Alloy information - Paliney 9

Paliney 9 is an alloy with a chemical composition similar to that of Paliney 7. It is basically a high palladium, silver alloy that also contains gold, platinum, and copper. The principal difference in composition is that Paliney 9 does not contain zinc. It is used as a spring arm and contact in miniaturized relays where higher electrical energy levels are attained than are normally used with noble metal contacts. With the absence of zinc, Paliney 9 does not age harden in the same manner as Paliney 7. Therefore, its best spring characteristics are developed through cold drawing or work hardening followed by a stress-relieving operation. This produces wire that has sufficient ductility to permit forming and adequate strength to be used as a cantilever member. Paliney 9 is used most often for low current make-and-break switching applications. However, its hardness does permit its use in sliding contact applications. The corrosion resistance of this ally is similar to that of Paliney 7.