Hydrogen Embrittlement of a Type 431 Stainless Steel Mushroom-Head Closure
-
Published:2019
Abstract
A type 431 stainless steel mushroom-head closure fractured in service at a hydrogen pressure of 3000 atm. Fracture occurred at room temperature after miscellaneous chemical service that included exposures to hydrogen at temperatures from ambient to 350 deg C (662 deg F). Investigation (visual inspection and 2400x/6600x TEM analysis) supported the conclusion that failure was caused by hydrogen embrittlement, not SCC as might have been suspected. No recommendations were made.
Hydrogen Embrittlement of a Type 431 Stainless Steel Mushroom-Head Closure, ASM Failure Analysis Case Histories: Mechanical and Machine Components, ASM International, 2019, https://doi.org/10.31399/asm.fach.mech.c0091475
Download citation file:
Join Failure Analysis Society
The ASM Failure Analysis Society (FAS) is a community where failure analysis professionals from all over the world can learn and grow in their field.