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    • Hexagonal Boron Nitride Powder (hBN Powder)

    Hexagonal Boron Nitride (hBN Powder)

    Boron Nitride Powder · BN Powder · Hexagonal Boron Nitride

    Hexagonal boron nitride powder, also called hBN powder, BN powder or white graphite, is a white ceramic dry solid lubricant with a layered hexagonal crystal structure. It combines lubricity with electrical insulation, thermal conductivity, chemical inertness and non-wetting behaviour.

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    Lowerfriction supplies hexagonal boron nitride powder for industrial and laboratory applications. The current category range covers nano and micron grades for dry lubrication, mold release, thermal management, electrical insulation, coatings, ceramics, polymers, glass processing and molten-metal related uses.

    Product availability: The category lists 70 nm, 0.5 micron, 1.5 micron, 5 micron and 30 micron hBN powder. Check price, pack size and product documentation before buying the specified grade.

    Available boron nitride powder grades

    Product / GradeSKUParticle SizeListed Purity
    Hexagonal Boron Nitride Nanopowder MK-hBN-N70 70 nm 99.5%
    Hexagonal Boron Nitride Powder MK-hBN-050 0.5 micron 99%
    Hexagonal Boron Nitride Powder MK-hBN-150 1.5 micron 99.3%
    Hexagonal Boron Nitride Powder MK-hBN-500 5 micron 98%
    Hexagonal Boron Nitride Powder MK-hBN-3000 30 micron 98.5%

    Specification note: Purity and average particle size data are based on current product listings. Check batch specific data according to the provided product specification or certificate of analysis.

    Hexagonal boron nitride powder specifications

    PropertyReference value
    Chemical name / common names Boron nitride; hexagonal boron nitride; hBN; BN powder; white graphite
    Chemical formula BN / h-BN
    CAS number / EC number 10043-11-5 / 233-136-6
    Molecular weight 24.82 g/mol
    Physical form / colour Powder or nanoparticles / white
    Crystal structure Hexagonal
    Density Approximately 2.29 to 2.3 g/cm³
    Coefficient of friction 0.15 to 0.70
    Dielectric constant 4
    Dielectric breakdown strength 35 kV/mm
    Thermal conductivity 0.08 cal/cm.sec.K at 293 K, directional average
    Temperature stability Up to 1000 °C in air; 1400 °C in vacuum; 1800 °C in an inert atmosphere
    Melting / dissociation point Approximately 3000 °C; dissociates

    Performance note: The figures given are for the purpose of reference only. Lubricity, thermal performance and suitability for temperature are all dependent on grade, particle size, substrate, formulation and operating circumstances. Check key values before using in production.

    Boron nitride powder applications

    ApplicationHow hBN powder is usedSelection note
    Dry and high-temperature lubrication Used as a dry powder or evaluated as an additive in compatible oils, greases, water based systems and solvents. Check compatibility of carrier, particle size, load and operating temperature.
    Mold release Used for plastic, metal, refractory and glass-forming molds because of its lubricity and non-wetting nature. Choose the grade according to the application technique, film thickness and the desired surface finish.
    Thermal management Used for thermally conductive, electrically insulating filler for coatings, polymers and engineered materials. Validate loading level, dispersion and final thermal performance.
    Electrical insulation and electronics Used in selected fillers and insulation systems where heat dissipation and electrical resistance are both needed. Confirm dielectric and processing requirements for the final system.
    Glass and molten-metal processing Applications include crucibles, carrier pipes, pumps, thermocouple protection and vessel lining. Confirm process-material compatibility and exposure conditions.
    Coatings, ceramics and composites Blended with ceramics, alloys, resins, plastics, rubbers and coatings to provide useful lubricity or thermal properties. Conduct formulation and application testing before production use.

    Choosing an hBN powder grade

    Particle size affects dispersion, coating thickness, surface finish and processing behaviour. The 70 nm option is the finest listed grade; 0.5 and 1.5 micron grades provide fine micron-size options; and 5 and 30 micron grades provide progressively coarser choices. Final selection should consider the carrier medium, substrate, application method, operating temperature, purity requirement and target quantity.

    Need help selecting an hBN powder? Share the application, substrate, carrier medium, operating conditions, required particle size, purity and target quantity with Lowerfriction for product and purchasing guidance.

    Packaging, storage and handling

    ItemSupplied information
    Product form White powder or nanoparticles, depending on the selected grade.
    Packaging Confirm the current pack size and quantity availability for the selected grade.
    Storage Keep the container tightly closed in a dry, well-ventilated place. Protect from moisture; do not freeze.
    Handling Avoid dust formation and avoid inhaling powder dust. Keep the material away from strong oxidizing agents.
    Ventilation Provide suitable local exhaust or mechanical ventilation where dust may be generated.
    Personal protection Use workplace-appropriate gloves and eye protection. For nuisance dust, use suitable respiratory protection in accordance with the latest SDS and workplace requirements.
    Transport The SDS lists the product as not dangerous goods under DOT, IMDG and IATA.
    Safety note: The SDS does not classify hexagonal boron nitride powder as a dangerous substance or mixture under GHS, but powder exposure may irritate the respiratory tract, skin or eyes. Review the latest SDS before handling, storage, transport or workplace use.

    Product documents

    Frequently asked questions

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    What is hexagonal boron nitride powder?

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    Buy hexagonal boron nitride powder online

    Order or request a quote: Select the required hBN powder product from the category page, or contact Lowerfriction to confirm current pricing, packaging, quantity availability, technical documents and purchasing support.

    Technical information notice: Product information is for preliminary evaluation only and does not guarantee performance or suitability. Review the current SDS, TDS, and product specifications, try a small sample first, and confirm suitability before bulk use. Read the full disclaimer