CWI Hi-Strength Series Stainless 17-7 PH (631) is a precipitation hardening stainless steel that provides high strength and hardness, excellent fatigue properties, as well as good formability.
UNS S17700 - Al: 0.75-1.50, Cr: 16.0-18.0, Ni: 6.5-7.75 with full chemistry to ASTM A313 and AMS 5678