Page 86 of Bore Line Hole Making by Ingersoll Cutting Tools
i standard grade descriptions grade number unc uncoated industry class c-1/c-2 iso rating k20-k50 m20-m40 p20-p35 k15-k35 p20-p30 k20-k50 m25-m40 p25-p45 k20-k30 m20-m40 p20-p40 p10-p30 m10-m30 k25-k40 m30-m40 k50-p01 k25-k40 m30-m40 coating none workpiece materials cast iron aluminum non-ferrous materials high-temp alloys steels in30m in40p c-5/c-6 c-1/c-3 c-5/c-7 c-2/c-1 c-5/c-6 none mt-cvd al2o3 cvd chemical vapor deposition in6515 cast iron steels in6530 mt-cvd al2o3 pvd ticn pvd ticn ticn-tin pvd ticn-tin pvd tialn tiain cast iron steels stainless high-temp alloys in1030 c-1/c-2 cast iron aluminum stainless titanium in1040 pvd physical vapor deposition c-5/c-7 steels stainless in1505 c-1/c-7 cast iron steels stainless high-temp alloys in1530 in2005 c-1/c-5 c-1/c-8 steels stainless titanium high-temp alloys cast iron steels stainless high-temp alloys in2030 c-1/c-5 cast iron steels stainless high-temp alloys 12 86
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