| Tool Steel |
| Cast Alloy Designation | CO-1 | | UNS Number | T91501 |
| | Comparable Wrought Alloy | O-1 | | Applicable ASTM Spec | A597 |
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| Chemical Composition |
| C | 0.85 -1.0 | | Mn | 1.00 -1.30 | | Si | 1.5 | | P | 0.03 | | S | 0.03 | | Cr | 0.4 -1.0 |
| | Ni | --- | | Mo | --- | | Fe | --- | | Cu | --- | | Other | --- |
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| Mechanical Properties |
| Tensile (ksi) | --- | | Yield (ksi) | --- | | Elongation (%) | --- |
| | Reduction of area (%) | --- | | Hardness (Brinell) | --- |
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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 | No |
| Castability | Medium |
| Processability | Hard - Crack prone |
