The copper tubing that I use is not easy to bend and is used for plumbing
houses and other buildings. Plenty of fittings are available at the local
hardware store, they are cheap and I have seen very little corrosion in the
5 years they have been in the liner. I agree with you that the "soft"
copper tubing corrodes easily and work hardens. I have experienced no
cracks or other fracture failures with the "stiff stuff".
Just another approach......stainless is best from the corrosion standpoint.
At 06:58 PM 9/9/2003 -0500, Albaugh, Neil wrote:
>I'd recommend you stay away from copper tubing. Although it is easy to bend,
>it work-hardens and it also has very poor fatigue characteristics. Vibration
>will cause cracks in copper tubing far sooner than aluminum or steel.
>Another consideration is the dissimilar metals problem. Corrosion is
>minimized when aluminum tubing is used with those nice blue-anodized AN
>fittings. Brass fittings are appropriate for copper tubing.
>Summary: use 5052-O soft aluminum tubing.
>Regards, Neil Tucson, AZ
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