Corrosion cracking of cast Cr—Ni—Mo ferritic—austenitic steels

We study two-phase cast steels in aggressive media most extensively encountered in industry and nature, namely, chloride, alkali, and hydrogen-sulfide media. Unlike austenitic cast steels, two-phase cast steels prove to be promising structural materials for the operation in hot concentrated alkali media and chloride solutions of low concentrations. In the case where the concentration of chlorides may increase, working stresses can be found according to their threshold values. The two-phase cast steels are unsuitable for operation in hydrogenating media.