4330 is a heat treatable high strength steel alloy containing chromium, nickel and molybdenum. Carbon content is in the 0.30% range and in the heat treated condition the alloy has good toughness and fatigue strength. Applications are those that require a good combination of strength and impact resistance, such as gears, aircraft landing gear, axles or shafts for power transmission.
| Specification | Description |
|---|---|
| AMS 6427 | Steel Bars and Forgings. |
| BMS7-27 | Steel Bar and Forgings. |
| BMS7-122 | Steel Bars. Vacuum Arc Re-Melted |
| AMS 6411 | Steel Bars and Forgings. |
| DMS 1891 | Steel Bars. |
| MIL-S-8699 | Steel Bars And Forgings. Aircraft Quality. |