Abstract
Uniaxial constant load SCC experiments have been performed on sensitized SUS 304 stainless steel in high temperature water. Experimental variables included temperature, dissolved oxygen concentration, pH, anion species, crevice and their combinations. The former three factors give their individual dependencies of IGSCC susceptibility and their threshold values, below which the IGSCC could hardly occur. Combinations of more than two environmental factors increase the severity of the IGSCC and change the threshold values. The specific IGSCC behavior with variations of the combined environmental factors was interpreted in connection with the stability of passive films in a corrosive environment under stressed or strained condition.
