Stellite 20 Alloy

Stellite 20 is one of the most abrasion-resistant standard cobalt-base alloys. It also has good corrosion resistance. While it has low shock resistance, it is often the only answer for some environments where chemical resistance, in addition to abrasion resistance, is required.

Stellite 20 has been used in slurry pumps, pump sleeves, rotary seal rings, wear pads and bearing sleeves.

Nominal Composition
Base: Co
Cr: 32.5
W: 17.5
C: 2.5
Ni: <2.0 Others: Mo, Fe, Si Hardness HRC: 53-62

Typical UTS: 550 MPa

UNS: Not Listed

AMS: Not Listed