These dual phase materials are produced exclusively through powder metallurgy techniques, primarily through unit compaction. Compositions can range from 10% to 90% silver. Unit compaction is commonly required to form these contacts due to the low ductility of these materials. Consequently, silver refractory tends to involve more fabrication than many other contact materials. Refractory contact materials are supplied as discrete contacts with or without brazing alloys flushed to the attachment side. They are also available as furnace, torch, or resistance brazed contact assemblies.
The compositions listed are generally considered the industry standards. The listed values represent the typical properties of these materials. Modifications to meet special applications may be possible.