On Thu, 11 Oct 2007 21:25:14 -0500, Brian Whatcott
wrote:

Yes but it's relatively high-resistance compared with copper, silver
plate, or (preferably soft) aluminum sheet.

Funny you should mention soft. It is true that anything that hardens
copper or aluminum will increase electrical resistance. In the case of
work hardening, you beat dislocations into the crystal structure. Even
that has a very slight effect on the electrical properties. If you
have a joint between copper and aluminum immersed in the bilge water,
you may perhaps have some trouble with corrosion.

Casady