know W4ZCB built HF beams from BRASS tubing years ago.
...seem to remember from my short stint in ME school that copper is more
prone to hold a set than 6061-T6 which will snap back after the ice thaws...
Jim, K4OJ
----- Original Message -----
From: "Dan Levin" <djl@andlev.com>
To: "tower talk" <towertalk@contesting.com>
Sent: Sunday, January 07, 2001 8:19 PM
Subject: [TowerTalk] Type L or K Copper Pipe as Vertical?
> Someone should create a FAQ on materials for making verticals :-) This
> would be one entry.
>
> I was at my local DIY emporium today when I discovered Type L and Type K
> 'hard' copper pipe. This stuff is 99.9% copper, comes in 1", 1.5" and 2"
> nominal sizes, and comes in 10 and 20 foot lengths. 10 feet of 2" Type L
is
> about $45 (compare to 10 feet of 2" 6061 aluminum from Texas Towers at
$45 -
> but the cu has .070" walls and the al has .0120" walls).
>
> Has anyone ever used this stuff to build verticals? Any reason to think
it
> is a good or bad idea? It is claimed to have a yield strength of ~40k PSI
> in this 'hard' state.
>
> Thanks!
>
> ***dan, K6IF
>
>
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