The 2205 is the most widely used of the Duplex stainless steels occupying more than 80% of the Duplex stainless steel market. The 2205 alloy provides better corrosion resistance in various enviroments. The 2205 alloys are metallographically examined to ensure that the shipped product is free from presence of detrimental phases such as sigma. it is often used in form of welded pipe or tubular components . the alloys has been applied as a formed ans welded shet product in enviroments where resistance to general corrosion and chloride stress corossion cracking is important.