Six different heats were chosen from an archival data base of X52 pipeline steel using a statistical test design to evaluate the microstructure/microchemistry effects of S, P, and C. Crack growth
measurements were carried out on compact tension specimens in the carbonate/bicarbonate environment at 75°C and potential control to evaluate the stage 2 crack growth rates...
Keywords: carbonate, bicarbonate, pipeline steel, SCC, microstructure, microchemistry