with splendid wear resistance, high heat resistance and hardness. Hardness:HRA92.8 Density:14.5~ ... carbide strips, rods,rings,inserts, shims, wear parts, drawing dies,drilling bits,cold forging dies,bars, balls,burrs ,PCD blades,PCBN ... are WC, TiC, Cr3C2, VC, TaC, NbC, BC4, etc carbide drilling bit