Table 1. Cutting Speeds and Feeds for Turning Plain Carbon and Alloy Steels Table 1. (Continued) Cutting Speeds and Feeds for Turning Plain Carbon and Alloy Steels
Tool Material Coated Carbide
Uncoated Carbide
Ceramic
HSS
Hard
Tough
Hard
Tough
Hard
Tough
Cermet
Brinell Hardness Number a 175-225 225-275 275-325 325-375 375-425
f = feed (0.001 in/rev), s = speed (ft/min) Metric Units: f 3 25.4 = mm/rev, s 3 0.3048 = m/min Opt. Avg. Opt. Avg. Opt. Avg. Opt. Avg. Opt. Avg. Opt. Avg. Opt. Avg.
Material AISI/SAE Designation
Speed (fpm)
17 745 17 615
8 935 8 815
36 345 36 300
17 470 17 405
28 915 17 865
13 1130
28 785 28 755
13 1110
15 1795 13 1400
8 2680 7 1965
15 1485 13 1170
8 2215 7 1640
7 1490
3 1815
f s f s
125-175 100
85 70 60 40 30
8 960
13 960
Plain carbon steels (continued) : 1027, 1030, 1033, 1035, 1036, 1037, 1038, 1039, 1040, 1041, 1042, 1043, 1045, 1046, 1048, 1049, 1050, 1052, 1524, 1526, 1527, 1541
f s
17 515
8 685
36 235
17 340
17 720
8 805
28 650
13 810
10 1430
5 1745
10 1070
5 1305
125-175 100
f s f s
17 730 17 615
8 990 8 815
36 300 36 300
17 430 17 405
17 1090
8 1410
28 780 28 755
13 1105
15 1610 13 1400
8 2780 7 1965
15 1345 13 1170
8 2005 7 1640
7 1355 7 1365
3 1695 3 1695
175-225
80
17 865
8 960
13 960
Plain carbon steels (continued) : 1055, 1060, 1064, 1065, 1070, 1074, 1078, 1080, 1084, 1086, 1090, 1095, 1548, 1551, 1552, 1561, 1566
225-275 275-325 325-375 375-425
65 50 35 30
f s
17 515
8 685
36 235
17 340
17 720
8 805
28 650
13 810
10 1430
5 1745
10 1070
5 1305
175-200 110
17 525 17 355 17 330
8 705 8 445 8 440
36 235 36 140 36 125
17 320 17 200 17 175
17 505 17 630 17 585
8 525 8 850 8 790
28 685 28 455 28 125
13 960 13 650 13 220
15 1490 10 1230 8 1200
8 2220 5 1510 4 1320
15 1190
8 1780 5 1210 4 1060
7 1040
3 1310
f s f s
200-250
90
10 990 8 960
7 715 7 575
3 915 3 740
Free-machining alloy steels, (resulfurized): 4140, 4150
250-300 300-375 375-425
65 50 40
f s
Made with FlippingBook - Share PDF online