Characteristics of boron carbide materials: Boron carbide is one of the hardest man-made materials, which has the characteristics of light weight Semiconductor property, neutron absorption, high grinding efficiency, and no reaction with strong acid strong base. Mohs hardness is 9,36, microhardness is 5,400 ~ 6,300 kg/m2, density is 2.52 kg/m2, melting point is 2,450 degrees Celsius, Boron carbide is a hexagonal dark color. Due to the above characteristics and properties, boron carbide is widely used in machinery metallurgy, chemical industry, aerospace and military industry and other fields. Abrasives can be used to process gemstones, ceramics, cutters, bearings, refractories in various fields of metallurgy