Comparative Study of Corrosion and Environmental Cracking Properties of 316L and Lean Duplex Alloys

摘要

Alloy S31603 (316L) is a widely used corrosion resistant alloy (CRA) with a long experience record in offshore oil and gas applications. With recent price fluctuations in metals' prices, many alternatives to Alloy S31603, specifically “lean duplex” alloys, have risen in popularity. Lean duplex alloys may offer two cost advantages to Alloy S31603: lower or more stable materials prices (depending on the commodity price of nickel), and less material (wall thickness) required due to the higher strength of lean duplex alloys compared to Alloy S31603.