Will They Work? A Proof-of-Concept Study Comparing a 500Pd BMG and Crystalline Alloys for Watch Pieces and Jewelry

Bulk metallic glasses based on precious metals offer exceptional hardness compared to conventional crystalline alloys. They can be processed like plastics via routes analogous to injection molding with excellent as-cast surface finish and far shorter cycle times compared to conventional investment casting of crystalline alloys. The properties of these alloys were presented and discussed at the 34th Santa Fe Symposium. Amongst many potential applications are hallmark-compliant watch casings and jewelry. For the former, current hallmarked alloys are generally too soft. Results of accelerated lab tests and real-life wear tests for a Pd500 BMG in comparison with comparable crystalline alloys are presented, to assess the suitability of BMGs for watch and jewelry. The outcomes are discussed and critically evaluated to understand the suitability of these alloys now and in the future.