... tungsten carbide strips, rods,rings,inserts, shims, wear parts, drawing dies,drilling bits,cold forging dies,bars, balls ... VC, TaC, NbC, BC4, etcNumber and performance of cutting blade series GradeISO CodeDensity g/cm3Hardness HRATRSN/mm2Performance & application ... cast iron.Other grade of cutting blade may be offered according to customers' requirement. Cutting tool indexable tungsten carbide insert