Alibaba offers 1,229 boron carbide powder b4c products. about 58% of these are other metals & metal products, 28% are abrasives, and 1% are animal pharmaceuticals. a wide variety of boron carbide powder b4c options are available to you, such as refractory, industrial ceramic. Download boron carbide sds boron carbide description. boron carbide, or b4c, is an extremely hard ceramic material discovered in 1899. boron carbide is smelted from boric acid and powdered carbon in electric furnace under high temperature. depending on hardness of 4950kgf/mm2, it is even harder than diamond and cubic boron nitride. Weyol boron carbide powder nozzle for sandblasting b4c powder nozzle insert , find complete details about weyol boron carbide powder nozzle for sandblasting b4c powder nozzle insert,boron carbide powder b4c for abrasive material refractory additive nuclear industry,special abrasive boron carbide powder from shanghai weyol,supply high quality boron carbide power with good grade Production show high purity boron carbide price 99% b4c powder boron carbide produc description boron carbide, black powder, is the hardest of the conventional abrasives. its mohs hardness is 9.36, melting point 2350℃, density 2.51g/cm3.