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#1
November 27th 03, 02:54 PM
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Aardvark wrote in message .. .
Orval Fairbairn wrote: I would think that the seam would lose a lot of its basic heat treat strength, due to the melting/recrystallization. A PDF on stir/friction welding from NASA.gov http://makeashorterlink.com/?E472217A6 ww That's the process. The metal, as they say, does not actually melt, just plasticizes, and doesn't lose its strength. Dan 
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