Nano 99.99% Tungsten Disulfide Powder WS2 powder

Nano 99.99% Tungsten Disulfide Powder WS2 powder

Short Description:

  • Model Number: HR-WS2
  • Purity: >99.9%
  • CAS No: 12138-09-9
  • Density (g/cm3): 7.5
  • Bulk density: 0.248g/cm3
  • Color: Black gray powder
  • Normal size: D50:6-10um
  • Melting point: 1250 ℃
  • Application: lubricant, catalyst
  • Product Detail

    Product Description

    Tungsten disulfide is a compound of tungsten and sulfur, insoluble in water and organic solvents, and does not react with acids and bases. It is a gray-black powder with semiconducting and diamagnetic properties. Tungsten disulfide powder can be used as a lubricant with better performance than molybdenum disulfide, lower friction coefficient and higher compressive strength.


    Specifications of Tungsten Disulfide powder
    Purity >99.9%
    Size Fsss=0.4~0.7μm
    CAS 12138-09-9
    EINECS 235-243-3
    MOQ 5kg
    Density 7.5 g/cm3
    SSA 80 m2/g


    1) Solid additives for lubricating grease

    Mixing micron powder with grease at a ratio of 3% to 15% can enhance the high temperature stability, extreme pressure and anti-wear properties of the grease and prolong the service life of the grease.

    Dispersing nano tungsten disulfide powder into lubricating oil can enhance lubricity (friction reduction) and anti-wear properties of lubricating oil, because nano tungsten disulfide is a powerful antioxidant, which can greatly prolong the service life of lubricating oil.

    2) Lubrication coating

    Tungsten disulfide powder can be sprayed on the surface of the substrate by dry and cold air under the pressure of 0.8Mpa (120psi). Spraying can be carried out at room temperature and the coating is 0.5 micron thick. Alternatively, the powder is mixed with isopropyl alcohol and the sticky substance is applied to the substrate. At present, tungsten disulfide coating has been used in many fields, such as auto parts, aerospace parts, bearings, cutting tools, mold release, valve components, pistons, chains, etc.

    3) Catalyst

    Tungsten disulfide can also be used as a catalyst in the petrochemical field. Its advantages are high cracking performance, stable and reliable catalytic activity, and long service life.

    4) Other applications

    Tungsten disulfide is also used as a non-ferrous brush in the carbon industry, and can also be used in superhard materials and welding wire materials.


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