Effect of some metallurgical aspects on intergranular and pitting corrosion of stainless steel alloys (SAF 2205 and SAF 2304)

The supermartensitic chromium steels have already been used for seamless pipes in sweet gas applications and in the oil and gas industry since the early nineties. In order to reduce investment costs, the use of longitudinally welded pipes in supermartensitic chromium steels was increasingly discussed. Without exactly knowing what the costs would be, end users and steel producers assumed, that there would be pipe sizes in welded construction, the production of which appeared to be more economic than the production of a seamless pipe.