USER GUIDE ISOTURN INSERTS CBN Grades Grades & Applications for Hardened Steel New Composition Material Grade (% CBN) Features and Applications Wear IB10H 53.5 Excellent surface finish. Super fine grain. Continuous cut. Resistance Composed of both fine and medium CBN grains. IB20H 65 General-purpose grade for continuous to light interrupted machining. ISO-H Finishing on hardened steel (45-65 HRC) and IB50 50 UNCOATED nodular cast iron. Continuous cutting. Semi-finishing on hardened steel (45-65 HRC) IB55 60 and nodular cast iron. Interrupted cutting. Toughness Hardened Steels Wear TiN coated grade very fine CBN grain. IB10HC 53.5 Resistance High speed continuous machining. Ti (C, N, O) coated CBN grade. High speed IB25HC 75 continuous to interrupted machining. ISO-H COATED Ti (C, N) coated CBN grade. High toughness. General purpose coated grade. Available with two types of chipbreakers (HF, HM). IB25HA 65 Toughness Grades & Applications for Cast Iron New Composition Material Grade (% CBN) Features and Applications Wear Hardened steel and cast iron Resistance (>45 HRC). Grey cast iron and nodular cast irons. Powdered IB85 85 metal/sintered iron. Super alloys/heat resistant alloys. Sintered Cast Iron & tungsten carbide >17% Co. High speed cutting of cast iron. ISO-K Hard Metal High speed cutting on cast iron, cutting cemented IB90 90 tungsten carbide, sintered metal and super alloy. Toughness Grades & Applications for High Temperature Alloys New Composition Material Grade (% CBN) Features and Applications Wear Super fine grain CBN for machining ferrous sintered metals. IB05S 95 Resistance Exotic For machining valve seats, sintered metals and Ti alloys. ISO-S IB10S 95 Materials Cutting cemented tungsten carbide, sintered metal and super alloy. IB90 90 Toughness 241