STP64: Some Observations of Stress-Corrosion Cracking in Austenitic Stainless Alloys

    Scheil, M. A.
    Director, A. O. Smith Corp., Milwaukee, Wis.

    Pages: 16    Published: Jan 1945


    Abstract

    Austenitic stainless alloys are susceptible to stress-corrosion cracking which may occur under certain corrosion environments irrespective of their susceptibility to intergranular corrosion.

    Test samples are described for investigating stress-corrosion susceptibility of alloys for industrial equipment.

    A laboratory test using a solution of magnesium chloride boiling at 309 F. was found to produce transgranular cracks in several alloys investigated and in types 347 and 316 stainless steel tubing a residual stress of the order of 10,000 psi. was observed to initiate cracking.

    The susceptibility to stress-corrosion cracking as judged by the boiling magnesium chloride test indicates that alloys may be selected which will withstand a high stress in service.

    Stressed specimens of stainless alloys included in a corrosion testing program will aid in determining the acceptibility of these fabricated alloys, when stressed, to the service conditions.


    Paper ID: STP42585S

    Committee/Subcommittee: B05.06

    DOI: 10.1520/STP42585S


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