No, there is not.
The foci for plane shift do not have a listed cost: they are considered negligible and therefore are covered by a Spell Component Pouch:
Spell Component Pouch
A spellcaster with a spell component pouch is assumed to have all the material components and focuses needed for spellcasting, except for those components that have a specific cost, divine focuses, and focuses that wouldn’t fit in a pouch.
If you have a Spell Component Pouch (or the Eschew Materials feat), then you have the requirement covered. As has been addressed elsewhere, spell components and foci, other than those that cost actual gold, are a bad joke. They’re supposed to be funny (your mileage may vary on that), and provide a bit of flavor to arcane spellcasting.
They are not intended to be a balancing mechanic and it is not intended, in 3.5, that a spellcaster should keep track of each one. The Spell Component Pouch and Eschew Materials were introduced to Dungeons & Dragons for the express purpose of eliminating those issues, which were a part of older editions (which, in general, made a much bigger deal of keeping track of supplies, since dungeon-delving was the more central focus, as I understand things).
However, it should be noted that plane shift itself does have a caveat in that certain planes may not have easily-available foci. Generally speaking, a well-stocked Spell Component Pouch should include all major planes, but, for instance, the personal demiplane of a recluse wizard, probably not so much. A DM may choose to make this more or less of an issue, but this is always a matter of plot and not of balance.
In any event, there is not a canonical list of the metals associated with each plane, even if just for fluff reasons. You’ll have to ask your DM if it is relevant to you. On some level, there is supposed to be a specific metal for each, but what exactly is the DM’s call.
For reference, I’ve checked the Manual of the Planes, the Planar Handbook, and searched online for any kind of list, official or otherwise. I could not find any, nor have I ever heard of one. I’ve also checked with a friend who knows a lot about Planescape, and he stated quite definitively that no such list exists.