STP93

    Accelerated Corrosion Testing of Chromium-Nickel Stainless Steel Weldments

    Published: Jan 1950


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    Abstract

    Accelerated corrosion tests on metal-arc welded specimens of 0.06 per cent carbon and 0.03 per cent maximum carbon chromium-nickel stainless steel were conducted in hot nitric-hydrofluoric acids, boiling 65 per cent nitric acid and boiling copper sulfate-sulfuric acid solution. The results are compared with field experience with a welded pickling tank where both types of alloys were used.

    The three common corrosion tests differ markedly in their attack on weld heat-affected zones. The nitric-hydrofluoric acid test appears to be the most severe criterion of susceptibility to weld decay.

    Service results, where the corrosive conditions were severe, compared well with laboratory tests and confirmed the fact that the 0.03 per cent maximum carbon alloys are free from harmful carbide precipitation in the as-welded condition.


    Author Information:

    Bloom, F K
    Supervising Metallurgists, Research Laboratories, Armco Steel Corp, BaltimoreMiddletown, Md.Ohio

    Carruthers, M E
    Supervising Metallurgists, Research Laboratories, Armco Steel Corp, BaltimoreMiddletown, Md.Ohio


    Paper ID: STP43967S

    Committee/Subcommittee: A01.14

    DOI: 10.1520/STP43967S


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