STP965

    Sixteen-Year Atmospheric Corrosion Performance of Weathering Steels in Marine, Rural, and Industrial Environments

    Published: Jan 1987


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    Abstract

    Weathering steels ASTM A 242-Type 1 and ASTM A 588-Grade B and steels with 0.21 and 0.021% copper are tested for atmospheric corrosion resistance in marine, rural, and industrial environments. The 16-year atmospheric exposure test results obey well the kinetic equations of the form C = AtB, where C is the corrosion loss, t is time, and A and B are constants. The corrosion resistance of steels is compared on the basis of times required to achieve a 250 μm thickness loss calculated using the rate equations. In these environments, weathering steel ASTM A 242 is at least 16 times more corrosion resistant than the 0.021% copper steel and at least four times more corrosion resistant than the 0.21% copper steel. Similarly, weathering steel ASTM A 588 is about eight times more durable than the 0.021% copper steel and at least two times more durable than the 0.21% copper steel.

    Keywords:

    corrosion, corrosion tests, atmospheric corrosion, industrial environment, marine environment, rural environment, steels, weathering steel, kinetics, regression analysis


    Author Information:

    Shastry, CR
    Engineer and Senior Research Fellow, Bethlehem Steel Corp., Bethlehem, PA

    Friel, JJ
    Director, Microanalysis Research, Princeton Gamma-Tech, Princeton, NJ

    Townsend, HE
    Engineer and Senior Research Fellow, Bethlehem Steel Corp., Bethlehem, PA


    Paper ID: STP25827S

    Committee/Subcommittee: G01.04

    DOI: 10.1520/STP25827S


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