Global Catalog Metric 8-16-23 web - Flipbook - Page 254
FRACTIONAL
Combined Drill & Countersink
Series
301
Fractional
Hardness
≤ 175 Bhn
or
≤ 7 HRc
CARBON STEELS
1018, 1040, 1080, 1090,
10L50, 1140, 1212,
12L15, 1525, 1536
≤ 300 Bhn
or
≤ 32 HRc
≤ 425 Bhn
or
≤ 45 HRc
≤ 275 Bhn
or
≤ 28 HRc
265
(212-318)
125
(100-150)
85
(68-102)
230
(184-276)
P
ALLOY STEELS
4140, 4150, 4320, 5120,
5150, 8630, 86L20, 50100
≤ 375 Bhn
or
≤ 40 HRc
≤ 425 Bhn
or
≤ 45 HRc
TOOL STEELS
A2, D2, H13, L2, M2,
P20, S7, T15, W2
STAINLESS STEELS
(FREE MACHINING)
303, 416, 420F, 430F 440F
≤ 250 Bhn
or
≤ 24 HRc
≤ 375 Bhn
or
≤ 40 HRc
≤ 250 Bhn
or
≤ 24 HRc
≤ 330 Bhn
or
≤ 36 HRc
M
STAINLESS STEELS
(DIFFICULT)
304, 316, 321, 13-8 PH,
15-5PH, 17-4 PH,
Custom 450
K
CAST IRONS
Gray, Malleable,
Ductile
≤ 275 Bhn
or
≤ 28 HRc
≤ 375 Bhn
or
≤ 40 HRc
≤ 220 Bhn
or
≤ 19 HRc
≤ 330 Bhn
or
≤ 36 HRc
DC • in
Vc
(sfm)
145
(116-174)
60
(48-72)
85
(68-102)
55
(44-66)
210
(168-252)
110
(88-132)
65
(52-78)
55
(44-66)
280
(224-336)
250
(200-300)
1/32
5/64
1/8
3/16
7/32
RPM
8098
5399
3239
2314
2025
Fr
0.00068
0.0010
0.0017
0.0024
0.0027
Feed (ipm)
5.5
5.5
5.5
5.5
5.5
RPM
3820
2547
1528
1091
955
Fr
0.00065
0.0010
0.0016
0.0023
0.0026
Feed (ipm)
2.5
2.5
2.5
2.5
2.5
RPM
2598
1732
1039
742
649
Fr
0.00038
0.0006
0.0010
0.0013
0.0015
Feed (ipm)
1.0
1.0
1.0
1.0
1.0
RPM
7029
4686
2812
2008
1757
Fr
0.00064
0.0010
0.0016
0.0022
0.0026
Feed (ipm)
4.5
4.5
4.5
4.5
4.5
RPM
4431
2954
1772
1266
1108
Fr
0.00059
0.0009
0.0015
0.0021
0.0023
Feed (ipm)
2.6
2.6
2.6
2.6
2.6
RPM
1834
1222
733
524
458
Fr
0.00027
0.0004
0.0007
0.0010
0.0011
Feed (ipm)
0.5
0.5
0.5
0.5
0.5
RPM
2598
1732
1039
742
649
Fr
0.00035
0.0005
0.0009
0.0012
0.0014
Feed (ipm)
0.9
0.9
0.9
0.9
0.9
RPM
1681
1121
672
480
420
Fr
0.00016
0.0002
0.0004
0.0006
0.0006
Feed (ipm)
0.3
0.3
0.3
0.3
0.3
RPM
6418
4278
2567
1834
1604
Fr
0.00048
0.0007
0.0012
0.0017
0.0019
Feed (ipm)
3.1
3.1
3.1
3.1
3.1
RPM
3362
2241
1345
960
840
Fr
0.00028
0.0004
0.0007
0.0010
0.0011
Feed (ipm)
0.9
0.9
0.9
0.9
0.9
RPM
1986
1324
795
568
497
Fr
0.00036
0.0005
0.0009
0.0013
0.0014
Feed (ipm)
0.7
0.7
0.7
0.7
0.7
RPM
1681
1121
672
480
420
0.0013
Fr
0.00032
0.0005
0.0008
0.0011
Feed (ipm)
0.5
0.5
0.5
0.5
0.5
RPM
8557
5705
3423
2445
2139
0.0034
Fr
0.00084
0.0013
0.0021
0.0029
Feed (ipm)
7.2
7.2
7.2
7.2
7.2
RPM
7640
5093
3056
2183
1910
Fr
0.00084
0.0013
0.0021
0.0029
0.0034
Feed (ipm)
6.4
6.4
6.4
6.4
6.4
continued on next page
254
DRILLS
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