A type 304 stainless steel tube that failed in a boiler stack economizer was analyzed to determine the cause. The investigation consisted of visual, SEM/EDS, and metallographic analysis. Several degradation mechanisms appeared to be at work, including pitting corrosion, chloride stress corrosion cracking, and fatigue fracture. Investigators concluded that the primary failure mechanism was fatigue fracture, although either of the other mechanisms may have eventually caused the tube to fail in the absence of fatigue.
Ryan J. Haase, Larry D. Hanke, Boiler Stack Economizer Tube Failure, Handbook of Case Histories in Failure Analysis, Vol 3, Edited By Larry Berardinis, ASM International, 2019, p 507–514, https://doi.org/10.31399/asm.fach.v03.c9001825
Download citation file:
The ASM Data Ecosystem is a new and innovative product line that arms ASM Members and the scientific community with the tools and data required to exponentially expand the boundaries of materials science to meet the needs of Industry 4.0.