I am looking for an universal platinum alloy. We make rings by
machining and by casting.
As you may or may not know, platinum is used in different alloy
combinations. The reason for this is to provide the best high purity
alloy for the right manufacturing method.
Some alloys are very soft and need to be work hardened or heat
treated to become harder. These are ideal for die striking or hand
fabrication, where additional work is being done resulting in a
harder piece. When cast, however, the pieces are usually just cleaned
and polished and after stone setting the piece is done. For this
method of manufacturing, these soft alloys are less suitable. Your
ring may have been cast from Pt950/Iridium or Pt950/Palladium, which
have a hardness of only 80 and 65 Vickers respectively. Have your
jeweler check with the manufacturer.
Jurgen J. Maerz
Director of Technical Education
PLATINUM GUILD INTERNATIONAL USA
4 Hutton Center Drive, Suite 220
South Coast Metro, CA 92707
Tel: Main 714 442 3101