Grade: PV30 gravity: 14.2 Hardness: 90.5 Flexural strength: 3600 Usage: powder molding, high-speed steel for high flexural strength and impact toughness, and good processability, is still the most widely used tool material , followed by carbide. Tungsten / carbide there is one is one or more carbides (such as tic, wc, etc.) for the hardening phase in alloy steel (such as high-speed steel, molybdenum chrome steel, etc.) made of powder as binder, called Steel Carbide. Its hardness is between between steel and carbide, but the toughness and can greatly improve the machining and heat treatment processing. The typical hardness of steel Carbide: After quenching - tempering hardness of 69 ~ 73hrc, high-speed steel 65%.