| Silver Alloy | Gold Alloy | Platinum Alloy |
| Palladium Alloy |
| AIM Specialty Materials | California Fine Wire | CMW Inc. |
| Goodfellow | Hogen Industries | Johnson Matthey |
| Lucas-Milhaupt | Lucas-Milhaupt | Mi-Tech Metals |
| NBETech | Universal Wire Works | Williams Advanced Alloys |