Materials testing and characterization of four X60-X65 pipeline steels

Abstract

The report summarizes the main results from the slow strain rate tensile testing campaign performed within the framework of the HyLINE project. The metallurgical characterization of the pipe, in terms of base metals (BM), heataffected zone (HAZ) and weld metal (WM) has been carried out. The base metal of the four pipeline steels, in four different position of the pipes as well as the weld simulated heat affected zone, have been tested by SSRT under in-situ electrochemically charged hydrogen conditions and in air as a reference.