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DRILLS
DRILLS
327
www.kyocera-sgstool.com
FRACTIONAL
Combined Drill & Countersink
Series
301
Fractional
Hardness
Vc
(sfm)
Diameter (D
1
)
(inch)
1/32
5/64
1/8
3/16
7/32
S
SUPER ALLOYS
(NICKEL, COBALT,
IRON BASE)
Inconel 601, 617, 625,
Incoloy 800, Monel 400,
Rene, Waspaloy
≤ 220 Bhn
or
≤ 19 HRc
40
RPM
1222
815
489
349
306
(32-48)
Fr
0.00036
0.0005
0.0009
0.0013
0.0014
Feed (ipm)
0.4
0.4
0.4
0.4
0.4
≤ 320 Bhn
or
≤ 34 HRc
25
RPM
764
509
306
218
191
(20-30)
Fr
0.00033
0.0005
0.0008
0.0011
0.0013
Feed (ipm)
0.3
0.3
0.3
0.3
0.3
≤ 425 Bhn
or
≤ 45 HRc
20
RPM
611
407
244
175
153
(16-24)
Fr
0.00016
0.0002
0.0004
0.0006
0.0007
Feed (ipm)
0.1
0.1
0.1
0.1
0.1
TITANIUM ALLOYS
Pure Titanium, Ti6Al4V,
Ti6Al2Sn4Zr2Mo,
Ti4Al4Mo2Sn0.5Si,
Ti-6Al4V
≤ 275 Bhn
or
≤ 28 HRc
85
RPM
2598
1732
1039
742
649
(68-102)
Fr
0.00064
0.0010
0.0016
0.0022
0.0026
Feed (ipm)
1.7
1.7
1.7
1.7
1.7
≤ 350 Bhn
or
≤ 38 HRc
65
RPM
1986
1324
795
568
497
(52-78)
Fr
0.00036
0.0005
0.0009
0.0013
0.0014
Feed (ipm)
0.7
0.7
0.7
0.7
0.7
≤ 440 Bhn
or
≤ 47 HRc
55
RPM
1681
1121
672
480
420
(44-66)
Fr
0.00032
0.0005
0.0008
0.0011
0.0013
Feed (ipm)
0.5
0.5
0.5
0.5
0.5
N
ALUMINUM ALLOYS
2017, 2024, 356,
6061, 7075
≤ 80 Bhn
or
≤ 47 HRb
540
RPM
16502
11002
6601
4715
4126
(432-648)
Fr
0.00100
0.0015
0.0025
0.0035
0.0040
Feed (ipm)
16.5
16.5
16.5
16.5
16.5
≤ 150 Bhn
or
≤ 7 HRc
455
RPM
13905
9270
5562
3973
3476
(364-546)
Fr
0.00100
0.0015
0.0025
0.0035
0.0040
Feed (ipm)
13.9
13.9
13.9
13.9
13.9
COPPER ALLOYS
Alum Bronze, C110,
Muntz Brass
≤ 140 Bhn
or
≤ 3 HRc
190
RPM
5806
3871
2323
1659
1452
(152-228)
Fr
0.00048
0.0007
0.0012
0.0017
0.0019
Feed (ipm)
2.8
2.8
2.8
2.8
2.8
≤ 200 Bhn
or
≤ 23 HRc
175
RPM
5348
3565
2139
1528
1337
(140-210)
Fr
0.00048
0.0007
0.0012
0.0017
0.0019
Feed (ipm)
2.6
2.6
2.6
2.6
2.6
PLASTICS
Polycarbonate, PVC
500
RPM
15280
10187
6112
4366
3820
(400-600)
Fr
0.00100
0.0015
0.0025
0.0035
0.0040
Feed (ipm)
15.3
15.3
15.3
15.3
15.3
Bhn (Brinell) HRc (Rockwell C) HRb (Rockwell B)
rpm = Vc x 3.82 / D
1
ipm = Fr x rpm
reduce speed and feed 30 percent when using uncoated drills
reduce speed and feed for materials harder than listed
refer to the KYOCERA SGS Tool Wizard
®
for complete technical information (www.kyocera-sgstool.com)