Form: This specification covers a precipita.tion-hardenable@ corrosion and moderate heat resista.nt steel in the form of welded tubing. Application: Primarily for parts and assemblies requiring both corrosion resista.nce and high strength up to 600??(316??. Certain design and processing procedures may cause this material to be susceptible to stress-corrosion cracking; ARP 1110 recommends practices to minimize such conditions.