Cubic boron nitride (CBN) is a super hard material synthesized by hexagonal boron nitride and catalyst under high temperature and pressure. The hardness of this superhard material is second only to diamond in industrial application. The thermal stability of Cubic Boron Nitride Powder is much higher than that of diamond, and it has greater chemical stability for iron series metal elements. Therefore, the cubic boron nitride grinding tool has been widely used in the cutting and grinding fields of iron fund products with excellent performance.

There are two kinds of cubic boron nitride: single crystal and polycrystalline sintered body. The single crystal is obtained by controlling the hexagonal boron nitride and catalyst in pressure in 3000 ~ 8000 Mpa and the temperature in 800 ~ 1900 ℃. Typical catalyst materials are selected from alkali metals, alkali earth metals, tin, lead, antimony, and their nitrides. The crystalline form of cubic boron nitride has the truncated cone of tetrahedron, octahedron, skew crystal and twin crystal, etc. Commercially produced cubic boron nitride is black, amber, and gold-plated with particles usually less than 1 mm in size.