Table 17. Speeds and Feeds for Drilling, Reaming, and Threading Plain Carbon and Alloy Steels
Drilling Reaming
Drilling
Reaming
Threading
Indexable Insert Coated Carbide
HSS
HSS
HSS
HSS
Brinell Hardness Number
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.
Speed (fpm)
Material
f s f s f s
21 55 16 50
11 125
8 310 8 370 8 365
4 620 4 740 4 735
36 140 27 105
18 185 14 115
83 140
20 185 20 115
100-150 120 150-200 125 100-150 110 150-200 120 175-225 100 275-325 70 325-375 45 375-425 35 100-150 130 150-200 120 200-250 90 100-125 100 125-175 90 175-225 70 225-275 60 125-175 90 175-225 75 225-275 60 275-325 50 325-375 35 375-425 25
80 80 75 80 65 45 30 20 85 80 60 65 60 45 40 60 50 40 30 20 15
Free-machining plain carbon steels (Resulfurized): 1212, 1213, 1215 (Resulfurized): 1108, 1109, 1115, 1117, 1118, 1120, 1126, 1211
{
8 95
83 90
{
(Resulfurized): 1132, 1137, 1139, 1140, 1144, 1146, 1151
{
(Leaded): 11L17, 11L18, 12L13, 12L14
{
f s f s
8 365 8 310 8 365
4 735 4 620 4 735
21 55
11 125
36 140
18 185
83 140
20 185
Plain carbon steels: 1006, 1008, 1009, 1010, 1012, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1513, 1514
{
f s
Plain carbon steels : 1027, 1030, 1033, 1035, 1036, 1037, 1038, 1039, 1040, 1041, 1042, 1043, 1045, 1046, 1048, 1049, 1050, 1052, 1524, 1526, 1527, 1541
f s
8 365
4 735
{
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