This specification covers a corrosion and heat resistant steel in the form of welded tubing. This tubing has been used typically for parts requiring corrosion resistance and high strength up to 600 degrees F (316 degrees C) after precipitation heat treatment, but usage is not limited to such applications. Certain design and processing procedures may cause this tubing to become susceptible to stress-corrosion cracking after precipitation heat treatment; ARP1110 recommends practices to minimize such conditions.