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Molybdenum disulfide (MoS2 ).
Like graphite, MoS2 has a low friction
coefficient, but, unlike graphite, it does not rely on
adsorbed vapors or moisture. In fact, adsorbed vapors may
actually result in a slight, but insignificant, increase in
friction. MoS2 also has greater load-carrying
capacity and its manufacturing quality is better controlled.
Thermal stability in nonoxidizing environments is acceptable
to 1100°C (2012°F), but in air it may be reduced to a
range of 350 to 400°C (662 to 752°F).
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