[Top] [All Lists]

[TowerTalk] aluminum mast

To: <>
Subject: [TowerTalk] aluminum mast
From: (
Date: Wed, 17 Mar 1999 14:55:42 -0500
7075-T6 must be special made in Arizona (according to Tull Metals).  Its for
use in the space program and HD industrial applications.   I found this out
when buying parts for the Mexican Space Program as the University of Mexico
(UNAM) UNAMSAT30.  Its just luck if the have some in stock.

Dave K4JRB

>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
>Can anyone help with a source for this 'rare' pipe?
>Replies via the reflector, or e-mail at, or
>telephone 800-343-8977 ext. 29045.
>TIA 73 Steve KZ1X/4
>FAQ on WWW:     
>Administrative requests:

FAQ on WWW:     
Administrative requests:

<Prev in Thread] Current Thread [Next in Thread>