Hexagonal Boron Nitride (hBN) solid lubricant additives for high-temperature grease, food-grade lubricants, and electrically insulating applications. White, inert, chemically stable.
Hexagonal Boron Nitride (hBN, CAS 10043-11-5) is a white crystalline solid often called "white graphite" for its structural similarity to graphite: alternating boron and nitrogen atoms form hexagonal layers that slide against each other under shear. Unlike graphite, hBN is electrically insulating, chemically inert, and white in color — properties that open application areas where MoS₂ and WS₂ are unsuitable.
hBN maintains its structure and lubrication properties at temperatures up to 900°C in air and 1,400°C in vacuum, making it the preferred solid lubricant for high-temperature metal forming, sintering operations, and ceramic processing. Its complete chemical inertness means compatibility with aggressive acids, bases, and reactive media.
Powderful Solutions supplies hBN powder (Solidex H002) optimized for lubricant formulation:
Ultra-pure hexagonal BN powder, D50 = 0.2 μm, 99.5% purity. For high-temperature greases, food-grade lubricants, electrically insulating applications, and ceramic processing.
Tailored hBN dispersions in mineral oil or PAO for specific applications. Contact our technical team for custom formulation support.
Stable lubricant film at 900°C in air. No oxidation, decomposition, or performance degradation at temperatures where MoS₂ (350°C) and organic additives fail.
Unique among solid lubricants — hBN is a non-conductor. Essential for bearings, motors, and electrical equipment where conductive additives (MoS₂, graphite) would create short circuits.
Resistant to strong acids, alkalis, and reactive media. Compatible with aggressive process environments in chemical, semiconductor, and pharmaceutical manufacturing.
Will not discolor white or light-colored lubricant products. Critical for food-grade grease and cosmetic/pharmaceutical applications where black additives are unacceptable.
COF 0.15–0.25 — lower than graphite but higher than WS₂ and MoS₂. Effective boundary lubricant for moderate-speed, high-temperature, or chemically aggressive contacts.
Chemically inert and non-toxic. Compatible with food-grade lubricant standards and pharmaceutical manufacturing requirements.
| Property | hBN | MoS₂ | WS₂ | Graphite |
|---|---|---|---|---|
| COF (dry) | 0.15–0.25 | 0.05–0.10 | 0.03 | 0.10–0.20 |
| Max Temp (air) | 900°C | 350°C | 650°C | 450°C |
| Electrically insulating | ✓ Yes | ✗ No | ✗ No | ✗ No |
| Color | White | Black | Dark grey | Black |
| Food-grade compatible | ✓ | Limited | Limited | ✗ |
| Chemical resistance | Excellent | Limited | Good | Good |
Ultra-pure hexagonal boron nitride powder for high-temperature greases, food-grade lubricant formulations, electrically insulating bearing greases, and ceramic processing aids.
View full specifications →hBN at 3–15 wt% in high-temperature base greases for oven conveyor bearings, kiln car bearings, and furnace equipment operating above 300°C where MoS₂ and synthetic additives decompose.
NSF H1-compatible solid lubricant for food processing equipment greases, conveyor chain lubricants, and incidental food-contact applications. White, odorless, non-toxic.
Bearings and sliding contacts in electric motors, generators, and switchgear where conductive MoS₂ or graphite would cause insulation breakdown or short circuits.
Forging lubricants, hot-pressing compounds, and sintering aids for steel, titanium, and aluminum alloy manufacturing at temperatures exceeding 500°C.
Release agent and lubricant in ceramic pressing, semiconductor wafer processing, and refractory manufacturing. Chemical inertness prevents contamination.
Dry lubricant additive in PTFE, nylon, PEEK, and other engineering polymer composites for bearing and bushing applications requiring low friction without discoloration.
Our technical team works directly with lubricant formulators to optimize particle size, concentration, and carrier system for your application.