The presence of aluminum gathers high ductility and elevated mechanical properties in the springs. Even with lesser mechanical properties than AISI 302, it allows the production of springs of complex shapes. After the precipitation hardening, springs offer superior mechanical features than AISI 302; maximum employment temperature: 300°C.
W. n. 1.4568; EN 10270-3 X7CrNiAl; ASTM 17-7 PH; AISI 631.
Often used for complex components, due to its lower distortion during the heat treatment. Very stable. Used in a wide range of springs, washers, and elastic components.