{"id":18269,"date":"2026-09-14T11:26:38","date_gmt":"2026-09-14T03:26:38","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=18269"},"modified":"2026-10-19T22:54:49","modified_gmt":"2026-10-19T14:54:49","slug":"tool-steel-density-thermal-expansion","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/tool-steel-density-thermal-expansion\/","title":{"rendered":"\uacf5\uad6c\uac15 \ubc00\ub3c4 \ubc0f \uc5f4\ud33d\ucc3d \ucc28\ud2b8"},"content":{"rendered":"

\uacf5\uad6c\uac15 \ubc00\ub3c4 \ubc0f \uc5f4\ud33d\ucc3d \ucc28\ud2b8<\/h1>\n\n\n\n

57\uc885 \uacf5\uad6c\uac15\uc758 \ubc00\ub3c4 \ubc0f \ud3c9\uade0 \uc5f4\ud33d\ucc3d \u2014 \uc218\ub0c9, \ub0b4\ucda9\uaca9, \uc720\ub0c9, \uacf5\ub0c9 \uacbd\ud654, \ub0c9\uac04 \uac00\uacf5\uc6a9 (D)<\/a>, \uc5f4\uac04 \uac00\uacf5\uc6a9 (H)<\/a>, \uace0\uc18d\ub3c4\uac15 (T, M)<\/a>, \ud2b9\uc218 \ubaa9\uc801(L) \ubc0f \uae08\ud615(P) \ud0c0\uc785. \uc5f4\ud33d\ucc3d \ub610\ub294 \uc911\ub7c9\uc744 \uace0\ub824\ud558\ub294 \uae08\ud615 \ubc0f \uacf5\uad6c \uc124\uacc4\ub97c \uc704\ud574 \ubbf8\ud130\ubc95(g\/cm\u00b3, \u00b5m\/m\u00b7K)\uacfc \uc57c\ub4dc\ud30c\uc6b4\ub4dc\ubc95(lb\/in.\u00b3, \u00b5in.\/in.\u00b7\u00b0F) \uac12\uc744 \ubaa8\ub450 \uc218\ub85d\ud588\uc2b5\ub2c8\ub2e4. \uc774 \uac15\uc885\ub4e4\uc758 \uc804\uccb4 \uae30\uacc4\uc801 \ub370\uc774\ud130\ub294 \ub2e4\uc74c\uc5d0 \uc788\uc2b5\ub2c8\ub2e4: \uacf5\uad6c\uac15 \ud2b9\uc131 \ucc28\ud2b8<\/a>.<\/p>\n\n\n\n

\uc720\ud615<\/th>\ubc00\ub3c4
g\/cm\u00b3<\/th>		\ubc00\ub3c4
lb\/in.\u00b3<\/th>		\u00b5m\/m\u00b7K
20\u2192100 \u00b0C<\/th>		\u00b5m\/m\u00b7K
\u2192200 \u00b0C<\/th>		\u00b5m\/m\u00b7K
\u2192425 \u00b0C<\/th>		\u00b5m\/m\u00b7K
\u2192540 \u00b0C<\/th>		\u00b5m\/m\u00b7K
\u2192650 \u00b0C<\/th>		\u00b5in.\/in.\u00b7\u00b0F
70\u2192200 \u00b0F<\/th>		\u00b5in.\/in.\u00b7\u00b0F
\u2192400 \u00b0F<\/th>		\u00b5in.\/in.\u00b7\u00b0F
\u2192800 \u00b0F<\/th>		\u00b5in.\/in.\u00b7\u00b0F
\u21921000 \u00b0F<\/th>		\u00b5in.\/in.\u00b7\u00b0F
\u21921200 \u00b0F<\/th><\/tr><\/thead>
W1<\/td>7.84<\/td>0.282<\/td>10.4<\/td>11.0<\/td>13.1<\/td>13.8(a)<\/sup><\/td>14.2(b)<\/sup><\/td>5.76<\/td>6.13<\/td>7.28<\/td>7.64(a)<\/sup><\/td>7.90(b)<\/sup><\/td><\/tr>
W2<\/td>7.85<\/td>0.283<\/td>\u2014<\/td>\u2014<\/td>14.4<\/td>14.8<\/td>14.9<\/td>\u2014<\/td>\u2014<\/td>8.0<\/td>8.2<\/td>8.3<\/td><\/tr>
S1<\/a><\/td>7.88<\/td>0.285\u2022<\/td>12.4<\/td>12.6<\/td>13.5<\/td>13.9<\/td>14.2<\/td>6.9<\/td>7.0<\/td>7.5<\/td>7.7<\/td>7.9<\/td><\/tr>
S2<\/td>7.79<\/td>0.281<\/td>10.9<\/td>11.9<\/td>13.5<\/td>14.0<\/td>14.2<\/td>6.0<\/td>6.6<\/td>7.5<\/td>7.8<\/td>7.9<\/td><\/tr>
S5<\/td>7.76<\/td>0.280<\/td>\u2014<\/td>\u2014<\/td>12.6<\/td>13.3<\/td>13.7<\/td>\u2014<\/td>\u2014<\/td>7.0<\/td>7.4<\/td>7.6<\/td><\/tr>
S6<\/td>7.75<\/td>0.279<\/td>\u2014<\/td>\u2014<\/td>12.6<\/td>13.3<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>7.0<\/td>7.4<\/td>\u2014<\/td><\/tr>
S7<\/a><\/td>7.76<\/td>0.280<\/td>\u2014<\/td>12.6<\/td>13.3<\/td>13.7(a)<\/sup><\/td>13.3<\/td>\u2014<\/td>7.0<\/td>7.4<\/td>7.6(a)<\/sup><\/td>7.4<\/td><\/tr>
O1<\/a><\/td>7.85<\/td>0.283<\/td>\u2014<\/td>10.6(c)<\/sup><\/td>12.8<\/td>14.0(d)<\/sup><\/td>14.4(d)<\/sup><\/td>\u2014<\/td>5.9(c)<\/sup><\/td>7.1<\/td>7.8(d)<\/sup><\/td>8.0(d)<\/sup><\/td><\/tr>
O2<\/a><\/td>7.66<\/td>0.277<\/td>11.2<\/td>12.6<\/td>13.9<\/td>14.6<\/td>15.1<\/td>6.2<\/td>7.0<\/td>7.7<\/td>8.1<\/td>8.4<\/td><\/tr>
O6<\/td>7.70<\/td>0.277<\/td>\u2014<\/td>11.2<\/td>12.6<\/td>12.9<\/td>13.7<\/td>\u2014<\/td>6.2<\/td>7.0<\/td>7.2<\/td>7.6<\/td><\/tr>
O7<\/td>7.8<\/td>0.282<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
A2<\/a><\/td>7.86<\/td>0.284<\/td>10.7<\/td>10.6(c)<\/sup><\/td>12.9<\/td>14.0<\/td>14.2<\/td>5.96<\/td>5.9(c)<\/sup><\/td>7.2<\/td>7.8<\/td>7.9<\/td><\/tr>
A6<\/td>7.84<\/td>0.283<\/td>11.5<\/td>12.4<\/td>13.5<\/td>13.9<\/td>14.2<\/td>6.4<\/td>6.9<\/td>7.5<\/td>7.7<\/td>7.9<\/td><\/tr>
A7<\/td>7.66<\/td>0.277<\/td>\u2014<\/td>\u2014<\/td>12.4<\/td>12.9<\/td>13.5<\/td>\u2014<\/td>\u2014<\/td>6.9<\/td>7.2<\/td>7.5<\/td><\/tr>
A8<\/td>7.87<\/td>0.284<\/td>\u2014<\/td>\u2014<\/td>12.0<\/td>12.4<\/td>12.6<\/td>\u2014<\/td>\u2014<\/td>6.7<\/td>6.9<\/td>7.0<\/td><\/tr>
A9<\/a><\/td>7.78<\/td>0.281<\/td>\u2014<\/td>\u2014<\/td>12.0<\/td>12.4<\/td>12.6<\/td>\u2014<\/td>\u2014<\/td>6.7<\/td>6.9<\/td>7.0<\/td><\/tr>
A10<\/td>7.68<\/td>0.278<\/td>12.8<\/td>13.3<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>7.1<\/td>7.4<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
D2<\/a><\/td>7.70<\/td>0.278<\/td>10.4<\/td>10.3<\/td>11.9<\/td>12.2<\/td>12.2<\/td>5.8<\/td>5.7<\/td>6.6<\/td>6.8<\/td>6.8<\/td><\/tr>
D3<\/a><\/td>7.70<\/td>0.278<\/td>12.0<\/td>11.7<\/td>12.9<\/td>13.1<\/td>13.5<\/td>6.7<\/td>6.5<\/td>7.2<\/td>7.3<\/td>7.5<\/td><\/tr>
D4<\/td>7.70<\/td>0.278<\/td>\u2014<\/td>\u2014<\/td>12.4<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>6.9<\/td>\u2014<\/td>\u2014<\/td><\/tr>
D5<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>12.0<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>6.7<\/td><\/tr>
H10<\/a><\/td>7.81<\/td>0.281<\/td>\u2014<\/td>\u2014<\/td>12.2<\/td>13.3<\/td>13.7<\/td>\u2014<\/td>\u2014<\/td>6.8<\/td>7.4<\/td>7.6<\/td><\/tr>
H11<\/a><\/td>7.75<\/td>0.280<\/td>11.9<\/td>12.4<\/td>12.8<\/td>12.9<\/td>13.3<\/td>6.6<\/td>6.9<\/td>7.1<\/td>7.2<\/td>7.4<\/td><\/tr>
H13<\/a><\/td>7.76<\/td>0.280<\/td>10.4<\/td>11.5<\/td>12.2<\/td>12.4<\/td>13.1<\/td>5.8<\/td>6.4<\/td>6.8<\/td>6.9<\/td>7.3<\/td><\/tr>
H14<\/td>7.89<\/td>0.285<\/td>11.0<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>6.1<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
H19<\/td>7.98<\/td>0.288<\/td>11.0<\/td>11.0<\/td>12.0<\/td>12.4<\/td>12.9<\/td>6.1<\/td>6.1<\/td>6.7<\/td>6.9<\/td>7.2<\/td><\/tr>
H21<\/td>8.28<\/td>0.299<\/td>12.4<\/td>12.6<\/td>12.9<\/td>13.5<\/td>13.9<\/td>6.9<\/td>7.0<\/td>7.2<\/td>7.5<\/td>7.7<\/td><\/tr>
H22<\/td>8.36<\/td>0.302<\/td>11.0<\/td>\u2014<\/td>11.5<\/td>12.0<\/td>12.4<\/td>6.1<\/td>\u2014<\/td>6.4<\/td>6.7<\/td>6.9<\/td><\/tr>
H26<\/td>8.67<\/td>0.313<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>12.4<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>6.9<\/td>\u2014<\/td><\/tr>
H42<\/td>8.15<\/td>0.295<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>11.9<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>6.6<\/td>\u2014<\/td><\/tr>
T1<\/td>8.67<\/td>0.313<\/td>\u2014<\/td>9.7<\/td>11.2<\/td>11.7<\/td>11.9<\/td>\u2014<\/td>5.4<\/td>6.2<\/td>6.5<\/td>6.6<\/td><\/tr>
T2<\/td>8.67<\/td>0.313<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
T4<\/td>8.68<\/td>0.313<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>11.9<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>6.6<\/td>\u2014<\/td><\/tr>
T5<\/td>8.75<\/td>0.316<\/td>11.2<\/td>\u2014<\/td>\u2014<\/td>11.5<\/td>\u2014<\/td>6.2<\/td>\u2014<\/td>\u2014<\/td>6.4<\/td>\u2014<\/td><\/tr>
T6<\/td>8.89<\/td>0.321<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
T8<\/td>8.43<\/td>0.305<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
T15<\/td>8.19<\/td>0.296<\/td>\u2014<\/td>9.9<\/td>11.0<\/td>11.5<\/td>\u2014<\/td>\u2014<\/td>5.5(c)<\/sup><\/td>6.1<\/td>6.4<\/td>\u2014<\/td><\/tr>
M1<\/td>7.89<\/td>0.285<\/td>\u2014<\/td>10.6(c)<\/sup><\/td>11.3<\/td>12.0<\/td>12.4<\/td>\u2014<\/td>5.9(c)<\/sup><\/td>6.3<\/td>6.7<\/td>6.9<\/td><\/tr>
M2<\/a><\/td>8.16<\/td>0.295<\/td>10.1<\/td>9.4(c)<\/sup><\/td>11.2<\/td>11.9<\/td>12.2<\/td>5.6<\/td>5.2(c)<\/sup><\/td>6.2<\/td>6.6<\/td>6.8<\/td><\/tr>
M3, \ud074\ub798\uc2a4 1<\/td>8.15<\/td>0.295<\/td>\u2014<\/td>\u2014<\/td>11.5<\/td>12.0<\/td>12.2<\/td>\u2014<\/td>\u2014<\/td>6.4<\/td>6.7<\/td>6.8<\/td><\/tr>
M3, 2\ub4f1\uae09<\/td>8.16<\/td>0.295<\/td>\u2014<\/td>\u2014<\/td>11.5<\/td>12.0<\/td>12.8<\/td>\u2014<\/td>\u2014<\/td>6.4<\/td>6.7<\/td>7.1<\/td><\/tr>
M4<\/td>7.97<\/td>0.288<\/td>\u2014<\/td>9.5(c)<\/sup><\/td>11.2<\/td>12.0<\/td>12.2<\/td>\u2014<\/td>5.3(c)<\/sup><\/td>6.2<\/td>6.7<\/td>6.8<\/td><\/tr>
M7<\/td>7.95<\/td>0.287<\/td>\u2014<\/td>9.5(c)<\/sup><\/td>11.5<\/td>12.2<\/td>12.4<\/td>\u2014<\/td>5.3(c)<\/sup><\/td>6.4<\/td>6.8<\/td>6.9<\/td><\/tr>
M10<\/td>7.88<\/td>0.285\u2022<\/td>\u2014<\/td>\u2014<\/td>11.0<\/td>11.9<\/td>12.4<\/td>\u2014<\/td>\u2014<\/td>6.1<\/td>6.6<\/td>6.9<\/td><\/tr>
M30<\/td>8.01<\/td>0.289<\/td>\u2014<\/td>\u2014<\/td>11.2<\/td>11.7<\/td>12.2<\/td>\u2014<\/td>\u2014<\/td>6.2<\/td>6.5<\/td>6.8<\/td><\/tr>
M33<\/td>8.03<\/td>0.290<\/td>\u2014<\/td>\u2014<\/td>11.0<\/td>11.7<\/td>12.0<\/td>\u2014<\/td>\u2014<\/td>6.1<\/td>6.5<\/td>6.7<\/td><\/tr>
M36<\/td>8.18<\/td>0.296<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
M41<\/td>8.17<\/td>0.295<\/td>\u2014<\/td>9.7<\/td>10.4<\/td>11.2<\/td>\u2014<\/td>\u2014<\/td>5.4<\/td>5.8<\/td>6.2<\/td>\u2014<\/td><\/tr>
M42<\/a><\/td>7.98<\/td>0.288<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
M46<\/td>7.83<\/td>0.283<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
M47<\/td>7.96<\/td>0.288<\/td>10.6<\/td>11.0<\/td>11.9<\/td>\u2014<\/td>12.6<\/td>5.9<\/td>6.1<\/td>6.6<\/td>\u2014<\/td>7.0<\/td><\/tr>
L2<\/td>7.86<\/td>0.284<\/td>\u2014<\/td>\u2014<\/td>14.4<\/td>14.6<\/td>14.8<\/td>\u2014<\/td>\u2014<\/td>8.0<\/td>8.1<\/td>8.2<\/td><\/tr>
L6<\/a><\/td>7.86<\/td>0.284<\/td>11.3<\/td>12.6<\/td>12.6<\/td>13.5<\/td>13.7<\/td>6.3<\/td>7.0<\/td>7.0<\/td>7.5<\/td>7.6<\/td><\/tr>
P2<\/td>7.86<\/td>0.284<\/td>\u2014<\/td>\u2014<\/td>13.7<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>7.6<\/td>\u2014<\/td>\u2014<\/td><\/tr>
P5<\/td>7.80<\/td>0.282<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
P6<\/td>7.85<\/td>0.284<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td>\u2014<\/td><\/tr>
P20<\/a><\/td>7.85<\/td>0.284<\/td>\u2014<\/td>\u2014<\/td>12.8<\/td>13.7<\/td>14.2<\/td>\u2014<\/td>\u2014<\/td>7.1<\/td>7.6<\/td>7.9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n