Boron nitride is a synthetic ceramic, with crystal phases analogous to carbon. The hexagonal phase, similar to graphite, is the form Saint-Gobain manufactures. In its simplest form, it is a white, lubricious powder with many unique properties.
BN has one of the highest thermal conductivities for an electrically insulating material, with an added benefit of superior thermal shock resistance. As a platelet or agglomerated powder, it acts as an effective filler in polymers for thermal management. As a solid, its thermal shock resistance and inertness make it suitable for high-temperature ceramic manufacturing and molten metal processing.
High thermal conductivity (30-300 W/mK)
Low coefficient of thermal expansion (<2.3 in/in/°C x 10-6)
Inert - oxidation resistant up to 850ºC in in air, 2000ºC inert atmospheres
Resistant to corrosion by most molten metals
Due to its excellent lubricity, oxidation resistance and non-abrading properties, BN is ideal as a release agent in light-metal processing and as a lubricant additive in dynamic friction materials for high-performance automotive and aerospace applications. It’s low hardness makes it very easy to machine parts with tight tolerances, such as nozzles for metal atomization or side dams and break rings for steel casting.
Low coefficient of friction (0.3)
Low density (2.2 g/cm3)
Low hardness (1.5 on Moh’s scale)
BN can impart unique optical properties to compounds such as automotive varnish and cosmetic formulas. A wide selection of platelet sizes offers control over finish and opacity - from translucent to opaque and matte to shiny. Additional benefits in cosmetic formulations include oil absorption and optical blurring to reduce the appearance of scratching or fine lines. Its natural white color makes it easy to add to any formulation with dyes.
High refractive index (1.65)
Blurring of defects
Adjustable transparency and finish
Our offering of platelet and agglomerate hBN powders to serve a wide array of markets & applications