Molybdenum disulfide powders (MoS2 “Moly”) are used as lubricants or compounded into materials to provide inherent lubricity. Molybdenum Disulfide is also a common fortifying compound for high temperature and pressure lubricants, including dry films, oil dispersions, greases, and pastes. The lubricating properties of Moly are a result of its planar structure which allows molecules to slide past one another, creating an exceedingly low coefficient of friction between coated surfaces. McLube® offers three types of molybdenum disulfide powders (Super-fine, Technical Grade, and Technical Fine) which differ only in particle size. McLube® Technical Representatives can provide assistance with selecting the optimal particle size for your application.
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|McLube® MoS2-98 Super-Fine Grade|
Fisher Number (μm): 0.4-0.45
|McLube® MoS2-99 Technical Grade|
Fisher Number (μm): 3.0-4.0
AMS-M-7866 MILITARY SPECIFICATION – Molybdenum Disulfide, Technical, Lubrication Grade. This specification covers the requirements for procurement of one grade of powered molybdenum disulfide, to be used in lubricants and greases for surfaces where boundary conditions exist (formerly MIL-M-7866).
|McLube® MoS2-100 Technical Fine Grade|
Fisher Number (μm): 0.65 – 0.8
Details & Benefits
Typical Properties of Moly Powder
- Molecular weight: 6
- Crystal structure: Hexagonal, layered
- Hardness: 1-1.5 Mohs scale
- Electrical conductivity: Semiconductor
- Magnetic properties: Diamagnetic
- Chemical stability: Inert except for strong oxidizing agents
- Coefficient of friction: 0.03-0.06 typical
- Dry lubricate surfaces by rubbing, tumbling, or dusting
- Boundary Lubrication, Military Spec: AMS-M-7866
- Filler in self-lubricating plastics, rubbers, composites, and metal parts
- Additive in metalworking compounds
Consult a local McLube® Technical Representative to find the ideal formula available for your needs. Featured products displayed on this page from time to time are for promotional purposes only and do not represent the full product line McLube® offers for this particular material or application. Product availability, including container sizes, concentrations, and aerosols, will vary by country or region. Names of certain products may also vary slightly (prefix, suffix, etc.) depending on your location without affecting performance.