Originally Posted by
sced
The article doesn't say this. When at Alcoa one area that I worked in was Al and Ti structural forgings and extrusions for various types of aircraft. Ti was only used for high temp applications, such as bulkheads around the engines of fighters, and I don't think it was because the military was being cost-conscious. Ti is also used extensively in jet engines.
You are correct. My intuition led me to make that statement. Found another article, but the aluminum #'s don't line up with the previously-referenced Boeing website. It does state Ti only accounts for 7% by weight on the 777, however (vs. 15% in the 787).
http://www.asminternational.org/imag...enten_1003.pdf