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FRACTIONAL
2 Flute: Square, Double, Stub, Long, Ball, Corner Radius
3 Flute: Square, Ball, Tapered
4 Flute: Square, Double, Stub, Ball, Corner Radius
Tapered: Square, Radius
Series
1, 3, 5, 14, 15, 16,
17, 23, 24, 59
Fractional
Hardness
Flutes
Ap
Ae
Ae
Vc
(sfm)
Diameter (D
1
)
(inch)
Ae x D
1
Ap x D
1
1/64 1/32 1/16 1/8
1/4
3/8
1/2
3/4 1
P
CARBON STEELS
1018, 1040, 1080,
1090, 10L50, 1140,
1212, 12L15, 1525,
1536
≤ 175 Bhn
or
≤ 7 HRc
Profile
460
RPM 112461 56230 28115 14058 7029 4686 3514 2343 1757
(368-552)
Fz 0.00003 0.00006 0.00013 0.0003 0.0008 0.0015 0.0020 0.0024 0.0028
2
≤ 0.50
≤ 1.5
Feed
(ipm)
6.7
6.7
7.3 8.4 11.2 14.1 14.1 11.2 9.8
3
≤ 0.25
≤ 1.5
10.1 10.1 11.0 12.7 16.9 21.1 21.1 16.9 14.8
4
≤ 0.25
≤ 1.5
13.5 13.5 14.6 16.9 22.5 28.1 28.1 22.5 19.7
Slot
335
RPM 81901 40950 20475 10238 5119 3413 2559 1706 1280
(268-402)
Fz 0.00003 0.00006 0.00013 0.0003 0.0008 0.0015 0.0020 0.0024 0.0028
2
1
≤ 1
Feed
(ipm)
4.9
4.9
5.3 6.1
8.2 10.2 10.2 8.2
7.2
3
1
≤ 0.5
7.4
7.4
8.0 9.2 12.3 15.4 15.4 12.3 10.7
4
1
≤ 0.4
9.8
9.8 10.6 12.3 16.4 20.5 20.5 16.4 14.3
ALLOY STEELS
4140, 4150, 4320,
5120, 5150, 8630,
86L20, 50100
≤ 275 Bhn
or
≤ 28 HRc
Profile
335
RPM 81901 40950 20475 10238 5119 3413 2559 1706 1280
(268-402)
Fz 0.00002 0.00005 0.00009 0.0002 0.0006 0.0011 0.0015 0.0018 0.0021
2
≤ 0.50
≤ 1.5
Feed
(ipm)
3.3
4.1
3.7 4.1
6.1
7.5 7.7
6.1
5.4
3
≤ 0.25
≤ 1.5
4.9
6.1
5.5 6.1
9.2 11.3 11.5 9.2
8.1
4
≤ 0.25
≤ 1.5
6.6
8.2
7.4
8.2 12.3 15.0 15.4 12.3 10.7
Slot
245
RPM 59898 29949 14974 7487 3744 2496 1872 1248 936
(196-294)
Fz 0.00002 0.00005 0.00009 0.0002 0.0006 0.0011 0.0015 0.0018 0.0021
2
1
≤ 1
Feed
(ipm)
2.4
3.0
2.7 3.0
4.5
5.5 5.6
4.5
3.9
3
1
≤ 0.5
3.6
4.5
4.0 4.5
6.7
8.2
8.4
6.7
5.9
4
1
≤ 0.4
4.8
6.0
5.4
6.0
9.0 11.0 11.2 9.0
7.9
H
TOOL STEELS
A2, D2, H13, L2, M2,
P20, S7, T15, W2
≤ 250 Bhn
or
≤ 24 HRc
Profile
315
RPM 77011 38506 19253 9626 4813 3209 2407 1604 1203
(252-378)
Fz 0.00002 0.00005 0.00009 0.0002 0.0006 0.0011 0.0015 0.0018 0.0021
2
≤ 0.50
≤ 1.5
Feed
(ipm)
3.1
3.9
3.5 3.9
5.8
7.1 7.2
5.8
5.1
3
≤ 0.25
≤ 1.5
4.6
5.8
5.2 5.8
8.7 10.6 10.8 8.7
7.6
4
≤ 0.25
≤ 1.5
6.2
7.7
6.9
7.7 11.6 14.1 14.4 11.6 10.1
Slot
230
RPM 56230 28115 14058 7029 3514 2343 1757 1171 879
(184-276)
Fz 0.00002 0.00005 0.00009 0.0002 0.0006 0.0011 0.0015 0.0018 0.0021
2
1
≤ 1
Feed
(ipm)
2.2
2.8
2.5 2.8
4.2
5.2 5.3
4.2
3.7
3
1
≤ 0.5
3.4
4.2
3.8 4.2
6.3
7.7
7.9
6.3
5.5
4
1
≤ 0.4
4.5
5.6
5.1
5.6
8.4 10.3 10.5 8.4
7.4
K
CAST IRONS
Gray, Malleable,
Ductile
≤ 220 Bhn
or
≤ 19 HRc
Profile
335
RPM 81901 40950 20475 10238 5119 3413 2559 1706 1280
(268-402)
Fz 0.00003 0.00006 0.00013 0.0003 0.0008 0.0015 0.0020 0.0024 0.0028
2
≤ 0.50
≤ 1.5
Feed
(ipm)
4.9
4.9
5.3 6.1
8.2 10.2 10.2 8.2
7.2
3
≤ 0.25
≤ 1.5
7.4
7.4
8.0 9.2 12.3 15.4 15.4 12.3 10.7
4
≤ 0.25
≤ 1.5
9.8
9.8 10.6 12.3 16.4 20.5 20.5 16.4 14.3
Slot
245
RPM 59898 29949 14974 7487 3744 2496 1872 1248 936
(196-294)
Fz 0.00003 0.00006 0.00013 0.0003 0.0008 0.0015 0.0020 0.0024 0.0028
2
1
≤ 1
Feed
(ipm)
3.6
3.6
3.9 4.5
6.0
7.5 7.5
6.0
5.2
3
1
≤ 0.5
5.4
5.4
5.8 6.7
9.0 11.2 11.2 9.0
7.9
4
1
≤ 0.4
7.2
7.2
7.8
9.0 12.0 15.0 15.0 12.0 10.5
M
STAINLESS STEELS
(FREE MACHINING)
303, 416, 420F, 430F
440F
≤ 275 Bhn
or
≤ 28 HRc
Profile
370
RPM 90458 45229 22614 11307 5654 3769 2827 1885 1413
(296-444)
Fz 0.00002 0.00005 0.00009 0.0002 0.0006 0.0011 0.0015 0.0018 0.0021
2
≤ 0.50
≤ 1.5
Feed
(ipm)
3.6
4.5
4.1 4.5
6.8
8.3 8.5
6.8
5.9
3
≤ 0.25
≤ 1.5
5.4
6.8
6.1 6.8 10.2 12.4 12.7 10.2 8.9
4
≤ 0.25
≤ 1.5
7.2
9.0
8.1
9.0 13.6 16.6 17.0 13.6 11.9
Slot
270
RPM 66010 33005 16502 8251 4126 2750 2063 1375 1031
(216-324)
Fz 0.00002 0.00005 0.00009 0.0002 0.0006 0.0011 0.0015 0.0018 0.0021
2
1
≤ 1
Feed
(ipm)
2.6
3.3
3.0 3.3
5.0
6.1 6.2
5.0
4.3
3
1
≤ 0.5
4.0
5.0
4.5 5.0
7.4
9.1
9.3
7.4
6.5
4
1
≤ 0.4
5.3
6.6
5.9
6.6
9.9 12.1 12.4 9.9
8.7
STAINLESS STEELS
(DIFFICULT)
304, 304L, 316, 316L,
17-4 PH, 15-5, 13-4,
Custom 450
≤ 275 Bhn
or
≤ 28 HRc
Profile
255
RPM 62342 31171 15586 7793 3896 2598 1948 1299 974
(204-306)
Fz 0.00002 0.00004 0.00008 0.0002 0.0005 0.0009 0.0012 0.0014 0.0017
2
≤ 0.50
≤ 1.5
Feed
(ipm)
2.5
2.5
2.5 2.6
3.9
4.7 4.7
3.6
3.3
3
≤ 0.25
≤ 1.5
3.7
3.7
3.7 4.0
5.8
7.0
7.0
5.5
5.0
4
≤ 0.25
≤ 1.5
5.0
5.0
5.0
5.3
7.8
9.4
9.4
7.3
6.6
Slot
185
RPM 45229 22614 11307 5654 2827 1885 1413 942 707
(148-222)
Fz 0.00002 0.00004 0.00008 0.0002 0.0005 0.0009 0.0012 0.0014 0.0017
2
1
≤ 1
Feed
(ipm)
1.8
1.8
1.8 1.9
2.8
3.4 3.4
2.6
2.4
3
1
≤ 0.5
2.7
2.7
2.7 2.9
4.2
5.1
5.1
4.0
3.6
4
1
≤ 0.4
3.6
3.6
3.6
3.8
5.7
6.8
6.8
5.3
4.8
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