STP965: Sixteen-Year Atmospheric Corrosion Performance of Weathering Steels in Marine, Rural, and Industrial Environments

    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

    Pages: 11    Published: Jan 1987


    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


    Paper ID: STP25827S

    Committee/Subcommittee: G01.04

    DOI: 10.1520/STP25827S


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