At what rate does Metal decompose?

Question

Obviously it takes a while, but everything eventually has to, right?

Answer 1

It depends what conditions the metal is in.  

Answer 2

Metals are elements, so decompose to what?  Radioactive metals decompose to other elements.  But otherwise they have already been around for a few billion years.

Answer 3

Metal does not decompose.  

Answer 4

I would have to say that the rate of breakdown of metal is directly proportionate to the elements of the chart it is exposed to.

Answer 5

Metals may oxidize or combine with Chlorine or other elements, but they don't really decompose.    Some metals like gold are extremely slow to react with anything.