Practical Data for Metallurgists - Timken
Practical Data for Metallurgists - Timken
Practical Data for Metallurgists - Timken
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CRITICAL TEMPERATURES AND Ms/Mf POINTS – continued<br />
SAE<br />
Heating (°F) Cooling (°F) Quench SAE<br />
No. Ac1 Ac3 Ar3 Ar1 Temp °F Ms (°F) Mf (°F) No.<br />
51100 1385 1415 1320 1300 ............. ............. ............. 51100<br />
52100 1340 1415 1320 1270 1560 345 .............<br />
52100 1650 305 ............. 52100<br />
52100 1740 260 ............. 52100<br />
6117 1400 1560 1430 1270 1650 305 ............. 6117<br />
6120 1410 1530 1440 1300 1740 260 ............. 6120<br />
6140 ............. ............. ............. ............. 1550 620 460 6140<br />
6150 1380 1450 1375 1275 ............. ............. ............. 6150<br />
8615 1360 1550 1455 1265 ............. ............. ............. 8615<br />
8620 1350 1525 1400 1200 ............. ............. ............. 8620<br />
8630 1350 1480 1340 1210 1600 690 540 8630<br />
8640 1350 1435 1275 1170 ............. ............. ............ 8640<br />
8650 1325 1390 1240 1195 ............. ............. ............ 8650<br />
8695 (2) ............. ............. ............. ............. 1500 275 ............ 8695 (2)<br />
90<br />
8720 1380 1520 1400 1200 ............. ............. ............ 8720<br />
8740 1350 1450 1300 1180 ............. ............. ............ 8740<br />
8750 1350 1410 1265 1190 ............. ............. ............ 8750<br />
9310 1315 1490 1305 830/1080 ............. ............. ............ 9310<br />
9317 1300 1455 1290 800 ............. ............. ............ 9317<br />
9395 (2) ............. ............. ............. ............. 1700 170 ............ 9395 (2)<br />
9442 1350 1435 1280 1190 1575 620 410 9442<br />
9 Cr 1 Mo 1515 1645 1430 1350 ............. ............. ............ 9 Cr 1 Mo<br />
17-22-A ® 1370 1480 1350 1245 ............. ............. ............ 17-22-A ®<br />
17-22-AS ® 1440 1600 1460 1280 ............. ............. ............ 17-22-AS ®<br />
17-22-AV ® 1435 1700 1525 1230 ............. ............. ............ 17-22-AV ®<br />
Graph Mo ® 1380 1415 1365 1275 1450 410 ............ Graph Mo ®<br />
Graph Air ® 1275 1415 1260 1150 1460 325 ............ Graph Air ®<br />
(2) Represents the case of 8600 and 9300 grades of carburizing steels, respectively.