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Stellite 6 Alloy

Stellite 6 is the most widely used of the wear-resistant cobalt-based alloys and exhibits good all-around 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.

Nominal Composition
Base: Co
Cr: 27-32
W: 3-6
C: 0.9-1.4
Others: Ni, Fe, Si, Mn, Mo

Hardness HRC: 36-45

Typical UTS: 850 MPa

UNS: R30006, R30106, W73006, W73036

AMS: 5387, 5373, 5788, 7239

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