This specification covers a premium aircraft-quality corrosion-resistant steel in the form of bars, wire, forgings up to 12.0 inches (305 mm) in diameter or least distance between parallel sides in the solution heat treated condition and stock of any size for forging.
It is a martensitic precipitation hardenable chromium-nickel-copper steel possessing high strength and toughness. Further strength increments can be obtained by cold forming, followed by a precipitation hardening treatment.
These products have been used typically for parts requiring corrosion resistance and high strength up to 600 °F (316 °C) with good ductility and strength in the transverse direction in large section sizes but,
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.
| Market grade | SEL | EN | UNS |
|---|---|---|---|
| 15-5 PH | 1.4545 | X5CrNiCu15-5 | S15500 |
| ASTM | AMS |
|---|---|
| A564 | 5659 |
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu | Nb | |
|---|---|---|---|---|---|---|---|---|---|---|
| max. 0.07 | max. 1.00 | max. 1.00 | max. 0.030 | max. 0.015 | 14.00 to 15.50 | max. 0.50 | 3.50 to 5.50 | 2.50 to 4.50 | 5xC to 0.45 |
