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Perforation Corrosion Resistance of Several Coated Steels in Two Simulated Model Tests
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English
Abstract
Perforation corrosion resistance of several precoated steel sheets developed for automotive panels, have been evaluated in a hemmed portion model test and a lapped portion model test. Corrosion behavior at hemmed sections can be simulated by a simple hem model with thin electropaint film. Ni-Zn alloy electroplated steel sheet (30g/m2) and an organic composite coated steel sheet showed excellent perforation resistance than galvannealed steel sheet (60g/m2) and hot-dip galvanized steel sheet (135g/m2). In a lapped portion model test, there was not a large difference in perforation resistance between cold rolled steel sheet and zinc alloy plated steel sheets. Organic composite coated steel sheets showed excellent perforation corrosion behavior in this test too. The ranking of precoated steels in two tests was different from that in conventional flat panel test.
Authors
Citation
Wakano, S. and Nishihara, M., "Perforation Corrosion Resistance of Several Coated Steels in Two Simulated Model Tests," SAE Technical Paper 890706, 1989, https://doi.org/10.4271/890706.Also In
References
- Miyoshi Y. Oka J. Maeda S. “Fundamental Research on Corrosion Resistance of Precoated Steel Sheets for Automobiles” Trans, of ISIJ 23 974 1983
- Streek G. V. “Hem Flange Evaluation of Corrosion Performance” SAE paper 850565
- Wakano S. Shiota T. Itoh M. Kawaguchi H. Nohmi R. “Weldable Pre-Painted Steel Sheet with High Corrosion Resistasnce” 1987 Mechanical Working and Steel Processing Proceedings 397
- Noumi R. Hobo Y. Kurimoto T. Suzuki N. Wakano S. “Development of Precoated Steel Sheets for Auto Bodies” Sumitomo Search 33 53 1986
- Wakano S. Shibuya A. Hobo Y. Nishihara M. “Corrosion Performance of Zn Alloy Precoated Steels for Automotive Body” Trans, of ISIJ 23 967 1983
- Miyoshi Y. Kitayama M. Ito Y. Koyahara H. “A Study on Corrosion Test Methods for Automotive Steel Sheet” SAE paper 840210