This specification covers a low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
| SAE International | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Number | AMS6409A |
| Product Name | STEEL, BARS, FORGINGS, AND TUBING 0.80Cr - 1.8Ni - 0.25Mo (0.38 - 0.43C) (SAE 4340) Special Aircraft Quality Cleanliness Normalized and Tempered |