I have yet to experiment with silver alloys with lower than 925 to
see if they are more resistant to wear. I am not concerned with the
higher tarnishing that will occur. Anybody have any experience with
this for jewelry, paticularly casting.
Canadian half dollars and quarters used to be made with 80% silver
and 20% Cu. That might be an indirect indication of hardness. I’ve
rolled out a fifty cent piece and had to take small steps to do so.