Volume 13, Issue 1 (January 1985)

    Comparison of the Kesternich Sulfur Dioxide Test with Industrial Atmospheric Corrosion Tests of Zinc-, Aluminum-, and Al-Zn-Coated Steel Sheet

    CODEN: JTEOAD

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    Abstract

    Results of the Deutsches Institut für Normung (DIN) Kesternich sulfur dioxide test (DIN 50018) are compared with those of long-term industrial atmospheric exposure tests of sheet steels coated with zinc, aluminum, and Al-Zn alloy coatings. According to the Kesternich test results, Al-Zn and zinc coatings provided sacrificial protection to the steel substrate whereas the aluminum coatings did not. Durability was highest for the 55% Al-Zn and aluminum coatings. Qualitatively, these results are in good agreement with those of atmospheric tests. However, durability of 4% Al-Zn and 7% Al-Zn in the Kesternich test was better than two times greater than that provided by zinc coatings. This finding does not agree with the results of long-term atmospheric tests in an industrial environment. These comparisons demonstrate that the Kesternich test provides a useful qualitative ranking of these coatings but should not be relied on to quantitatively predict coating life.


    Author Information:

    Berke, NS
    Senior research engineer, W. R. and Co., Cambridge, MA

    Townsend, HE
    ManagerMember of ASTM, Bethlehem Steel Corporation, Homer Research Laboratories, Bethlehem, PA


    Stock #: JTE10763J

    ISSN: 0090-3973

    DOI: 10.1520/JTE10763J

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    Author
    Title Comparison of the Kesternich Sulfur Dioxide Test with Industrial Atmospheric Corrosion Tests of Zinc-, Aluminum-, and Al-Zn-Coated Steel Sheet
    Symposium , 0000-00-00
    Committee G01