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Journal of Materials Engineering and Performance

, Volume 3, Issue 6, pp 734–739 | Cite as

The chloride stress-corrosion cracking behavior of stainless steels under different test methods

  • L. Z. Jin
Tesing and Evaluation

Abstract

Chloride-induced stress-corrosion cracking (SCC) is one of the failure modes of stainless steels. Highly alloyed austenitic stainless steels S32654, S31254, and N08028, and duplex grades S32750 and S31803 possess much improved resistance to SCC compared with S30400 and S31600 steels. With the development of a database, SSData, experimental data collected from calcium chloride tests, autoclave tests, and drop evaporation tests were evaluated. Stress-corrosion cracking data generated by autoclave tests agreed well with the practical service conditions and can be used to discriminate alloys for SCC resistance in sodium chloride solution. Drop evaporation test data can be used in situations where evaporation may occur and cyclic loading may be involved. The SCC resistance of alloys under each method increased with increasing molybdenum equivalent Mo + 0.25Cr + 0.1Ni. For a given alloy, the testing result depends on the stress state and environment; different test methods can give different ranking orders concerning SCC resistance. The performance of duplex stainless steels in a chloride-containing environment at higher temperatures was not as good as expected when dynamic loading was involved.

Keywords

autoclave test calcium chloride test chloride stress-corrosion cracking constant load test drop evaporation test magnesium chloride test stainless steel 

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Copyright information

© ASM International 1994

Authors and Affiliations

  • L. Z. Jin
    • 1
  1. 1.Division of Materials Technology, Department of Materials Science and EngineeringRoyal Institute of TechnologyStockholmSweden

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