Hexagonal Boron Nitride, HBN Ultrafine Powder, 250 Grams

Save $45.00

Particle size (D50): 50nm Nanometer
Sale price$225.00 Regular price$270.00


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

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.

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.

MarkNature HBN powders are available in following particle sizes:
50 nm; 5 micron; 8 micron; 15 micron; 30 micron 

Specification: HBN-50
Assay (BN): 99.5% min. 98.5% min 99.0% min 99.0% min 99.0% min
Free of B2O3 0.2 max. 0.8% max. 0.3% max. 0.3% max. 0.3% max.
Moisture: 0.3% max. 0.5% max. 0.3% max. 0.3% max. 0.3% max.
Particle size (D50):  50 nm 5.0 μm  8.0 μm  15.0 μm  30.0 μm 
Tap density, g/cm3 0.1~0.2  0.3~0.5  0.4~0.6  0.5~0.7 0.5~0.7 
Surface Area(BET): 15~45 m2/g 8~20 m2/g 5~15 m2/g 1~3 m2/g 1~3 m2/g
Typical Analysis Report 
O: 0.20% 0.5~1.0% 0.40% 0.20% 0.20%
Cd: 2ppm  2ppm  2ppm  2ppm  2ppm 
Pb: 2ppm  2ppm  2ppm  2ppm  2ppm 
Hg: 2ppm  2ppm 2ppm  2ppm  2ppm 
Cr: 2ppm  2ppm  2ppm  2ppm  2ppm 
As: 10ppm  10ppm  10ppm 10ppm 10ppm


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