Development of high corrosion resistant stainless steels for automotive mufflers based on condensate corrosion test and field investigation

Junichiro Hirasawa, Takumi Ujiro, Susumu Satoh, Osamu Furukimi

Research output: Contribution to conferencePaper

4 Citations (Scopus)

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.

Original languageEnglish
DOIs
Publication statusPublished - Dec 1 2001
EventSAE 2001 World Congress - Detroit, MI, United States
Duration: Mar 5 2001Mar 8 2001

Other

OtherSAE 2001 World Congress
CountryUnited States
CityDetroit, MI
Period3/5/013/8/01

All Science Journal Classification (ASJC) codes

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

Fingerprint Dive into the research topics of 'Development of high corrosion resistant stainless steels for automotive mufflers based on condensate corrosion test and field investigation'. Together they form a unique fingerprint.

  • Cite this

    Hirasawa, J., Ujiro, T., Satoh, S., & Furukimi, O. (2001). Development of high corrosion resistant stainless steels for automotive mufflers based on condensate corrosion test and field investigation. Paper presented at SAE 2001 World Congress, Detroit, MI, United States. https://doi.org/10.4271/2001-01-0640