Precipitation-hardening stainless steels contain chromium, nickel, and other alloying elements such as copper. They can be heat-treated to achieve high strength while maintaining good corrosion resistance. These steels find applications in aerospace components, petrochemical equipment, and high-performance sports equipment.
Examples include:
- 17-4 PH (UNS 17400)
- 17-7 PH (UNS 17700)
- 15-5 PH (UNS 15500)
- 13-8 PH (UNS 13800)
- Custom 450 (INS S45000)
- Custom 455 (UNS S45500)
