Stellite®
cobalt base alloys consist of
complex carbides in an alloy matrix.
They are resistant to wear, galling and
corrosion and retain these properties
at high temperatures. Their exceptional
wear resistance is due mainly to the
unique inherent characteristics of the
hard carbide phase dispersed in a CoCr
alloy matrix.
Stellite®
6 is the most widely used of
the wear resistant cobalt based alloys
and exhibits good all-round performance.
It is regarded as the industry
standard for general-purpose wear
resistance applications, has excellent
resistance to many forms of mechanical
and chemical degradation over a wide
temperature range, and retains a reasonable
level of hardness up to 500°C
(930°F). It also has good resistance to impact and cavitation erosion. Stellite®
6 is ideally suited to a variety
of hardfacing processes and can be turned with carbide tooling. Examples include valve seats and gates;
pump shafts and bearings, erosion shields and rolling couples. It is often used self-mated.