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Old 05-08-09 | 09:58 AM
  #6  
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Mr IGH
afraid of whales
 
Joined: Apr 2009
Posts: 4,306
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From: Front Range, CO
Originally Posted by joeprim
It sometimes strikes me as worrysome, but we use 6061 T6 for all kinds of military parts and it seems to hold up "forever"....
American has 30 year old DC-9s. The wings are Al, they are holding up pretty well with over 50,000hrs on them. 50,000hrs on a bike takes 50 years at ~3hrs per day
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