Properties of bn boron nitride Bn boron nitride crystal belongs to hexagonal crystal system, which is similar to graphite in structure and performance, so it is also called white stone ink. Bn boron nitride has good heat resistance and thermal stability. Properties, thermal conductivity, high temperature dielectric strength, is the ideal heat dissipation material and high temperature insulation material. Boron nitride is chemically stable and resistant to corrosion by most molten metals. It also has good self-lubricity. bn boron nitride products have low hardness and can be machined with an accuracy of 1/100mm. Parameters of bn boron nitride Boron Nitride main technical parameters Chemical properties (BN)99.99% Apparent Density2.10-2.19 g/cm3 Gas permeability (He)