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Development of High Corrosion Resistant Stainless Steels for Automotive Mufflers Based on Condensate Corrosion Test and Field Investigation
Technical Paper
2001-01-0640
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
Automotive exhaust gas condensate causes severe corrosion inside mufflers. Corrosive condensate became a problem following the introduction of three-way catalytic converters in exhaust systems. The authors previously established a new laboratory test method that simulates condensate corrosion. This test method contributed to the development of new stainless steels for automotive mufflers. The addition of molybdenum (Mo) and copper (Cu) to ferritic stainless steels was found to be effective in improving condensate corrosion resistance, and the effect was arranged using the index [%chromium (Cr)+3×%Mo+1.5×%Cu]. A field test was carried out to investigate the corrosion behavior of mufflers under actual conditions. Aluminized steels showed severe damage by general corrosion. On the other hand, 19%Cr-Cu ferritic stainless steel exhibited excellent corrosion resistance. The corrosion behavior in the field test showed good agreement with the results of the laboratory test. Based on these results, Type 436L (18%Cr-1.2%Mo) and Type 430J1L (19%Cr-0.5%Cu) stainless steels were developed for muffler materials.
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Authors
Citation
Hirasawa, J., Ujiro, T., Satoh, S., and Furukimi, O., "Development of High Corrosion Resistant Stainless Steels for Automotive Mufflers Based on Condensate Corrosion Test and Field Investigation," SAE Technical Paper 2001-01-0640, 2001, https://doi.org/10.4271/2001-01-0640.Also In
References
- Chance R.L. Ceselli R.G. “Corrosiveness of Exhaust Gas Condensates,” SAE Technical Paper 133 830585 1983
- Lagier J. Rombeaux P. Ragot J. Vaugeois P. “Ferritic Stainless Steels in Exhaust Systems,” Innovation Stainless Steel 1159 1993 Oct.
- Sato E. Matsuhashi R. Ito S. Abo H. “Corrosion Behavior of Ferritic Stainless Steels in Exhaust Gas Condensate of Automobiles and its Evaluation Method,” Materials Performance 33 12 49 1994
- Gaugh R.R. “Corrosion of Materials for Automotive Exhaust Systems,” SAE Technical Paper 305 912294 1991
- Douthett J.A. “Designing Stainless Exhaust Systems,” Automotive Engineering 45 1995
- Gibson A. “Selection and Performance of Automotive Exhaust System Materials: A North American Perspective,” SAE Technical Paper 1 1996
- Ujiro T. Kitazawa M. Togashi F. “Corrosion of Muffler Materials in Automotive Exhaust Gas Condensates,” Materials Performance 33 12 49 1994
- “Test Method for Inner Corrosion of Automotive Parts,” Technical Report of SAE Japan, TP92004 3 1992
- Shimizu T. Ogaya M. Yokoyama K. “The Influence of Chemical Composition on the Press Formability of Chromium Stainless Steel,” Nippon Stainless Technical Report 12 81 1976
- Sawatani T. Shimizu K. Minamino S. Hirai S. “Formability of Low C, N 11-19%Cr Stainless Steel Sheet and Problems,” Tetsu to Hagane 63 9 A127 1977