Tungsten Disulfide (WS2) is dry/solid lubricant powder and is one of the most lubricious substance in world. WS2 offers excellent dry lubricity (COF: 0.03) unmatched to any other substance, including Graphite or Molybdenum Disulfide (MoS2).

Tungsten Disulfide (WS2) can also be used in high temperature and high pressure applications. It offers temperature resistance from -450 deg F (-270º C) to 1200 deg F (650º C) in normal atmosphere and from -305 deg F (-188º C) to 2400º F (1316º C) in Vacuum. Load bearing ability of coated film is extremely high at 300,000 psi.

Tungsten Disulfide (WS2) can also be used instead of Molybdenum Disulfide (MoS2). See comparison of WS2 / MoS2

Since the powder offers one of the lowest Coefficient of Friction (Dynamic @ 0.03 and Static @ 0.07), the applications are unlimited and could be tried with every conceivable idea. .

Two established ways the WS2 powder can be used are:

1) Mixing the WS2 powder with wet lubricants (such as oil, grease and other synthetic lubricants): The powder can be mixed 1wt% to 15wt% (as required) with grease or oil. This will enhance lubricity of the mixture and also improves High Temperature and Extreme Pressure properties of mixture. During the use, WS2 in the mixture will get coated on mating/moving parts, which in turn reduces friction and improves lubricity and load bearing ability for much longer cycles.

2) Coating the WS2 powder on a substrate requiring (dry) lubricity: The powder can be coated by spraying (at 120 psi) the substrate with dry (and cool) pneumatic air. It does not require any binders and spraying can be done at normal room temperature. Coated film will be 0.5 micron thick. In an alternative application method, the powder can also be mixed with Isopropyl alcohol and this paste could be buffed to the substrate. The coating applications are already established in many areas such as Automotive parts, Racing Car Engine and other parts, Aerospace parts, Bearings (Linear, Ball, Roller etc), Shafts, Marine parts, Cutting Tools, Blades, Slitters, Knives, Mould release, Precision Gears, Valve components, Pistons, Chains, Machinery components and many other areas.

Applications

  • Automotive Parts, Car Engine, Piston and Piston Cylinders
  • Bearings
  • Carbon Brush Solid Lubricant
  • Cams and Cam followers
  • Power Transmission Components
  • Machinery Components, Precision Gears
  • Plastic Moulds for easier release
  • Extrusion Dies
  • Aerospace Components
  • Defence Components
  • Marine Parts
  • Sliding or Rotating Components
  • Valve Components
  • Actuators
  • Spindles, Shafts and Seals
  • Rollers
  • Robotics
  • Sporting Goods
  • Cutting Tools
  • Blades, Slitters and Knives
  • Punches and Dies
  • Additive for Grease
  • Friction Lowering additive for oil
  • Bullet and Ammunition Parts

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