Material alternatives for offshore seawater and process systems are briefly presented. In the former systems newer highly alloyed stainless steels to-day compete with traditional materials such as copper alloys. In the process systems conventional carbon steels (used with corrosion inhibitor) may be partly replaced by stainless steels, i.e. duplex and AISI 316 L, and must be if no inhibitor is used.

Finally, questions and problems are listed which may be topics for further research in this field.

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