Quote:
Originally Posted by ng8264723
Tom,
I read the article definitely worth the read. Unfortunately, there isn't much mention of the work hardening and fatigue I've heard about with headers. I heard from my machinist that the boat headers that are made os ss ork harden and when they crack are not amendable to welding. I wonder if this is true?
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I have never known work hardening to change weldability. In fact, to eliminate work hardening, you heat a metal up to anneal it or to normalize it. But, REMEMBER, work hardening or (cold working) a metal is NOT the same thing as heat treating/PH/tempering a metal.
David
