Table 11. Cutting Speeds and Feeds for Milling Plain Carbon and Alloy Steels
End Milling
Face Milling
Slit Milling
HSS
HSS
Uncoated Carbide Coated Carbide Uncoated Carbide Coated Carbide Uncoated Carbide Coated Carbide
Brinell Hardness Number a
f = feed (0.001 in/tooth), s = speed (ft/min) Metric Units: f 3 25.4 = mm/rev, s 3 0.3048 = m/min
Speed (fpm)
Material
Opt. Avg. Opt.
Avg. Opt.
Avg. Opt.
Avg. Opt.
Avg. Opt.
Avg. Opt.
Avg. 20 830
7 45 7 35
4 125 4 100
7 465
4 735
7 800
4 1050
39 225
20 335
39 415 39 215
20 685 20 405
39 265
20 495
39 525
f s f s
100-150 140
Free-machining plain carbon steels (resulfurized): 1212, 1213, 1215
{
150-200 130 100-150 130 150-200 115 175-225 115
4 7
4
7
4 39 720 140
20 39 220 195
20 39 365 170
20 39 350 245
20
f s 730
(Resulfurized): 1108, 1109, 1115, 1117, 1118, 1120, 1126, 1211 {
85 325
565 465
495
f s
7 30
4 85
39 185
20 350
275-325 325-375 375-425
70 45 35
(Resulfurized): 1132, 1137, 1139, 1140, 1144, 1146, 1151 {
f s
7 25
4 70
7 210
4 435
7 300
4 560
39 90
20 170
39 175
20 330
39 90
20 235
39 135
20 325
100-150 140 150-200 130 200-250 110
f s f s f s f s f s
7 35 7 30 7 45 7 35 7 30
4 100
39 215 39 185 39 415 39 215 39 185
20 405 20 350 20 685 20 405 20 350
(Leaded): 11L17, 11L18, 12L13, 12L14
{
4 85
4 125 4 100
7 465
4 735
7 800
4 1050
39 225
20 335
39 265
20 495
39 525
20 830
100-125 110
Plain carbon steels: 1006, 1008, 1009, 1010, 1012, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1513, 1514
125-175 110
175-225 225-275
90 65
4 85
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