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Speed & Feed Recommendations
Series Hardness Vc Diameter (D1)
301 BRINELL (SFM) (inch)
Fractional
200 275 1/32 3/64 5/64 1/8 3/16 7/32
(220-330) 33616 22411
RPM 0.0003 0.0005 13446 8404 5603 4802
150 Fr 10.1 11.2
(120-180) 18336 12224 0.0007 0.0012 0.0018 0.0021
Feed (IPM) 0.0003 0.0004
105 RPM 9.4 10.1 10.1 10.1
(84-126) Fr 5.5 4.9
C ARBON STEELS 12835 8557 7334 4584 3056 2619
230 Feed (IPM) 0.0002 0.0003
P 1018, 1040, 1080, 1090, > 200 (184-276) RPM 2.6 0.0007 0.0011 0.0016 0.0019
10L50, 1140, 1212, 12L15, 300 Fz 2.6 18743
1525, 1536 140 28115 0.0004
(112-168) Feed (IPM) 0.0003 7.5 5.1 5.0 4.9 5.0
RPM 11409
90 Fz 8.4 0.0004 5134 3209 2139 1834
(72-108) 17114 4.6
> 300 Feed (IPM) 0.0003 7334 0.0005 0.0007 0.0011 0.0013
420 85 RPM 0.0003
(68-102) Fr 5.1 2.2
11002 6927 2.6 2.2 2.4 2.4
50 Feed (IPM) 0.0002 0.0003
(40-60) RPM 2.1 11246 7029 4686 4016
Fr 2.2 4075
275 40 10390 0.0002 0.0006 0.0010 0.0015 0.0018
(32-48) Feed (IPM) 0.0002 0.8
RPM 3260 6.7 7.0 7.0 7.2
250 Fr 2.1 0.0002
ALLOY STEELS (200-300) 6112 0.7 6845 4278 2852 2445
P 4140, 4150, 4320, 5120, Feed (IPM) 0.0001 20373
> 275 185 RPM 0.6 0.0005 0.0006 0.0010 0.0015 0.0018
5150, 8630, 86L20, 50100 375 (148-222) Fr 4890 10.2
0.0001 15076
155 Feed (IPM) 0.5 0.0005 4.1 4.3 4.3 4.4
(124-186) RPM 30560 7.5
Fr 0.0004 12631 4401 2750 1834 1572
110 12.2 0.0003
> 375 (88-132) Feed (IPM) 22614 3.8 0.0004 0.0007 0.0010 0.0012
450 RPM 0.0003 8964
Fr 6.8 0.0003
18947 2.7 1.8 1.9 1.8 1.9
Feed (IPM) 0.0002
RPM 3.8 4156 2598 1732 1484
Fr 13446
250 0.0002 0.0004 0.0007 0.0010 0.0012
> 250 Feed (IPM) 2.7
330 RPM 1.7 1.8 1.7 1.8
> 330 Fr
TOOL STEELS 450 2445 1528 1019 873
P A2, D2, H13, L2, M2, Feed (IPM)
RPM 0.0002 0.0004 0.0006 0.0007
P20, S7, T15, W2 Fr
0.5 0.6 0.6 0.6
Feed (IPM)
1956 1222 815 699
0.0002 0.0004 0.0006 0.0007
0.4 0.5 0.5 0.5
12224 7640 5093 4366
200 0.0009 0.0014 0.0021 0.0025
> 200
K Cast IronS 330 11.0 10.7 10.7 10.9
Gray, Malleable, Ductile
9046 5654 3769 3231
0.0009 0.0014 0.0021 0.0024
8.1 7.9 7.9 7.8
7579 4737 3158 2707
< 250 0.0004 0.0006 0.0009 0.0011
> 250
STAINLESS STEELS 330 3.0 2.8 2.8 3.0
M (Free MachiNIng)
5379 3362 2241 1921
303, 416, 420F, 430F 440F
0.0004 0.0006 0.0009 0.0011
2.2 2.0 2.0 2.1
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DRILLS DRILLS 225
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