PdAg70 Alloy – Soft Annealed (A) – Premium Contact Material for Telecom & Control Applications

The palladium-silver alloy PdAg70, also Pd30Ag70 or 30Pd70Ag, is used as a contact material in relays and switches in telecommunications as well as in measurement and control technology at voltages in the range 20 to 60 V and switching capacities up to 300 W. Furthermore, the material is used for potentiometers. The material is ductile, sufficiently corrosion resistant and abrasion resistant. It is non-cutting machinable, roll-clad and conditionally deductible from the gas phase.

Properties

General

Property	Temperature	Value
Density	20.0 °C	10.9 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	20.0 °C	114 GPa
Elongation	20.0 °C	36 %
Hardness, Vickers	20.0 °C	55 [-]
Poisson's ratio	23.0 °C	0.39 [-]	Typical for Palladium
Shear modulus	20.0 °C	36 GPa
Tensile strength	20.0 °C	310 MPa
Yield strength Rp0.2	20.0 °C	150 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	300.0 °C	1.6E-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	61 W/(m·K)

Electrical

Property	Temperature	Value
Electrical resistivity	20.0 °C	1.5E-7 Ω·m

Chemical properties

Property	Value
Palladium	30 %
Silver	70 %

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Metal