SPMR Turning Inserts | | Square Inserts | | Insert Grade QX5030 | (ISO P20-P40 M20-M30) CVD Coated. – Medium / rough turning and intermediate cutting of steel / stainless steel. Combination of toughest substrate and alumina coating (MT-TiCN + TiC + AL2O3 + TiN) having superior chipping resistance provide wide coverage. | | | Chip Breaker: PG. Application: Medium.