OK, I give up.
I have been trying for DAYS to find a source of 2" OD, 0.375" wall 7075-T6
extruded aluminum tubing.
Nobody seems to have any. I have called more than 9 places, from coast to
coast. Only an Iranian website had any hope of providing this stuff, and
I'll be damned if I have to buy it from the Iranians.
I need at least a 16' long piece, and would take as much as 20' if I had
to, in order to get it. I do not want to weld 2 pieces together.
I need the aluminum because I have a weight restriction, and steel is just
too heavy for my application. I am fully aware that this material runs $40
a foot, versus chrome-moly 4043 at $20 or so.
The aluminum weighs 2 1/4 lbs. a foot, and the steel is between 6 1/2 and 7
1/2 lbs. foot. That's 36 lbs. versus 120 lbs.! I'll pay for the aluminum.
And yes, I am also aware that the yield strength is lower... 110 kpsi
versus 73 kpsi. My calculations show I need 59 kpsi to survive a 90 mph wind.
Can anyone help with a source for this 'rare' pipe?
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telephone 800-343-8977 ext. 29045.
TIA 73 Steve KZ1X/4
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