CARBIDE List 300D General Drilling Operations WorkMaterial Mild Steels, Carbon Steels Alloy Tool Steels, Tool Steels Cast Iron Aluminum Hardness Up to 30 HRC Drilling Speed 200-230 SFM 160-190 SFM 250-350 SFM 370-470 SFM Drill Dia. Speed Feed Speed Feed Speed Feed Speed Feed mm Inch RPM IPR RPM IPR RPM IPR RPM IPR 1 – 20,850 0.0010-0.0014 16,950 0.0010-0.0014 19,400 0.0007-0.0012 40,700 0.0008-0.0013 – 1/16 13,150 0.0015-0.0021 10,700 0.0015-0.0021 12,200 0.0012-0.0017 25,650 0.0012-0.0018 2 – 10,400 0.0022-0.0028 8,500 0.0022-0.0028 9,700 0.0017-0.0023 20,350 0.0017-0.0022 – 3/32 8,750 0.0026-0.0033 7,150 0.0026-0.0033 8,150 0.0022-0.0028 17,100 0.0023-0.0027 3 – 6,950 0.0033-0.0040 5,650 0.0032-0.0040 6,450 0.0032-0.0038 13,550 0.0027-0.0033 – 1/8 6,550 0.0034-0.0042 5,350 0.0033-0.0042 6,100 0.0035-0.0042 12,800 0.0028-0.0036 4 – 5,200 0.0040-0.0050 4,250 0.0040-0.0050 4,850 0.0044-0.0052 10,200 0.0034-0.0044 – 3/16 4,400 0.0048-0.0058 3,550 0.0045-0.0055 4,050 0.0056-0.0064 8,550 0.0040-0.0050 6 – 3,450 0.0060-0.0070 2,830 0.0057-0.0067 3,200 0.0070-0.0080 6,800 0.0051-0.0061 – 1/4 3,300 0.0062-0.0072 2,670 0.0060-0.0070 3,050 0.0070-0.0080 6,400 0.0055-0.0065 8 – 2,600 0.0076-0.0086 2,120 0.0070-0.0080 2,400 0.0080-0.0090 5,100 0.0065-0.0075 – 3/8 2,200 0.0090-0.0100 1,780 0.0082-0.0092 2,000 0.0100-0.0110 4,250 0.0075-0.0085 10 – 2,050 0.0095-0.0105 1,690 0.0087-0.0097 1,900 0.0110-0.0120 4,050 0.0080-0.0090 – 7/16 1,850 0.0105-0.0115 1,520 0.0090-0.0100 1,750 0.0120-0.0130 3,650 0.0090-0.0100 12 – 1,700 0.0115-0.0125 1,400 0.0105-0.0115 1,600 0.0130-0.0140 3,350 0.0095-0.0105 – 1/2 1,600 0.0120-0.0130 1,320 0.0108-0.0118 1,500 0.0133-0.0143 3,150 0.0100-0.0112 General Drilling Operations WorkMaterial Titanium Alloys(Annealed) Inconel, Titanium Alloys Hardened Steels, Prehardened Steels Hardness 30-38 HRC 38-45 HRC Drilling Speed 75-90 SFM 45-50 SFM 135-155 SFM 100-120 SFM Drill Dia. Speed Feed Speed Feed Speed Feed Speed Feed mm Inch RPM IPR RPM IPR RPM IPR RPM IPR 1 – 7,950 0.0008-0.0013 4,650 0.0008-0.0013 14,050 0.0010-0.0014 10,650 0.0008-0.0013 – 1/16 5,000 0.0012-0.0018 2,950 0.0012-0.0018 8,850 0.0015-0.0021 6,700 0.0012-0.0018 2 – 3,950 0.0017-0.0022 2,300 0.0017-0.0022 7,000 0.0022-0.0028 5,300 0.0017-0.0022 – 3/32 3,350 0.0023-0.0027 1,950 0.0023-0.0027 5,900 0.0026-0.0033 4,500 0.0020-0.0028 3 – 2,650 0.0027-0.0033 1,550 0.0027-0.0033 4,700 0.0032-0.0040 3,550 0.0025-0.0033 – 1/8 2,500 0.0028-0.0036 1,450 0.0028-0.0036 4,450 0.0033-0.0042 3,350 0.0025-0.0035 4 – 1,950 0.0031-0.0041 1,160 0.0032-0.0040 3,500 0.0040-0.0050 2,650 0.0033-0.0043 – 3/16 1,650 0.0037-0.0047 970 0.0036-0.0046 2,950 0.0045-0.0055 2,250 0.0040-0.0050 6 – 1,300 0.0048-0.0058 770 0.0048-0.0058 2,350 0.0057-0.0067 1,750 0.0048-0.0058 – 1/4 1,250 0.0049-0.0059 730 0.0049-0.0059 2,200 0.0060-0.0070 1,650 0.0050-0.0060 8 – 1,000 0.0058-0.0068 580 0.0058-0.0068 1,750 0.0070-0.0080 1,300 0.0060-0.0070 – 3/8 830 0.0068-0.0078 480 0.0068-0.0078 1,450 0.0082-0.0092 1,100 0.0070-0.0080 10 – 790 0.0073-0.0083 460 0.0073-0.0083 1,400 0.0087-0.0097 1,050 0.0073-0.0083 – 7/16 710 0.0080-0.0090 410 0.0080-0.0090 1,250 0.0090-0.0100 950 0.0080-0.0090 12 – 660 0.0087-0.0097 380 0.0087-0.0097 1,150 0.0105-0.0115 880 0.0088-0.0098 – 1/2 620 0.0090-0.0100 360 0.0090-0.0100 1,100 0.0108-0.0118 830 0.0093-0.0103 WWW.OSGTOOL.COM Drilling Technical 317