On Jun 15, 3:18 pm, Bob Kuykendall wrote:
10% in my world is hardly "virtually no"

Ah, and where does "less than 10%" fall?

For those with the time and interest, MIL-HDBK-5H has just about
everything you might want to know about use of aluminum in aircraft
structures (see chapter 3). Other metals are covered too. It's
freely available on the web courtesy of our tax dollars.

"MILITARY HANDBOOK, METALLIC MATERIALS AND ELEMENTS FOR AEROSPACE
VEHICLE STRUCTURES"

http://snap.lbl.gov/pub/nj_bscw.cgi/...h%20Metals.pdf


Enjoy,
Craig