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DRILLS
DRILLS
311
www.kyocera-sgstool.com
FRACTIONAL
2 Flute Drills
Series
101
Fractional
Hardness
Vc
(sfm)
Diameter (D
1
)
(inch)
1/64
1/32
1/16
1/8
1/4
3/8
1/2
S
SUPER ALLOYS
(NICKEL, COBALT,
IRON BASE)
Inconel 601, 617, 625,
Incoloy 800, Monel 400,
Rene, Waspaloy
≤ 220 Bhn
or
≤ 19 HRc
40
RPM 9779
4890
2445
1222
611
407
306
(32-48)
Fr
0.00010
0.0002
0.0004
0.0008
0.0016
0.0025
0.0033
Feed (ipm)
1.0
1.0
1.0
1.0
1.0
1.0
1.0
≤ 320 Bhn
or
≤ 34 HRc
25
RPM 6112
3056
1528
764
382
255
191
(20-30)
Fr
0.00010
0.0002
0.0004
0.0008
0.0016
0.0024
0.0031
Feed (ipm)
0.6
0.6
0.6
0.6
0.6
0.6
0.6
≤ 425 Bhn
or
≤ 45 HRc
20
RPM 4890
2445
1222
611
306
204
153
(16-24)
Fr
0.00004
0.0001
0.0002
0.0003
0.0007
0.0010
0.0013
Feed (ipm)
0.2
0.2
0.2
0.2
0.2
0.2
0.2
TITANIUM ALLOYS
(DIFFICULT)
Pure Titanium, Ti6Al4V,
Ti6Al2Sn4Zr2Mo,
Ti4Al4Mo2Sn0.5Si,
Ti-6Al4V
≤ 275 Bhn
or
≤ 28 HRc
85
RPM 20781
10390
5195
2598
1299
866
649
(68-102)
Fr
0.00020
0.0004
0.0008
0.0016
0.0032
0.0049
0.0065
Feed (ipm)
4.2
4.2
4.2
4.2
4.2
4.2
4.2
≤ 350 Bhn
or
≤ 38 HRc
65
RPM 15891
7946
3973
1986
993
662
497
(52-78)
Fr
0.00011
0.0002
0.0004
0.0009
0.0017
0.0026
0.0034
Feed (ipm)
1.7
1.7
1.7
1.7
1.7
1.7
1.7
≤ 440 Bhn
or
≤ 47 HRc
55
RPM 13446
6723
3362
1681
840
560
420
(44-66)
Fr
0.00010
0.0002
0.0004
0.0008
0.0015
0.0023
0.0031
Feed (ipm)
1.3
1.3
1.3
1.3
1.3
1.3
1.3
N
ALUMINUM ALLOYS
2017, 2024, 356,
6061, 7075
≤ 80 Bhn
or
≤ 47 HRb
540
RPM 132019
66010
33005
16502
8251
5501
4126
(432-648)
Fr
0.00030
0.0006
0.0012
0.0024
0.0048
0.0073
0.0097
Feed (ipm)
40.0
40.0
40.0
40.0
40.0
40.0
40.0
≤ 150 Bhn
or
≤ 7 HRc
455
RPM 111238
55619
27810
13905
6952
4635
3476
(364-546)
Fr
0.00031
0.0006
0.0013
0.0025
0.0050
0.0076
0.0101
Feed (ipm)
35.0
35.0
35.0
35.0
35.0
35.0
35.0
COPPER ALLOYS
Alum Bronze, C110,
Muntz Brass
≤ 140 Bhn
or
≤ 3 HRc
190
RPM 46451
23226
11613
5806
2903
1935
1452
(152-228)
Fr
0.00015
0.0003
0.0006
0.0012
0.0024
0.0036
0.0048
Feed (ipm)
7.0
7.0
7.0
7.0
7.0
7.0
7.0
≤ 200 Bhn
or
≤ 23 HRc
175
RPM 42784
21392
10696
5348
2674
1783
1337
(140-210)
Fr
0.00015
0.0003
0.0006
0.0012
0.0024
0.0036
0.0048
Feed (ipm)
6.4
6.4
6.4
6.4
6.4
6.4
6.4
PLASTICS
Polycarbonate, PVC
500
RPM 122240
61120
30560
15280
7640
5093
3820
(400-600)
Fr
0.00031
0.0006
0.0012
0.0025
0.0050
0.0075
0.0099
Feed (ipm)
38.0
38.0
38.0
38.0
38.0
38.0
38.0
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)