Titanuim fasteners are lighter than steel for the same size, they are stronger for the same weight as steel but not as strong as a grade 5 bolt for the same size.
Also it is an old wives tale that grade 5 bolts are better in shear than a grade 8 bolt.
This infomation is right out of my engineer hand book on materials. I will look for a link on this, I read somthing on this in a four wheeler magazine.
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