A Comparison of Corrosion Test Methods for Painted Galvanized Steel 820427
Various galvanized steels, ZINCROMETAL and cold-rolled steel were painted with automotive-type paints and tested via accelerated, atmospheric and on-vehicle tests. Tests indicate that the ASTM B117 salt fog test and the Kesternich SO2 test do not yield results which are indicative of automotive, in-service corrosion performance. A modified Volvo scab corrosion test was found to offer an accelerated method to accurately predict automotive, in-service corrosion performance. Galvanized steels exhibited corrosion resistance which was far superior to ZINCROMETAL and cold-rolled steel. Thicker zinc coatings on steel were found to offer better corrosion protection to painted substrates.
Citation: Nowak, E., Franks, L., and Froman, G., "A Comparison of Corrosion Test Methods for Painted Galvanized Steel," SAE Technical Paper 820427, 1982, https://doi.org/10.4271/820427. Download Citation
Author(s):
E. T. Nowak, L. L. Franks, G. W. Froman
Affiliated:
Inland Steel Research Labs., East Chicago, IN
Pages: 11
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Steel
Corrosion
Test procedures
Coatings, colorants, and finishes
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