An Evaluation of Cosmetic Corrosion Performance of Zinc and Zinc Alloy Coated Steels

862014

12/08/1986

Event
1986 SAE Automotive Corrosion and Prevention Conference and Exposition
Authors Abstract
Content
A comparison of the cosmetic corrosion performance of zinc and zinc-iron alloy coated steels is made. Cosmetic corrosion can be defined in terms of paint creepage/blistering, red rust, and paint adhesion. Traditional scribe-type tests adequately address creepage and rusting, but do not adequately address paint adhesion. A new lab procedure called the Chipping Corrosion Test was used to assess paint adhesion of coated steels processed under various phosphate conditions. A review of the relative performance of zinc and zinc alloy coated steels in traditional scribed panel corrosion tests and the new chipping corrosion lab procedure is presented. Results of the Chipping Corrosion Tests showed significant differences in material performance when processed under plant conditions that were not evident under laboratory process conditions, or in traditional scribe-type tests.
Meta TagsDetails
DOI
https://doi.org/10.4271/862014
Pages
8
Citation
Gray, B., Shaffer, R., Stephens, M., and Davidson, D., "An Evaluation of Cosmetic Corrosion Performance of Zinc and Zinc Alloy Coated Steels," SAE Technical Paper 862014, 1986, https://doi.org/10.4271/862014.
Additional Details
Publisher
Published
Dec 8, 1986
Product Code
862014
Content Type
Technical Paper
Language
English