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aluminum welds very easily....but not to steel and most of the components (headers, cats, mufflers) are made of some sort of steel. Also, aluminum is very soft. if you bottom out with aluminum exhaust pipes, you could easily tear it open....where steel would be just scuffed up.
the metal I wanna know about is Invar...it's a steel/nickel alloy, but I have no idea what possibilities there can be for automotive application. It can be soldered if it is copper plated...not sure if it can be welded. I would think that it can be used for engine blocks, brake rotors, and other high-heat/high friction stuff.
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Originally Posted by black
holy crap, i just farted at work and the whole office stinks!!!!
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RIP to my Alero @ 112000 miles. COD: thrown rod. TOD: 430pm, Dec19, 2011.
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