Form

This specification covers a corrosion resistant steel in the form of investment castings.

Application

These castings have been used typically for parts requiring good corrosion resistance and strength up to 600 °F (316 °C), but usage is not limited to such applications (See 8.3).

Certain processing procedures and service conditions may cause these castings to become subject to stresscorrosion cracking; ARP1110 recommends practices to minimize such conditions. Where stress-corrosion is considered to be a factor, precipitation heat treatment should be performed at a temperature not lower than 1000 °F (538 °C).