Conductivity for a hunk of metal 62 mils thick by quarter inch wide by a
foot long where you measure resistance in the micro-ohms means absolutely
nothing -- copper, brass, or aluminum. On the other hand, corrosion means a
lot -- like steel hardware on aluminum, no matter how good the plating on
the steel.

Jim


"ELIPPSE" wrote in message
oups.com...
Brass has substantially less conductivity than copper. Aluminum has
less conductivity than copper, but has twice the conductivity per pound.