Boron carbide minus 20 plus 8 mm Ttl>=72%

Boron carbide is one of the hardest materials known after cubic boron nitride and diamond. Boron carbide is used in a variety of industrial applications, including abrasives, refractory materials, and as a neutron absorber in nuclear power plants. Also, it is used in the process of armor plates for body armor. The grinding material are used for grinding and polishing by loose abrasive grains and in the form of pastes for the operations of technical stones, minerals, alloys, glass, ceramics, quartz processing, in the process of cutting plates of hard alloys grinding and finishing, for abrading and metallographic work. The boron carbide is used for diffusive borating stamping equipment dies and parts, molds for metals and ceramics, pump parts, textile machinery and other steel parts, which are working in drudgery conditions at ambient and elevated temperatures, improves their performance in 2- 5 times. It is used in the manufacture of resistance and thermocouples when working under high temperatures conditions and in corrosive environments also.