This specification covers a premium aircraft-quality corrosion-resistant steel in the form of bars, wire, forgings in the solution heat treated condition and stock of any size for forging.
It is a martensitic precipitation hardenable chromium-nickel-molydenum-aluminium steel possessing high strength and toughness.
These products have been used typically for parts requiring corrosion resistance and a combination of high strength and high toughness up to 800 °F (427 °C) but usage is not limited to such applications.
Certain processing procedures and service conditions may cause these products to become subject to stress-corrosion cracking.
| AMS |
|---|
| 5739 |
| C | Si | Mn | P | S | Cr | Mo | Ni | Ti | Al | N | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| max. 0.02 | max. 0.25 | max. 0.25 | max. 0.015 | max. 0.010 | 11.00 to 12.50 | 1.75 to 2.25 | 9.00 to 10.50 | 0.2 to 0.5 | 0.80 to 1.10 | max. 0.01 |
