Hexagonal boron nitride is a good conductor of heat, an insulator of electricity, and has excellent chemical stability. It can neither wet nor act on most metal melts such as steel, stainless steel, aluminum, iron, copper, etc., and has good lubrication performance.Therefore, hexagonal boron nitride is widely used in ceramic manufacturing industry, such as crucible, evaporation boat for aluminizing, circuit board substrate and high temperature lubricant industry.The melting point of BN porcelain is very high, and its point resistivity is also very large at high temperature. It is good to make high temperature insulating materials.Bo