The cheapest hot-rolled crap you can find in a scrap yard, w/ about 5 coats
of rustoleum+epoxy paint.
Also, wall thickness will be directly proportional to longevity. 16 ga?
1/8? 1/4??
Could also go w/ plastic on a metal frame.
500 years, eh? Man, you must be takin one helluva vitamin....
--
Mr. P.V.'d
formerly Droll Troll
"James" wrote in message
oups.com...
What commonly available alloy has the best corrorsion resistance
properties?

I am building a chamber that needs to last 500 years. It will be
indoors, but I need it to resist the effects of time and the elements.
I added commonly because I cannot afford some rare exotic metal.

Also, can anyone recommend a good metal rod, tube manufacter that
supplys their wares in metric sizes? (US based)

Thanks.