Corrosion Resisting Properties of 90/10 Copper–Nickel–Iron Alloy with Particular Reference to offshore Oil and Gas Applications

Abstract

Published information on the performance of 90/10 copper-nickel-iron alloy in sea water environments is reviewed, covering the effect of iron content and of different heat treatments, behaviour in quiescent sea water and in polluted sea water, resistance to impingement attack (effect of water velocity), crevice corrosion and stress corrosion. Service performance in condenser and heat exchangers in power stations, ships, etc., in distillation plants and in ships’ sea water piping systems is reviewed. The use of the 90/10 alloy for various applications on offshore platforms is then discussed with particular emphasis on sea water piping systems.