This project is aimed at improving the knowledge of corrosion behaviour of duplex stainless steels and other corrosion resistant alloys (CRAs) in brine and H2S-containing environments, and to define the ranges of application of the different materials. The work is divided into three main activities: data acquisition in reference and in field-simulating conditions, the study of corrosion mechanisms on stainless steels, and the study of welded assemblies. Advantages of the application of CRAs in offshore situations include increased safety for personnel exposed to risk of component failure in the presence of poisonous or explosive gases.