Standard Drill Recommendations

Aluminum/ Aluminum Alloys300-600.0008.003.007.012.015 Aluminum Alloyed Si > 10%150-400.0008.002.006.010.012 Soft Cast Irons200-300.001.003.005.010.012 Medium Cast Irons125-225.001.003.005.008.010 Malleable Cast Irons65-200.0005.002.004.007.010 Brass200-300.0007.002.003.004.006 Bronze150-250.0007.002.003.004.006 Coppers/ Copper Alloys150-300.001.003.006.010.012 Magnesium300-600.001.003.007.012.015 Nickel Alloys75-200.001.003.005.009.012 Free Machining Stainless Steels100-150.001.003.005.008.012 Work Hardening Stainless Steels50-100.0005.002.004.006.010 Low Carbon Steels150-300.001.002.004.007.012 Medium Carbon Steels100-200.001.002.003.006.010 High Tensile (35-40 Rc) Steels75-150.001.002.003.004.005 High Tensile (40-45 Rc) Steels50-100.0007.001.002.003.004 High Tensile (45 Rc+) Steels25-75.0005.0007.001.002.003 Tool Steels40-100.001.0015.003.005.008 Soft Titanium80-125.001.002.004.006.010 Titanium Alloys Hard Titanium40-100.0007.001.002.005.008