Detailed Product Description Boron carbide, a black crystal powder, is one of the hardest Man-Made materials, its ... , no magnetism. It is a good replacement of diamond. Boron carbide also possesses the specialty properties of light quality, neutron ... element, precise spray nozzle, sealed washer, smelting boron steel, boron alloy, etc. Boron carbide has showed many better properties of physics and ...