
Originally Posted by
greytruck
I agree with hills on this one, i actually never found these worth while to take apart. yes there is some copper and brass bits, but it aint much.
I also heard that the contacts are actually tungsten or some sort of mixed silver alloy.
Cadmium alloyed in Silver contacts, then you have barium copper.
The silver in breaker contacts is clad, a thin layer of silver compressed onto a base metal.
Heavy duty silver contacts used in electric
forklift relays, silver impregnated into sintered tungsten.
None of the above worth the time, chemicals or the energy to recover.
Carbon brush's from wind turbines, welder generators and starters contain as much as 70% silver. No chemicals required to recover the silver which comes out 100% pure.
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