China Boron Carbide B4c Powder From Coarse to Superfine
Boron Carbide Powder (B 4 C) a black crystal powder, is one of the hardest ManMade materials, its hardness with Mohs hardness and microscopic hardness kg/mm2 is only near upon diamond, its density is /cm3 and melting point is 2450#186;C, The boron carbide