Mudanjiang Qianjin Boron Carbide Co., Ltd

Boron carbide, also known as Black Diamond and scientifically denoted by the molecular formula B₄C, is a gray-black micro-powder. Among the hardest known materials, boron carbide is second only to diamond and cubic boron nitride in hardness. This remarkable substance is widely utilized in tank armor, bulletproof vests, and numerous industrial applications. It boasts a Mohs hardness of 9.3, making it extremely tough and durable. Historically, it was first employed as a reinforcing agent for metals in the 19th century and remains a key component in industries today, with companies like Mudanjiang Boron Carbide Co., Ltd in Heilongjiang, China, playing a significant role in its production.