Selection of stainless steels for refineries and the petrochemical industry

The properties of the recently developed alloy SAF 2304 and of other duplex stainless steels are reviewed. When stress corrosion cracking is a potential problem, this group of alloys offers advantages as compared to the standard austenitic stainless steels AISI 304†316. This is even more true when the high yield strength and the physical properties of the duplex stainless steels can be utilized. When duplex stainless steels do not have sufficient corrosion resistance, Sanicro 28 is a suitable material selection.