| Carbon and Low Alloy |
| Cast Alloy Designation | 8Q(4140) | | UNS Number | J14049 |
| | Comparable Wrought Alloy | 4140 | | Applicable ASTM Spec | A732/A915 |
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| Chemical Composition |
| C | 0.35 - 0.45 | | Mn | 0.70 -1.00 | | Si | .02 - 0.8 | | P | 0.04 | | S | 0.045 | | Cr | 0.80 -1.10 |
| | Ni | --- | | Mo | 0.15 - 0.25 | | Fe | --- | | Cu | --- | | Other | --- |
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| Mechanical Properties |
| Tensile (ksi) | 180 | | Yield (ksi) | 145 | | Elongation (%) | 5 |
| | 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 | Yes |
| Castability | Good |
| Processability | Medium |
