Testing is done to evaluate the risk for HE due to CP on weldments of S13%Cr steel made with a matching filler material. For the as welded specimens, cracking occurred with CL specimens, while after PWHT at 620°C, no specimens failed. All cracks initiated in the weld metal. Improved weldments made by other welding techniques may lead to better results. There is a need in the industry to develop methodologies and procedures for relevant testing for the risk of HE from CP for stainless steel materials. It is important to better reproduce the actual stress and strain behaviour and take into account both that components may be coated and that H2S may be present in the mud.
Keywords: CP, supermartensitics, test methods.