CARBIDE
List 300D
General Drilling Operations Work Material
Alloy Tool Steels, Tool Steels
Mild Steels, Carbon Steels
Cast Iron
Aluminum
Hardness
Up to 30 HRC 160-190 SFM
Drilling Speed
200-230 SFM
250-350 SFM
370-470 SFM
Drill Dia.
Speed RPM
Feed IPR
Speed RPM
Feed IPR
Speed RPM
Feed IPR
Speed RPM
Feed IPR
mm Inch 1 -
20,850 0.0010-0.0014 16,950 0.0010-0.0014 25,000 0.0007-0.0012 25,000 0.0008-0.0013 - 1/16 13,150 0.0015-0.0021 10,700 0.0015-0.0021 18,340 0.0012-0.0017 25,000 0.0012-0.0018 2 - 10,400 0.0022-0.0028 8,500 0.0022-0.0028 14,550 0.0017-0.0023 20,350 0.0017-0.0022 - 3/32 8,750 0.0026-0.0033 7,150 0.0026-0.0033 12,220 0.0022-0.0028 17,100 0.0023-0.0027 3 - 6,950 0.0033-0.0040 5,650 0.0032-0.0040 9,700 0.0032-0.0038 13,550 0.0027-0.0033 - 1/8 6,550 0.0034-0.0042 5,350 0.0033-0.0042 9,170 0.0035-0.0042 12,800 0.0028-0.0036 4 - 5,200 0.0040-0.0050 4,250 0.0040-0.0050 7,280 0.0044-0.0052 10,200 0.0034-0.0044 - 3/16 4,400 0.0048-0.0058 3,550 0.0045-0.0055 6,110 0.0056-0.0064 8,550 0.0040-0.0050 6 - 3,450 0.0060-0.0070 2,830 0.0057-0.0067 4,850 0.0070-0.0080 6,800 0.0051-0.0061 - 1/4 3,300 0.0062-0.0072 2,670 0.0060-0.0070 4,580 0.0070-0.0080 6,400 0.0055-0.0065 8 - 2,600 0.0076-0.0086 2,120 0.0070-0.0080 3,640 0.0080-0.0090 5,100 0.0065-0.0075 - 3/8 2,200 0.0090-0.0100 1,780 0.0082-0.0092 3,060 0.0100-0.0110 4,250 0.0075-0.0085 10 - 2,050 0.0095-0.0105 1,690 0.0087-0.0097 2,910 0.0110-0.0120 4,050 0.0080-0.0090 - 7/16 1,850 0.0105-0.0115 1,520 0.0090-0.0100 2,620 0.0120-0.0130 3,650 0.0090-0.0100 12 - 1,700 0.0115-0.0125 1,400 0.0105-0.0115 2,430 0.0130-0.0140 3,350 0.0095-0.0105 - 1/2 1,600 0.0120-0.0130 1,320 0.0108-0.0118 2,290 0.0133-0.0143 3,150 0.0100-0.0112
General Drilling Operations Work Material
Hardened Steels, Prehardened Steels
Titanium Alloys (Annealed)
Inconel, Titanium Alloys
Hardness
30-38 HRC 135-155 SFM
38-45 HRC
Drilling Speed
75-90 SFM
45-50 SFM
100-120 SFM
Drill Dia.
Speed RPM
Feed IPR
Speed RPM
Feed IPR
Speed RPM
Feed IPR
Speed RPM
Feed IPR
mm Inch 1 -
7,950 5,000 3,950 3,350 2,650 2,500 1,950 1,650 1,300 1,250 1,000
0.0008-0.0013 0.0012-0.0018 0.0017-0.0022 0.0023-0.0027 0.0027-0.0033 0.0028-0.0036 0.0031-0.0041 0.0037-0.0047 0.0048-0.0058 0.0049-0.0059 0.0058-0.0068 0.0068-0.0078 0.0073-0.0083 0.0080-0.0090 0.0087-0.0097 0.0090-0.0100
4,650 2,950 2,300 1,950 1,550 1,450 1,160
0.0008-0.0013 14,050 0.0010-0.0014 10,650 0.0008-0.0013
-
1/16
0.0012-0.0018 0.0017-0.0022 0.0023-0.0027 0.0027-0.0033 0.0028-0.0036 0.0032-0.0040 0.0036-0.0046 0.0048-0.0058 0.0049-0.0059 0.0058-0.0068 0.0068-0.0078 0.0073-0.0083 0.0080-0.0090 0.0087-0.0097 0.0090-0.0100
8,850 7,000 5,900 4,700 4,450 3,500 2,950 2,350 2,200 1,750 1,450 1,400 1,250 1,150 1,100
0.0015-0.0021 0.0022-0.0028 0.0026-0.0033 0.0032-0.0040 0.0033-0.0042 0.0040-0.0050 0.0045-0.0055 0.0057-0.0067 0.0060-0.0070 0.0070-0.0080 0.0082-0.0092 0.0087-0.0097 0.0090-0.0100 0.0105-0.0115 0.0108-0.0118
6,700 5,300 4,500 3,550 3,350 2,650 2,250 1,750 1,650 1,300 1,100 1,050
0.0012-0.0018 0.0017-0.0022 0.0020-0.0028 0.0025-0.0033 0.0025-0.0035 0.0033-0.0043 0.0040-0.0050 0.0048-0.0058 0.0050-0.0060 0.0060-0.0070 0.0070-0.0080 0.0073-0.0083 0.0080-0.0090 0.0088-0.0098 0.0093-0.0103
2
-
-
3/32
3
-
-
1/8
4
-
-
3/16
970 770 730 580 480 460 410 380 360
6
-
-
1/4
8
-
-
3/8
830 790 710 660 620
10
-
-
7/16
950 880 830
12
-
-
1/2
341
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Drilling Technical
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