Abstract

1. With increasing nickel concentrations the susceptibility of Cr−Ni austenitic steels to transcrystalline corrosion cracking decreases. The steels with 40% Ni are completely resistant. 2. For steels with an austenitic structure an increase of the carbon content from 0.005–0.006 to 0.075–0.087 is accompanied by an increase of the resistance to corrosion cracking, which is revealed only by tests of the long-term corrosion strength and is evidently due to an increase of the yield strength. 3. In chloride solutions the corrosion cracking of austenitic steels is primarily transcrystalline. For high-nickel steels (40%) intercrystalline attack to a depth of 0.2 mm is observed in some cases.

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