Boron carbide is high performance abrasive material similar to diamonds with chemical and physical properties, such as hardness and chemical resistance.boron carbide ( b4c) is an very hard ceramic material which is used in bulletproof vests, tank armor Order high quality fepa graded boron carbide powders online here! pricing is per lb, with a 5 lb minimum order. boron caribde sandblasting abrasive grits and polishing powders are fepa classified, single classification. High purity boron carbide price 99% b4c powder boron carbide. 1 kilogram (min. 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. There are 1,536 boron carbide abrasive suppliers, mainly located in asia. the top supplying countries or regions are china, united states, and india, which supply 99%, 1%, and 1% of boron carbide abrasive respectively. boron carbide abrasive products are most popular in north america, western europe, and domestic market.