ISOTURN INSERTS USER GUIDE ISO-H Hard Materials Turning IB10H (fine grain 0.5µm) Uncoated, fine grain PCBN grade. Application Used at medium cutting speed, continuous or light interrupted cut on hardened steels. Provides excellentsurface finish. Workpiece hardness range: 50-65 HRC.CBN Content53.5% Binder TiN-Al IB20H Uncoated, general purpose PCBN grade. Good balance between wear and impact resistance. Composed of both fine and medium CBN grain sizes. ApplicationContinuous to medium interrupted cut on hardened steel. CBN Content 65% Binder TiN-Al IB10HC TiN coated, PCBN grade with excellent wear resistance. Composed of very fine grain CBN. Application Medium to high speed, continuous machining on hardened steel. CBN Content 53.5% Binder TiN-Al IB25HC Ti (C, N, O) coated grade, composed of medium CBN grain. Application High speed, continuous to light interrupted machining. CBN Content 75% Binder TiN-Al IB25HA Ti (C,N,O) coated grade composed of medium CBN grain. Application General purpose machining on hardened steel. CBN Content 65% Binder TiN-Al ISO-S IB05S Super fine, CBN grain with a very high CBN content. Application Turning on ferrous sintered metals. CBN Content 95% Binder Co-Al-WC IB10S A very high CBN content grade, featuring high hardness. Application Turning on ferrous sintered metals such as valve seats and Ti alloys components. CBN Content 95% Binder Co-Al-WC 239