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Jaro, et al, my understanding of IGA/SCC, is that
it can happen in any swaged/forged material. many times the cracking
is adjacent to the weld, since that is where the stress occurs (pull/push,
etc) and can also be associated with a chemical imbalance or attack
(IGA), such as chlorides on stainless steel. Note that SG tubes crack at
the junction where the tube in swaged/cold rolled into sheet, debris forms
sludge.
Info at the following link: http://neri.ne.doe.gov/abstracts/990202.pdf
Dean Chaney....
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