PdAg50 Soft Annealed Alloy (+A): Durable Contact Material for Telecom & Control Systems

The palladium-silver alloy PdAg50, also Pd50Ag50 or 50Pd50Ag, is used as contact material in relays and switches of the telecommunications as well as of the measuring and control technology with voltages in the range 20 to 60 V and switching capacities up to approx. Furthermore, the material is used as Potentiometerlegierung. The material is ductile, corrosion-resistant, less resistant to Pd (pure) Brown Powder effect, abrasion resistant. It is non-cutting and machinable machinable, roll-clad, from the gas phase conditionally separable.

Properties

General

Property	Temperature	Value
Density	20.0 °C	11.2 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	20.0 °C	137 GPa
Elongation	20.0 °C	37 %
Hardness, Vickers	20.0 °C	65 [-]
Poisson's ratio	23.0 °C	0.39 [-]	Typical for Palladium
Shear modulus	20.0 °C	44 GPa
Tensile strength	20.0 °C	350 MPa
Yield strength Rp0.2	20.0 °C	140 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	300.0 °C	1.46E-5 1/K
Melting point		1553 °C	Typical for Palladium
Specific heat capacity	23.0 °C	236 - 248 J/(kg·K)	Typical for Palladium
Thermal conductivity	20.0 °C	32 W/(m·K)

Electrical

Property	Temperature	Value
Electrical resistivity	20.0 °C	3.03E-7 Ω·m

Chemical properties

Property	Value
Palladium	50 %
Silver	50 %

PdAg50 Alloy – Deformed Condition: Properties & Applications PdAg70 Alloy – Ductile, Corrosion‑Resistant Contact Material for Telecom and Control Applications

Metal