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A Comparison of Corrosion Test Methods for Painted Galvanized Steel
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English
Abstract
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.
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Authors
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.Also In
References
- Hospadaruk, V. Huff, J. Zurilla, R. W. Greenwood, H. T. “Paint Failure, Steel Surface Quality and Accelerated Corrosion Testing,” Paper 780187 National SAE Meeting Detroit 1978
- Westberg J. Borjesson, L. “Influence of Sheet Metal Surface Conditions on the Corrosion Properties of Automotive Paint Systems,” Paper 278 International Corrosion Forum Chicago 1980