Monel is one of the best in the marine industry. It's very nobel.

"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.