Originally Posted by krazygluon
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Al and Ti come out very similar in the article, with the exception that Ti is just a lighter more expensive version of Al. These two also have the issue of metal fatigue from repetitive strain.
I don't believe that's accurate. Ti , like steel, has a fatigue limit. Thus repetitive strain below the fatigue limit will not cause fialure from metal fatigue.
Al, on the other hand does not have a fatigue limit, and will eventually fail from repetitive stress.
See:
http://www.roymech.co.uk/Useful_Tabl...e/Fatigue.html