{"id":19421,"date":"2026-09-21T13:28:51","date_gmt":"2026-09-21T05:28:51","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=19421"},"modified":"2026-10-15T23:43:20","modified_gmt":"2026-10-15T15:43:20","slug":"steel-machinability-ratings-chart","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/steel-machinability-ratings-chart\/","title":{"rendered":"\uac15\uc7ac \ud53c\uc0ad\uc131 \ub4f1\uae09 \ucc28\ud2b8, 1212 \uac15\uc7ac \uae30\uc900 100"},"content":{"rendered":"

\uac15\uc7ac \ud53c\uc0ad\uc131 \ub4f1\uae09 \ucc28\ud2b8<\/h1>\n\n\n\n

1212 \uac15\uc7ac\ub97c \uae30\uc900\uc73c\ub85c \ud55c \ud0c4\uc18c\uac15, \ucf8c\uc0ad\uac15 \ubc0f \ud569\uae08\uac15\uc758 \ud53c\uc0ad\uc131 \ub4f1\uae09\uc73c\ub85c, 1212\ub97c 100\uc73c\ub85c \uc124\uc815\ud558\uace0 \ub2e4\ub978 \ubaa8\ub4e0 \ub4f1\uae09\uc740 \ud5c8\uc6a9\ub418\ub294 \uc808\uc0ad \uc18d\ub3c4\uc758 \ubc31\ubd84\uc728\ub85c \ud45c\uc2dc\ud569\ub2c8\ub2e4. \ub4f1\uae09\uc774 \uce21\uc815\ub41c \uacbd\ub3c4 \ubc94\uc704\ub294 \uac01 \ub4f1\uae09\uc5d0 \ub530\ub77c \ud568\uaed8 \uc81c\uacf5\ub429\ub2c8\ub2e4. \ud53c\uc0ad\uc131\uc740 \ub4f1\uae09 \ubc88\ud638\ubcf4\ub2e4 \uacbd\ub3c4\ub97c \ub354 \ub9ce\uc774 \ub530\ub974\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

1212 = 100<\/strong> \ub4f1\uae09 \uae30\uc900<\/p>\n\n\n\n

140<\/strong> \ub4f1\uae09, 1212 \uac15\uc7ac \ub300\ube44 \uc808\uc0ad \uc18d\ub3c4 \ubc31\ubd84\uc728<\/p>\n\n\n\n

179-235<\/strong> \ub4f1\uae09\uc774 \uc801\uc6a9\ub418\ub294 \uacbd\ub3c4 \ubc94\uc704<\/p>\n\n\n\n

(b)<\/strong> \uac01\uc8fc<\/p>\n\n\n\n

\ud0c4\uc18c\uac15<\/p>\n\n\n\n

1212 \uac15\uc7ac\ub97c \uae30\uc900\uc73c\ub85c \ud55c \ub4f1\uae09\uc73c\ub85c, 1212\ub294 100\uc73c\ub85c \uc124\uc815\ub429\ub2c8\ub2e4. \ucd9c\ucc98\uc758 \ud45c 4.<\/p>\n\n\n\n

SAE\/AISI \ub4f1\uae09<\/th>\ud53c\uc0ad\uc131 \ub4f1\uae09<\/th>\uacbd\ub3c4, HB<\/th><\/tr><\/thead>
1212<\/td>100<\/td>175<\/td><\/tr>
1005<\/td>45<\/td>95<\/td><\/tr>
1006<\/td>50<\/td>95<\/td><\/tr>
1010<\/td>55<\/td>105<\/td><\/tr>
1015<\/td>60<\/td>111<\/td><\/tr>
1017<\/td>65<\/td>116<\/td><\/tr>
1019<\/td>70<\/td>131<\/td><\/tr>
1030<\/td>70<\/td>149<\/td><\/tr>
1038<\/td>65<\/td>163<\/td><\/tr>
1040<\/td>60<\/td>170<\/td><\/tr>
1045<\/td>55<\/td>179<\/td><\/tr>
1045<\/td>60<\/td>170<\/td><\/tr>
1050<\/td>45<\/td>197<\/td><\/tr>
1050<\/td>55<\/td>189<\/td><\/tr>
1065<\/td>60<\/td>183<\/td><\/tr>
1070<\/td>55<\/td>187<\/td><\/tr>
1075<\/td>48<\/td>192<\/td><\/tr>
1085<\/td>45<\/td>192<\/td><\/tr>
1095<\/td>45<\/td>197<\/td><\/tr>
1524<\/td>60<\/td>163<\/td><\/tr>
1536<\/td>55<\/td>187<\/td><\/tr>
1541<\/td>45<\/td>207<\/td><\/tr>
1547<\/td>40<\/td>207<\/td><\/tr>
1547<\/td>45<\/td>187<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\ucd9c\ucc98: ASM Handbook, Vol 1 (10th ed.), “Machinability of Steels”, \ud45c 4.<\/p>\n\n\n\n

\n

\uac15 \ud53c\uc0ad\uc131 \uc9c0\uc218\ud45c, \uc778\uc1c4\uc6a9 PDF<\/strong><\/p>\n\n

\uc77c\ubc18 \ud0c4\uc18c\uac15, \ucf8c\uc0ad\uac15, \ud569\uae08\uac15 \ud45c\uc640 \uac01 \uc9c0\uc218\ub97c \uce21\uc815\ud55c \uacbd\ub3c4 \ubc94\uc704, \uc5f0\ub77d\ucc98\ub97c \ub2f4\uc740 A4 2\ud398\uc774\uc9c0\uc785\ub2c8\ub2e4. PDF\ub294 \uc601\uc5b4\ub85c \uc81c\uacf5\ub429\ub2c8\ub2e4.<\/p>\n\n

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PDF \ub2e4\uc6b4\ub85c\ub4dc, 443 KB<\/a><\/div>\n\n<\/div>\n<\/div>\n\n\n\n

\ucf8c\uc0ad \uc7ac\ud669\ud654 \ubc0f \uc7ac\uc778\ud654 \uac15<\/p>\n\n\n\n

1212 \uac15\uc7ac\uc5d0 \uc0ac\uc6a9\ub41c \uc18d\ub3c4\uc758 \ubc31\ubd84\uc728\ub85c \ub098\ud0c0\ub0b8 \uc808\uc0ad \uc18d\ub3c4. \ucd9c\ucc98\uc758 \ud45c 5.<\/p>\n\n\n\n

\ub4f1\uae09<\/th>\ud53c\uc0ad\uc131 \ub4f1\uae09, %<\/th>\uacbd\ub3c4, HB<\/th><\/tr><\/thead>
1117<\/td>90<\/td>137<\/td><\/tr>
1118<\/td>85<\/td>143<\/td><\/tr>
1137<\/td>70<\/td>197<\/td><\/tr>
1140<\/td>70<\/td>170<\/td><\/tr>
1141<\/td>70<\/td>212<\/td><\/tr>
1144<\/td>80<\/td>217<\/td><\/tr>
1146<\/td>70<\/td>187<\/td><\/tr>
1151<\/td>65<\/td>207<\/td><\/tr>
1212<\/td>100<\/td>—<\/td><\/tr>
1213<\/td>136<\/td>—<\/td><\/tr>
1215<\/td>136<\/td>—<\/td><\/tr>
12L14<\/td>160<\/td>163<\/td><\/tr>
12L14<\/td>190<\/td>137<\/td><\/tr>
12L14<\/td>235<\/td>137<\/td><\/tr>
12L14<\/td>295<\/td>137<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\ucd9c\ucc98: ASM Handbook, Vol 1 (10th ed.), “Machinability of Steels”, \ud45c 5.<\/p>\n\n\n\n

\ud569\uae08\uac15<\/p>\n\n\n\n

\uad00\ud1b5 \uacbd\ud654 \ud569\uae08 \ub4f1\uae09\uc5d0 \ub300\ud55c \ub4f1\uae09\uc73c\ub85c, \ub2e4\uc2dc 1212 \uac15\uc7ac\ub97c 100\uc73c\ub85c \uae30\uc900\ud569\ub2c8\ub2e4. \ucd9c\ucc98\uc758 \ud45c 6.<\/p>\n\n\n\n

\ub4f1\uae09<\/th>\ud53c\uc0ad\uc131 \ub4f1\uae09<\/th>\uacbd\ub3c4, HB<\/th><\/tr><\/thead>
1330<\/td>55<\/td>179–235<\/td><\/tr>
1340<\/td>50<\/td>183–241<\/td><\/tr>
1345<\/td>45<\/td>183–241<\/td><\/tr>
4024<\/td>75<\/td>156–207<\/td><\/tr>
4028<\/td>75<\/td>167–212<\/td><\/tr>
4042<\/td>65<\/td>179–229<\/td><\/tr>
4130<\/td>70<\/td>187–229<\/td><\/tr>
4140<\/td>65<\/td>187–229<\/td><\/tr>
41L40<\/td>85<\/td>185–230<\/td><\/tr>
4150<\/td>55<\/td>187–240<\/td><\/tr>
4340<\/td>50<\/td>187–240<\/td><\/tr>
4620<\/td>65<\/td>183–229<\/td><\/tr>
50B40<\/td>65<\/td>174–223<\/td><\/tr>
50B60<\/td>55<\/td>170–212<\/td><\/tr>
5130<\/td>70<\/td>174–212<\/td><\/tr>
5140<\/td>65<\/td>179–217<\/td><\/tr>
5160<\/td>55<\/td>179–217<\/td><\/tr>
51B60<\/td>55<\/td>179–217<\/td><\/tr>
50100<\/td>40<\/td>183–240<\/td><\/tr>
51100<\/td>40<\/td>183–240<\/td><\/tr>
52100<\/td>40<\/td>183–240<\/td><\/tr>
8115<\/td>65<\/td>163–202<\/td><\/tr>
81B45<\/td>65<\/td>179–223<\/td><\/tr>
8630<\/td>70<\/td>179–229<\/td><\/tr>
8620<\/td>65<\/td>179–235<\/td><\/tr>
86L20<\/td>85<\/td>—<\/td><\/tr>
8660<\/td>55<\/td>179–217<\/td><\/tr>
8645<\/td>65<\/td>184–217<\/td><\/tr>
86B45<\/td>65<\/td>184–217<\/td><\/tr>
8740<\/td>65<\/td>184–217<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\ucd9c\ucc98: ASM Handbook, Vol 1 (10th ed.), “Machinability of Steels”, \ud45c 6.<\/p>\n\n\n\n

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\uac15 \ud53c\uc0ad\uc131 \uc9c0\uc218\ud45c, \uc778\uc1c4\uc6a9 PDF<\/strong><\/p>\n\n

\uc77c\ubc18 \ud0c4\uc18c\uac15, \ucf8c\uc0ad\uac15, \ud569\uae08\uac15 \ud45c\uc640 \uac01 \uc9c0\uc218\ub97c \uce21\uc815\ud55c \uacbd\ub3c4 \ubc94\uc704, \uc5f0\ub77d\ucc98\ub97c \ub2f4\uc740 A4 2\ud398\uc774\uc9c0\uc785\ub2c8\ub2e4. PDF\ub294 \uc601\uc5b4\ub85c \uc81c\uacf5\ub429\ub2c8\ub2e4.<\/p>\n\n

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PDF \ub2e4\uc6b4\ub85c\ub4dc, 443 KB<\/a><\/div>\n\n<\/div>\n<\/div>\n\n\n\n