What is Boron carbide?Boron carbide (chemical formula approximately B4C) is an extremely hard boron–carbon ceramic, a covalent material used in tank armor, bulletproof vests, engine sabotage powders, and numerous industrial applications. It was discovered in 19th century as the by-product of metal boride reactions. Controversy remained as to whether or not the material had this exact 4:1 stoichiometry, in practice, the material is always slightly carbon-deficient concerning this formula, and X