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Old 04-09-2015, 09:20 PM
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Quote:
Originally Posted by 455firebird1969 View Post
I see what you are talking about, but I don't think they are "beach marks". I don't see a growth pattern

The beach marks are a true yield strength limit indicator, yet was it organic defects in the material or a machining "stress riser" that got allowed to propagate. Hmmmmm.