IR/L-UN : Internal American UN, Full Profile (UN, UNC, UNF, UNEF), laydown threading inserts. IR/L - Ground periphery and rake, IRB - with a chipformer and peripherally ground, IRM - With a chipformer. Application: general industry.

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