| Cobalt Base |
| Cast Alloy Designation | ILLIUM 21 |
| UNS Number | R30021 |
|
| Comparable Wrought Alloy | Stellite 21 |
| Applicable ASTM Spec | AMS 5385 |
|
|
| 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 |
|
|
| Mechanical Properties |
| Tensile (ksi) | --- |
| Yield (ksi) | --- |
| Elongation (%) | --- |
|
| Reduction of area (%) | --- |
| Hardness (Brinell) | 275 |
|
|
| 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 |
