The crystal structure of hexagonal boron nitride has a layered structure similar to graphite, showing loose, lubricating, easy to absorb moisture, light weight and other properties of white powder, so it is also called "white graphite". The theoretical density is 2.27g/cm³, the specific gravity is 2.43, and the Mohs hardness is 2.

Hexagonal boron nitride has the advantages of non-abrasion, good lubricity, fire resistance and easy processing in terms of mechanical properties.
In terms of electrical characteristics, it has the advantages of good dielectric strength, low dielectric constant, low loss at high frequencies, microwave penetration, and good electrical insulation.
Hexagonal boron nitride has the advantages of high heat conduction, high heat capacity, low thermal expansion, thermal shock resistance, high temperature lubricity and high temperature safety in terms of thermal characteristics.
In terms of chemical properties, it has the advantages of chemical stability, corrosion resistance, oxidation resistance, low wetting, and non-sticking.

Ultra-fine boron nitride powder can be used in coatings. Boron nitride coating is an inert inorganic high-temperature lubricating material. It does not adhere or infiltrate the molten metal. It can completely protect the refractory that is in direct contact with molten aluminum, magnesium, zinc alloy and molten slag Material or the surface of ceramic utensils greatly extend the service life of such utensils.

Advantages of boron nitride used in coatings:
No pollution to the environment, no harm to the human body. Non-toxic, no peculiar smell. No risk of combustion or explosion.
Good heat resistance, up to 400～1700℃. Anti-corrosion performance and long service life. Realize self-curing at room temperature. Resistant to aging and radiation. Good water resistance, salt spray resistance, and organic solvent resistance.
The coating has a strong bonding force with the substrate. The coating has high hardness, resistance to friction and impact.