"jim rozen" wrote in message
...
In article , Robert Latest says...

Mechanical as regards strength, hardness, and machineability.

Use aluminum, it will be better than Cu/Ag 90/10 alloy in all
of those catagories.

Jim


But probably horrible in the way of contact value, however. Aluminum
enjoys forming aluminum oxide rapidly---which is not known for its good
electrical properties.

Heavy duty silver contacts are made from tungsten powder and
silver------which yield the best of all worlds. Don't have a clue how
they'd machine, but I can't help but believe they'd be tough on tools.

Harold