The highest electrical conductivity is Silver: σ in S/m 61,39 · 10[SUP]6[/SUP]
next highest is Copper: σ in S/m 58,0 · 10[SUP]6[/SUP]
pretty low is Brass: σ in S/m 15,5 · 10[SUP]6[/SUP]
....the difference in price between Copper and Brass is next to nothing concerning the weight needed.
Chris
Anything worthwhile between copper and brass in the conductivity stakes?