It has the same properties as boron carbide, extremely hard and wear-resistant, can not react with acid and alkali, high/low temperature resistance, high pressure resistance, density 2.46g/cm3; Microhardness 3500kgf/mm2, bending strength 400MPa, melting point 2450 because of the boron carbide nozzle has the above wear-resistant and high hardness characteristics, boron carbide sand nozzle will gradually replace the known carbide/tungsten steel and silicon carbide alumina silicon nitride zirconia and other materials of the sand nozzle.