Choosing insert grade, coating, and chip breaker
Insert grade classification ISO: P (steel, C5-C8, TiCN+Al2O3+TiN CVD), M (stainless, C4-C6, TiAlN PVD), K (cast iron/Al, C2-C4, uncoated/TiN), N (non-ferrous, C1-C3, uncoated/diamond), S (superalloys, C3-C5, TiAlN PVD). Chip breaker: finish feed 0.05-0.2, medium 0.2-0.5, rough 0.4-1.0 mm/rev.