Boron nitride can be used to manufacture crucibles for smelting semiconductors and high-temperature containers for metallurgy, semiconductor heat dissipation insulating parts, high-temperature bearings, thermocouple sleeves and glass forming molds, etc.

The boron nitride usually produced has a graphite structure, commonly known as white graphite. The other is diamond type, which is similar to the principle of converting graphite into diamond. Graphite type boron nitride can be converted into diamond type boron nitride under high temperature (1800℃) and high pressure (800Mpa). The B-N bond length (156pm) of this boron nitride is similar to the C-C bond length (154pm) of diamond. The density is also similar to diamond. Its hardness is about the same as diamond, and its heat resistance is better than diamond. It is a new type of high-temperature-resistant superhard material used to make drill bits, abrasives and cutting tools.