Quote:
Originally Posted by geeknerd99
Ti is extremely lightweight, but also pretty darn expensive. It is probably the strongest of the 3.
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It actually is not extremely lightweight at all. The density of titanium is approximately 0.16 lb/in^3 where the density of nearly all aluminum alloys is approximately 0.10 lb/in^3. By comparison, titanium is quite heavy. However, with higher grade titaniums (Grade 5 and Grade 9) you can get away with less material thickness in your part. However, grade 2 titanium is actually quite weak (40ksi yield). Some of the aluminum alloys such as 7075 and 7068 can have quite high yield strengths, in the range of about 63ksi and higher.
For your application though, I might suggest polycarbonate (Lexan).