PARTING PARTING SELECTION GUIDE Main Chipformers Recommended Feed Workpiece Hardness C HF MF J LF UT 0.01 0.03 0.05 0.07 0.09 0.11 0.13 0.15 0.17 0.19 0.21 0.23 0.25 0.30 0.35 0.40 Feed mm/rev HF MF LF C J UT Selection of Chipformers for Various Workpiece Materials Inserts Alloy Steel AusteniticStainless High Temp. NonferrousAlloysMaterialsCast Iron HF 4 8 8 8 4 C 4 8 4 4(IC20 only)(IC20 only)4 High W 4 8 8 8 4 C-jet(Coolant) 4 4 4 8 8 4 MF 4 Medium to 4 8 4 high feed JT 4 4 4 8 4 Feed J 4 4 4 4 8 Z 4 4 4 4 8 LFT 4 4 4 8 8 LF 4 4 4 8 8 Low UT 4 8 8 8 8 P 4 4 8 4 8 A 8 8 8 4 8 4 First choice 466 ISCAR