PICCO R 050.20: Inserts for internal turning and chamfering next to the bottom of blind holes Grade : IC908 A hard, fine grain substrate with excellent chipping resistance, combined with a new TiAlN PVD coating. Provides high wear and oxidation resistance. Recommended for a very wide range of materials applications and machining conditions. ISO Range - P/M/K: (P15-P30)(M20-M30)(K20-K40) ISO Range - H/S/N: (H10-H20)(S10-S25) Grade or Coating Type: PVD Coating Layers: TiAlN IC228 PVD COATED (P30-P50 K25-K40) For alloy steels, aluminum alloys, austenitic stainless steel, carbon steel, cast steel, copper alloys and Exotic alloys. Suitable for roughing and semi-roughing in low speed / high feed and interrupted cut conditions. High resistance to mechanical & thermal shock.