Cobalt Base |
Cast Alloy Designation | ILLIUM 21 | UNS Number | R30021 |
| Comparable Wrought Alloy | Stellite 21 | Applicable ASTM Spec | AMS 5385 |
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Chemical Composition |
C | 0.20 - 0.30 | Mn | 1 | Si | 1 | P | 0.04 | S | 0.04 | Cr | 25.0 - 29.0 |
| Ni | 1.75 - 3.75 | Mo | 5.0 - 6.0 | Fe | 3.0 | Cu | --- | Other | B 0.007Fe 3.0 |
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Mechanical Properties |
Tensile (ksi) | --- | Yield (ksi) | --- | Elongation (%) | --- |
| Reduction of area (%) | --- | Hardness (Brinell) | 275 |
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Notes |
All single values are maximums unless noted otherwise.
Brinell hardness values and ranges represent typicals for the grade. |
More Info |
Weldable | Yes |
Castability | Good |
Processability | Good |