Stellite® cobalt alloy balls combine HV 750–1,000 hardness, extreme wear and abrasion resistance and high temperature corrosion resistance. Unlike steels, Stellite alloys retain mechanical properties up to 700–800 °C. The PM grades (powder metallurgy) offer a more homogeneous microstructure and superior performance to the cast Stellite.
Materials available in cobalt alloy Stellite
| Material | Standard USA | Hardness | Diameters |
|---|---|---|---|
| 3PM Stellite® Bill | — | 50-57 HRC | 9.5 – 75 mm |
| Stellite® 20 Bill | — | 54-61 HRC | 9.5 – 75 mm |
| Stellite® Bill 20PMH | — | 56-63 HRC | 9.5 – 75 mm |
Applications of cobalt alloy beads Stellite
High pressure and high temperature valves, valve seats, pumps for abrasive fluids, oil and gas industry, steam generators.
