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    • Tungsten Disulfide Powder (WS2 Powder)

    Tungsten Disulfide Powder

    WS2 Powder · WS2 Dry Lube · Tungsten Disulfide Solid Lubricant

    Tungsten disulfide powder, or WS2 powder, is a dry solid lubricant for industrial and laboratory usage. The powder is usually indexed under WS2 lube or WS2 dry lube and can be applied as a thin dry coating or evaluated as an addition in suitable lubricant and material systems.

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    Lowerfriction provides 0.6 micron tungsten disulfide powder online. Alternative sub-micron, nano and bulk requirements can be reviewed against needed particle size, substrate, operating conditions, and order quantity.

    Product availability: The 0.6 micron WS2 powder (MK-WS2-06) is available online. Other sub-micron, nano and bulk supply alternatives are available subject to product and document confirmation.

    Available WS2 powder products and supply options

    Product or supply optionParticle sizeAvailability / ordering note
    Tungsten Disulfide Powder 0.6 micron MK-WS2-06 is listed online.
    Sub-micron WS2 powder Brochure range: 0.4 to 1.0 micron Confirm the required size, purity, documentation and packaging before ordering.
    Nano or custom WS2 powder Not specified in the supplied brochure Request-based. Contact Lowerfriction to confirm availability and technical documents.

    Specification note: The product purity and batch-specific particle size data should be reviewed against the specified product specification or certificate of analysis.

    Tungsten disulfide powder specifications

    PropertyReference value
    Chemical name Tungsten disulfide; tungsten(IV) sulfide
    Chemical formula WS2
    CAS number 12138-09-9
    EC number 235-243-3
    Molecular weight 247.97 g/mol
    Physical form Powder
    Density 7.5 g/mL at 25 °C
    Coefficient of friction 0.03 dynamic; 0.07 static
    Coated-film load-bearing ability 300,000 psi
    Typical coating film thickness 0.5 micron
    Brochure reference temperature limits Up to 650 °C in normal atmosphere; up to 1316 °C in vacuum

    Performance note: The coefficient of friction, load bearing capability and temperature compatibility are dependent upon particle size, grade, substrate, surface preparation, coating process and operating circumstances. Check important values against the most recent technical product document before usage in production.

    WS2 dry lube applications

    ApplicationHow WS2 powder is usedSelection note
    Dry-film lubrication Can be applied by spraying, buffing or tumbling. Final performance is affected by surface preparation and film control.
    Oil or grease additive testing Dispersed in a suitable lubricant system. Check dispersion, filtration and carrier compatibility. The documents supplied do not provide a universal rate of addition.
    Vacuum and controlled-environment lubrication Used where traditional liquid lubricants are not applicable. Verify substrate, loading, temperature and vacuum conditions.
    High-load sliding surfaces To be applied as a thin layer on suitable parts. Before introducing the application into production, test it.
    Resin, plastic or coating systems Added to a matching blend to enhance lubricity. Verify particle size, dispersion, processing conditions and material compatibility.
    If you require a finished grease formulation rather than WS2 powder for additive evaluation, see our high-temperature grease with WS2.

    Choosing a WS2 powder

    If you want a sub-micron material for dry-film coating or lubricant-additive assessment, use the 0.6 micron WS2 powder shown. For nano, alternative sub-micron or bulk needs please give the desired particle size, substrate, carrier medium, operating temperature, load, environment and order quantity in order to ensure availability.

    Need help selecting a WS2 powder? Share the application, substrate, carrier medium, operating conditions, required particle size and target quantity with Lowerfriction for product and purchasing guidance.

    Packaging, storage and handling

    ItemSupplied information
    Listed online pack The 0.6 micron product is presented as a 1 lb pack.
    Brochure-listed sub-micron packaging 1 lb plastic bag, 10 lb plastic bag and 25 kg (55 lb) drum. Confirm availability by product.
    Storage Store in a dry, well-ventilated place. Keep container tightly closed. Keep in a cool dry place.
    Handling Avoid skin and eye contact. Avoid generation of dust and provide enough exhaust ventilation where dust is formed.
    Personal protection Wear gloves, eye protection and breathing protection suited to the job where exposure to dust may occur.
    Transport The SDS states that the product is not dangerous goods under DOT, IMDG and IATA.
    Shelf life Not provided in the supplied documents.
    Safety note: Tungsten disulfide powder is classified by SDS as an irritant of skin, eye and respiratory system. Review the current SDS before handling, storing, transporting or using in the workplace.

    Product documents

    Frequently asked questions

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    What is tungsten disulfide powder?

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    What is WS2 dry lube used for?

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    What WS2 powder particle sizes are available?

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    How is WS2 powder applied?

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    How should tungsten disulfide powder be stored and handled?

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    Can I buy tungsten disulfide powder online or request a bulk quote?

    Buy tungsten disulfide powder online

    Order or request a quote: Select the listed 0.6 micron WS2 powder to order online, or contact Lowerfriction for bulk supply, alternative particle sizes, technical documents and procurement 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