Advertisement

Journal of Failure Analysis and Prevention

, Volume 13, Issue 5, pp 513–520 | Cite as

Boiler Stack Economizer Tube Failure

  • Ryan J. Haase
  • Larry D. Hanke
Technical Article---Peer-Reviewed
  • 276 Downloads

Abstract

A metallurgical evaluation was performed to investigate the failure of a type 304 stainless steel tube from a boiler stack economizer. The tube had three distinct degradation mechanisms: pitting corrosion, chloride stress corrosion cracking, and fatigue fracture. The primary failure mechanism for the tube was fatigue fracture, but the other mechanisms may have eventually caused a tube failure in the absence of fatigue. This paper details the visual, SEM/EDS, and metallographic examinations used to determine that these failure mechanisms were each present in the same tube.

Keywords

Boiler tube Fatigue Stress corrosion cracking Pitting corrosion Type 304 stainless steel 

References

  1. 1.
    R. Lund, Fatigue Fracture Appearances. ASM Handbook, vol. 11 (ASM International, Materials Park, 2002)Google Scholar
  2. 2.
    Forms of Corrosion, ASM Handbook, vol. 11 (ASM International, Materials Park, 2002)Google Scholar
  3. 3.
    W.R. Warke, Stress-Corrosion Cracking. ASM Handbook, vol. 11 (ASM International, Materials Park, 2002)Google Scholar
  4. 4.
    Nalco Company, Stress Corrosion Cracking. The Nalco Guide to Boiler Failure Analysis. (McGraw Hill, New York, 2011)Google Scholar
  5. 5.
    M.A. Streicher, Austenitic and Ferritic Stainless Steels. Uhlig’s Corrosion Handbook. (Wiley, New York, 2000)Google Scholar

Copyright information

© ASM International 2013

Authors and Affiliations

  1. 1.Materials Evaluation and EngineeringPlymouthUSA

Personalised recommendations