Hexagonal Boron Nitride (hBN) has a similar crystal structure as Graphite. HBN is also known as ‘White Graphite'. This hexagonal crystal structure provides excellent lubricating properties which are much superior to Graphite, and excellent thermal and chemical stability.

CAS No.: 10043-11-5
EINECS No.: 233-136-6
Chemical Formula: BN
Molecular Weight: 24.82
Crystal Structure: Hexagonal phases
Melting Point: 3000 °C Dissociates
Coefficient of Friction (COF): 0.15 to 0.70
Thermal Conductivity: 0.08 cal/ cm.sec.K (at 293 K, directional average)
Temperature Stability:
1000°C in Air
1400°C in Vacuum
1800°C in Inert atmosphere
Insoluble in water

Specification:
Assay (BN):99.5% min.
Free of B2O3:0.2 max.
Moisture:0.3% max.
Particle size (D50):50 nm
Tap density, g/cm3:0.1~0.2
Surface Area (BET):15~45 m2/g

Typical Analysis Report
O: 0.20%
Cd: 2ppm
Pb: 2ppm
Hg: 2ppm
Cr: 2ppm
As: 10ppm

Key Characteristics:
Excellent Lubricating Properties; Good Chemical Inertness; Electrical Insulator; Thermal Conductor; High Temperature Stability; Low Thermal Expansion; Low Dielectric Constant; High Load bearing properties; Non-Wetting: hBN is not wetted by Glasses, Salts, and most metals.

Application:
Use as solid lubricant powders, or as a lubricant additive be dispersed in lubricating oil.
Use as mold release agent for plastic injection and metal.
Use as an electrical insulator in electronics as the substrate for semiconductors, microwave.
Mixed with other materials such as ceramics, alloys, resins, plastics, rubbers, and other materials for self-lubricating properties.