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