4340 Steel
4340 Steel
4340 steel is used in applications requiring great strength and ductility like automotive, axels, mining applications, shafts, and tooling. Frequently used to add strength and durability to materials when other steels fall short.
| Hot Rolled | Carbon (C) | Manganese (Mn) | Phosphorous (P) | Sulfur (S) |
|---|---|---|---|---|
| 0.38 - 0.43 | 0.60 - 0.80 | 0.035 Max | 0.04 Max | |
| Silicon (Si) | Nickel (Ni) | Chromium (Cr) | Molybdenum (Mo) | Other |
| 0.15 - 0.35 | 1.65 - 2.00 | 0.70 - 0.90 | 0.20 - 0.30 | -- |
| Tensile Strength | Yield Strength | Elongation % | Reduction Area % | Hardness |
| 108 ksi | 68 ksi | 22% | 50% | 217 HBW |
Mechanical properties are displayed in the Annealed condition.