub2e4.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\uc138 \uac00\uc9c0 \uacbd\ud654 \uc870\uac74\uc5d0\uc11c 45 HRC\ub85c \ud15c\ud37c\ub9c1\ud55c H13\uc758 \ucda9\uaca9 \uc778\uc131 \uce21\uc815\uac12. \ub450 \ub300\uc548 \ubaa8\ub450 \ubaa9\ud45c\ub85c \ud588\ub358 \uacbd\ub3c4 \uc99d\uac00 \uc5c6\uc774 \uc778\uc131\ub9cc \uc0c1\uc2e4\ud569\ub2c8\ub2e4.<\/em><\/p>\n\n\n\n

\uace0\uc628 \uc870\uac74\uc740 \uc8fc\uc758 \uae4a\uac8c \uc77d\uc744 \ud544\uc694\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uc720\uc6a9\ud55c \ud6a8\uacfc \ud558\ub098\uc640 \uadf8\ub807\uc9c0 \uc54a\uc740 \ud6a8\uacfc \ud558\ub098\ub97c \ub3d9\uc2dc\uc5d0 \uac00\uc838\uc624\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \ud0c4\ud654\ubb3c\uc774 \ub354 \ub9ce\uc774 \uc6a9\ud574\ub418\uba74 \ub354 \ub9ce\uc740 \ud569\uae08\uc6d0\uc18c\uac00 \uace0\uc6a9\ub418\uc5b4 2\ucc28 \uacbd\ud654\uac00 \uac15\ud654\ub418\ubbc0\ub85c, \ub3d9\uc77c\ud55c \uacbd\ub3c4\uc5d0 \ub3c4\ub2ec\ud558\ub824\uba74 \ud15c\ud37c\ub9c1 \uc628\ub3c4\ub97c \uc57d 30 °C \ub192\uc5ec\uc57c \ud569\ub2c8\ub2e4. \uc774\ub294 \ub0b4\ud15c\ud37c\ub9c1\uc131\uc758 \uc2e4\uc9c8\uc801\uc778 \ud5a5\uc0c1\uc785\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc774\ub294 \uc870\ub300\ud55c \uacb0\uc815\ub9bd\uacfc \uacb0\uc815\ub9bd\uacc4 \ud0c4\ud654\ubb3c \ud53c\ub9c9\uc744 \ub300\uac00\ub85c \uc5bb\uc5b4\uc9c0\uba70, \uc774\ub85c \uc778\ud55c \uc778\uc131 \uc190\uc2e4\uc774 \uadf8 \ud5a5\uc0c1\ubcf4\ub2e4 \ud6e8\uc52c \ud07d\ub2c8\ub2e4.<\/p>\n\n\n\n

\uace0\uc18d\ub3c4\uac15\uc740 \uacf5\uc815 \ubc94\uc704\uac00 \ub354 \uc881\uc2b5\ub2c8\ub2e4<\/h2>\n\n\n\n

\uace0\uc18d\ub3c4\uac15\uc740 \uacbd\ud654 \uc628\ub3c4\uac00 \uace0\uc0c1\uc120\uc5d0 \uadfc\uc811\ud558\uae30 \ub54c\ubb38\uc5d0 \uac00\uc7a5 \uadf9\ub2e8\uc801\uc778 \uacbd\uc6b0\uc785\ub2c8\ub2e4. \uc5ec\uc720\ub294 50 °C \ubbf8\ub9cc\uc785\ub2c8\ub2e4. M2\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc57d 1200 °C\uc5d0\uc11c \uacbd\ud654\ub429\ub2c8\ub2e4. \uc57d 1220 °C \uc774\uc0c1\uc5d0\uc11c\ub294 \uacbd\ub3c4 \uc99d\uac00 \uc5c6\uc774 \uc778\uc131\uc774 \uc800\ud558\ub418\uba70, \uc57d 1240 °C \uc774\uc0c1\uc5d0\uc11c\ub294 \ubbf8\uc138\uc870\uc9c1\uc758 \ud0c4\ud654\ubb3c \ub18d\ucd95 \ubd80\uc704\uc5d0 \uc561\uc0c1\uc774 \ud615\uc131\ub418\uc5b4 \uac15\uc7ac\uac00 \uc190\uc0c1\ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uac15\uc885\uc5d0\uc11c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\ub294 \uc870\uc815\ud560 \ud30c\ub77c\ubbf8\ud130\uac00 \uc544\ub2c8\ub77c \uc900\uc218\ud574\uc57c \ud560 \ud55c\uacc4\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\ucde8\ud654\ub97c \ubc29\uc9c0\ud558\ub294 \uc2e4\ubb34<\/h2>\n\n\n\n

\ubaa8\ub4e0 \uac83\uc740 \ub290\ub9b0 \ub0c9\uac01\uc744 \ubc29\uc9c0\ud558\ub294 \ub370\uc11c \ube44\ub86f\ub429\ub2c8\ub2e4. \uc5f4\uac04 \uacf5\uad6c\uac15\uc740 \uc804\ud1b5\uc801\uc73c\ub85c \uc720\ub0c9\ub418\uc5c8\uc73c\uba70, \uc624\ub298\ub0a0\uc5d0\ub294 \uc9c8\uc18c \uac00\uc555 \ub2f4\uae08\uc9c8\uc744 \uc774\uc6a9\ud55c \uc9c4\uacf5 \uc5f4\ucc98\ub9ac\uac00 \uc77c\ubc18\uc801\uc785\ub2c8\ub2e4. \uc9c4\uacf5 \ubc29\uc2dd\uc5d0\uc11c \ub0c9\uac01 \uc18d\ub3c4\ub294 \uc9c8\uc18c \uc555\ub825\uacfc \uac00\uc2a4 \uc21c\ud658\uc5d0 \uc758\ud574 \uacb0\uc815\ub418\uba70, \uc591\ubc29\ud5a5 \ubaa8\ub450 \uc815\ud655\ud558\uac8c \uc81c\uc5b4\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4. \ub2f4\uae08\uc9c8\uc774 \ub108\ubb34 \uac15\ud558\uac70\ub098 \ubd88\uade0\uc77c\ud558\uba74 \uacf5\uad6c\uac00 \ubcc0\ud615\ub418\uac70\ub098 \uade0\uc5f4\uc774 \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \ub2f4\uae08\uc9c8\uc774 \ub108\ubb34 \ub290\ub9ac\uba74 \uacb0\uc815\ub9bd\uacc4\uac00 \ucde8\ud654\ub429\ub2c8\ub2e4. \ucd9c\ucc98\ub294 H13\uc5d0 \ub300\ud55c \ubd81\ubbf8 \ub2e4\uc774\uce90\uc2a4\ud305 \ud611\ud68c(NADCA) \uc9c0\uce68\uc744 \uc5b8\uae09\ud558\uba70, \uc774\ub294 \uc9c4\uacf5 \uacbd\ud654 \uc2e4\ubb34\uc640 \ucc98\ub9ac \ud6c4 \ud30c\uad34 \uc2dc\ud5d8\uc6a9 \uc2dc\ud3b8 \uc0ac\uc6a9\uc744 \ub2e4\ub8f9\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub450 \ubc88\uc9f8 \uc218\ub2e8\uc740 \uacf5\uc815 \uc21c\uc11c\uc785\ub2c8\ub2e4. \uc2ec\ubd80\uc758 \ucde8\ud654 \uc704\ud5d8\uc740 \ub2e8\uba74 \ud06c\uae30\uc5d0 \ub530\ub77c \uc99d\uac00\ud558\ubbc0\ub85c, \uae4a\uc740 \uc870\uac01\uc774 \uc788\ub294 \uc911\ub7c9 \uacf5\uad6c\ub294 \ud669\uc0ad \uac00\uacf5 \ud6c4\uc5d0 \uc5f4\ucc98\ub9ac\ud574\uc57c \ud558\uba70 \uadf8 \uc804\uc5d0 \ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4. \uadf8\ub798\uc57c \ucde8\ud654\ub41c \uc2ec\ubd80\uac00 \uc791\uc5c5 \ud45c\uba74\uc744 \uc808\uc0ad\ud574 \ub0b8 \uc18c\uc7ac\uac00 \ub418\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ub2e4\uc774\uce90\uc2a4\ud305 \uae08\ud615\uc740 \ubcf4\ud1b5 \uac00\uacf5 \ud6c4 \uc5f4\ucc98\ub9ac\ub418\uba70, \uadf8 \uacbd\uc6b0\uc5d0\ub3c4 \ud45c\uba74 \ubd80\uc704\uc758 \ub0c9\uac01 \uc18d\ub3c4\ub97c \uc81c\uc5b4\ud574\uc57c \ud569\ub2c8\ub2e4. \uae08\ud615\uc5d0\uc11c \ud45c\uba74\uc740 \uc5f4\ud53c\ub85c\ub97c \uacac\ub38c\uc57c \ud558\ub294 \ubd80\uc704\uc774\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc2e4\ubb34<\/th>\uc81c\uc5b4 \ub300\uc0c1<\/th>\uc774\ub97c \uc9c0\ud0a4\uc9c0 \uc54a\uc744 \ub54c \ubc1c\uc0dd\ud558\ub294 \ubb38\uc81c<\/th><\/tr><\/thead>
\uc9c4\uacf5\ub85c\uc5d0\uc11c\uc758 \ub2f4\uae08\uc9c8 \uc18d\ub3c4 \uc81c\uc5b4<\/td>\uac00\uc2a4 \uc555\ub825 \ubc0f \uac00\uc2a4 \uc21c\ud658<\/td>\ub108\ubb34 \uac15\ud558\uace0 \ub108\ubb34 \ubd88\uade0\uc77c\ud558\uba74 \ubcc0\ud615 \ub610\ub294 \uade0\uc5f4. \ub108\ubb34 \ub290\ub9ac\uba74 \uacb0\uc815\ub9bd\uacc4 \ud0c4\ud654\ubb3c \ud53c\ub9c9\uacfc \uc2ec\ubd80\uc758 \ubca0\uc774\ub098\uc774\ud2b8.<\/td><\/tr>
\ud669\uc0ad \uac00\uacf5 \ud6c4 \uc5f4\ucc98\ub9ac<\/td>\ucde8\ud654\ub41c \uc2ec\ubd80\uc758 \uc704\uce58<\/td>\uc644\uc131\ub41c \uacf5\uad6c\ub97c \uc5f4\ucc98\ub9ac\ud558\uba74 \ucde8\ud654\ub41c \uc18c\uc7ac\uac00 \uc791\uc5c5 \ubd80\uc704\uc5d0 \ub0a8\uc2b5\ub2c8\ub2e4.<\/td><\/tr>
\uacbd\ud654 \ud6c4 \uc2dc\ud3b8 \uc2dc\ud5d8<\/td>\ucc98\ub9ac\uac00 \uc2e4\uc81c\ub85c \uc6d0\ud558\ub294 \ubb3c\uc131\uc744 \ub9cc\ub4e4\uc5b4\ub0c8\ub294\uc9c0 \uc5ec\ubd80<\/td>\uacbd\ub3c4\ub9cc\uc73c\ub85c\ub294 \uc778\uc131\uc774 \ub0a8\uc544 \uc788\uc9c0 \uc54a\uc740 \ucc98\ub9ac\ub97c \ud1b5\uacfc\uc2dc\ud0b5\ub2c8\ub2e4.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\uc911\ub7c9 \uacf5\uad6c\uc5d0 \ub300\ud574 \ucd9c\ucc98\uac00 \uc81c\uc2dc\ud558\ub294 \uc138 \uac00\uc9c0 \uc2e4\ubb34. \uac01\uac01\uc740 \uacbd\ub3c4\ub294 \uaddc\uaca9\uc5d0 \ub9de\uc9c0\ub9cc \uc778\uc131\uc774 \uc0ac\ub77c\uc9c4 \ub3d9\uc77c\ud55c \uc704\ud5d8\uc744 \uaca8\ub0e5\ud569\ub2c8\ub2e4.<\/em><\/p>\n\n\n\n

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\ub290\ub9b0 \ub0c9\uac01\uacfc \uacb0\uc815\ub9bd\uacc4 \ud0c4\ud654\ubb3c \ucde8\ud654, \uc778\uc1c4\uc6a9 PDF<\/strong><\/p>\n\n

\ub290\ub9b0 \ub2f4\uae08\uc9c8 \uc2dc \uad6c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8 \uacb0\uc815\ub9bd\uacc4\uc5d0 \ud615\uc131\ub418\ub294 \ud0c4\ud654\ubb3c \ud53c\ub9c9, \ub2e8\uba74 \ud06c\uae30\uc640 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uc758 \uc601\ud5a5, \uc138 \uac00\uc9c0 \uacbd\ud654 \uc870\uac74\uc5d0\uc11c \uce21\uc815\ud55c H13\uc758 \uc778\uc131, \uadf8\ub9ac\uace0 \uc774\ub97c \ubc29\uc9c0\ud558\ub294 \uc2e4\ubb34\ub97c \ub2f9\uc0ac \uc5f0\ub77d\ucc98\uc640 \ud568\uaed8 \ud558\ub098\uc758 \ucc38\uace0 \uc790\ub8cc\ub85c \uc815\ub9ac\ud588\uc2b5\ub2c8\ub2e4.<\/p>\n\n

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PDF \ub2e4\uc6b4\ub85c\ub4dc, 374 KB<\/a><\/div>\n\n<\/div>\n<\/div>\n\n\n\n

\uc774\uac83\uc774 \uacf5\uad6c\uac15 \ubb38\uc758\uc5d0 \uc2dc\uc0ac\ud558\ub294 \uc810<\/h2>\n\n\n\n

\ub2f4\uae08\uc9c8 \ub9e4\uccb4\uc640 \uadf8\uc5d0 \ub530\ub978 \ub0c9\uac01 \uc18d\ub3c4\ub294 \ub2e4\uc74c \ud398\uc774\uc9c0\uc5d0 \uc815\ub9ac\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4: H13 \ub2f4\uae08\uc9c8 \ubc0f \ub0c9\uac01 \uc18d\ub3c4 \ud398\uc774\uc9c0<\/a>, \uadf8\ub9ac\uace0 \ube60\ub978 \ub2f4\uae08\uc9c8\ub85c \ubc1c\uc0dd\ud558\ub294 \uade0\uc5f4\uc740 \ub2e4\uc74c \ud398\uc774\uc9c0\uc5d0 \uc788\uc2b5\ub2c8\ub2e4: \ub2f4\uae08\uc9c8 \uade0\uc5f4 \ud398\uc774\uc9c0<\/a>. H13 \ubbf8\uc138\uc870\uc9c1 \ud398\uc774\uc9c0<\/a> \ubc0f \uc62c\ubc14\ub978 \ub2f4\uae08\uc9c8 \ud6c4 \uacf5\uad6c\uac15\uc774 \ubcf4\uc5ec\uc57c \ud560 \ubbf8\uc138\uc870\uc9c1\uc740 \ub2e4\uc74c \ud398\uc774\uc9c0\uc5d0 \uc788\uc2b5\ub2c8\ub2e4:<\/a>\uacbd\ud654 \ud6c4 \ubbf8\uc138\uad6c\uc131\ubb3c \ud398\uc774\uc9c0 . \ubca0\uc774\ub098\uc774\ud2b8\uc640 \uac01 \ub2e8\uba74 \ud06c\uae30\uc5d0\uc11c\uc758 \uacbd\ub3c4\ub294 \ub2e4\uc74c\uc5d0 \uc788\uc2b5\ub2c8\ub2e4:<\/a>\uc624\uc2a4\ud15c\ud37c\ub9c1 \ubc0f \ubca0\uc774\ub098\uc774\ud2b8 \ucc28\ud2b8 \ucda9\uaca9 \uc778\uc131 \ucc28\ud2b8<\/a> \ubc0f \ud30c\uad34 \uc778\uc131 \ucc28\ud2b8<\/a>, \uadf8\ub9ac\uace0 \uc5f4\uac04 \ubc0f \uace0\uc18d\ub3c4 \uac15\uc885\uc758 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uacf5\uc815 \ubc94\uc704\ub294 \ub2e4\uc74c \ud398\uc774\uc9c0\uc5d0 \uc788\uc2b5\ub2c8\ub2e4: \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4 \ud398\uc774\uc9c0<\/a>.<\/p>\n\n\n\n

\uc774 \uac12\ub4e4\uc744 \uc0ac\uc6a9\ud558\uae30 \uc804\uc5d0<\/h3>\n\n\n\n

\uc774 \ud398\uc774\uc9c0\ub294 \ubc1c\ud45c\ub41c \uc5f0\uad6c\uc758 \ucc38\uace0 \uc694\uc57d\uc774\uba70 Aobo Steel\uc758 \uc0ac\uc591\uc774 \uc544\ub2d9\ub2c8\ub2e4. \uc778\uc131 \uc218\uce58\uc640 \uc5f4\ucc98\ub9ac \ubc18\uc751\uc740 \ud2b9\uc815 \uc870\uac74\uc5d0\uc11c \ud55c \uac15\uc885\uc744 \uc2dc\ud5d8\ud55c \ucd9c\ucc98\uc5d0\uc11c \uc778\uc6a9\ud55c \uac83\uc785\ub2c8\ub2e4. \ud2b9\uc815 \uacf5\uad6c\uc758 \uc785\uacc4\uc5d0 \ud615\uc131\ub418\ub294 \ud53c\ub9c9\uc740 \uc6a9\ud574 \ubc29\uc2dd, \uc131\ubd84 \ubd84\uc11d \ubc0f \uc5f4\ucc98\ub9ac\ub85c\uc5d0\ub3c4 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4. \ucd5c\uc885 \uc0ac\uc591\uc740 \uc791\uc5c5 \uc2dc \ud655\uc778\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

\ucd9c\ucc98: Failure Analysis of Heat Treated Steel Components (L. C. F. Canale, R. A. Mesquita and G. E. Totten), ASM International, 2008.<\/p>","protected":false},"excerpt":{"rendered":"

Slow Cooling and Grain Boundary Carbide Embrittlement in Tool Steel A tool steel reaches its working hardness easily. The grades used for tools have high hardenability, and the as-quenched hardness is obtained across a wide range of cooling rates, even when the quenching practice is poor. What the poor practice costs is toughness, and the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"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":"normal-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","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":"default","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 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Embrittlement<\/title>\n<meta name=\"description\" content=\"Why a slow quench embrittles tool steel, how section size and austenitizing temperature form a carbide film on the grain boundaries, and how to avoid it.\" \/>\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\/grain-boundary-carbide-embrittlement-tool-steel\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Slow Cooling and Grain Boundary Carbide Embrittlement in Tool Steel\" \/>\n<meta property=\"og:description\" content=\"Why a slow quench embrittles tool steel, how section size and austenitizing temperature form a carbide film on the grain boundaries, and how to avoid it.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aobosteel.com\/ko\/grain-boundary-carbide-embrittlement-tool-steel\/\" 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Cooling and Grain Boundary Carbide Embrittlement in Tool Steel A tool steel reaches its working hardness easily. 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