A common chromium, molybdenum, manganese low alloy steels noted for toughness and good torsional and fatigue strength.
| Specification | Description |
|---|---|
| AMS 6349 | Steel Bars. Normalized |
| AMS 6382 | Steel Bars and Forgings. |
| MIL-S-5626 | Steel Bars and Forgings. Aircraft Quality |