The application of 13% Cr grade stainless steels is increasing mainly due to the introduction of higher alloyed and weldable grades with carbon content as low as 0.01 %, and the very favorable costs compared to alternative materials as the 22Cr duplex stainless steel. Therefore these steels now have been subject to a major evacuation for transport of oil and gas offshore in the North Sea. This paper discusses aspects of testing required to assess their corrosion properties and their susceptibility to environment assisted cracking (EAC), caused by both H2S internally and cathodic protection externally. Testing is discussed with emphasise on test parameters for welded 13%Cr steel using
different types of consumables,
Keywords: 13%Cr SS, Welds, EAC, Test methods, Test parameters, H2S, Cathodic protection