NegativePositive ISOTURN INSERTS USER GUIDE Selection Guide for Chipformers and Grades ISO S-High Temp. Alloys Finishing Medium Tight Tight F3M TF F3S M3M EM-M VL PP Open Open Finishing Medium Tight Tight SM M3M PF SM F3M 14 Open Open First Choice Recommended Carbide Grades Hard Tough IC804 IC806 IC830 S05 S10 S15 S20 S25 S30 S35 * For CBN and Ceramic grades for hardend steel see page (237) 127