ISOTURN INSERTS NegativePositive USER GUIDE Selection Guide for Chipformers and Grades ISO P-Steel Finishing Medium Roughing Heavy Tight Tight Tight Tight SF M4PW GN H3P F3P TF R3P H4P NF M3P NR H5P GN PP Open Open Open Open Finishing Medium Tight Tight F3P SM PF M3P SM 14 Open Open First Choice Recommended Carbide Grades Hard Tough IC8150 IC8250 IC8350 IC807 IC830 P05 P10 P15 P20 P25 P30 P35 * For CBN and Ceramic grades for hardend steel see page (237) 124 ISCAR