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Five Year Outdoor Scab Corrosion Results on Zinc and Zinc Alloy Coated Sheet Steels
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English
Abstract
A comprehensive selection of automotive sheet steels were exposed in an outdoor scab corrosion test to provide a base-line of cosmetic corrosion performance. Eighteen different coated sheet steels along with CRS as a control were processed using two commercially available zinc phosphate chemistries. The phosphating was done using both immersion and spray phosphate processes in a laboratory and an automotive assembly plant. Scribe creepage results are reported for 5 years outdoor scab exposure. Comparisons of the scribe creepage behavior of CRS, zinc, and zinc alloy coatings and the effect of the phosphate treatment are provided. An estimate of 10 years field performance is made.
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Citation
Davidson, D. and Hess, J., "Five Year Outdoor Scab Corrosion Results on Zinc and Zinc Alloy Coated Sheet Steels," SAE Technical Paper 932361, 1993, https://doi.org/10.4271/932361.Also In
References
- Lutze, F. Shaffer, R. J. “An Assessment of Nine Accelerated Atmospheric Corrosion Studies on the Cosmetic Corrosion Performance of the AISI Materials - Interim Report” SAE paper 912278 1991
- AISI Automotive Application Committee Task Force on Corrosion Minutes Oct. 1992
- Davidson, D. D. Schumacher, W. A. “An Evaluation and Analysis of Commonly Used Accelerated Cosmetic Corrosion Tests Using Direct Comparisons With Actual Field Exposure” SAE paper 912284 1991
- SAE ACAP Div. III Minutes Jan-Mar