SYMPOSIA PAPER Published: 01 January 1987
STP25827S

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

Source

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.

Author Information

Shastry, CR
Bethlehem Steel Corp., Bethlehem, PA
Friel, JJ
Microanalysis Research, Princeton Gamma-Tech, Princeton, NJ
Townsend, HE
Bethlehem Steel Corp., Bethlehem, PA
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Details
Developed by Committee: G01
Pages: 5–15
DOI: 10.1520/STP25827S
ISBN-EB: 978-0-8031-5023-2
ISBN-13: 978-0-8031-0966-7