PdCo40W20 Soft Annealed Alloy: Superior Corrosion & Wear Resistance

The palladium-cobalt-tungsten material PdCo40W20, also Pd40Co40W20 or 40Pd40Co20W, has satisfactory corrosion behavior but very good wear behavior. It is ductile and age-hardenable, as well as machinable. The palladium-cobalt-tungsten alloy is used as a contact material for sliding contacts and potentiometer wire and as a monolithic contact spring material.

Properties

General

Property	Temperature	Value
Density	20.0 °C	11.3 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	20.0 °C	167 GPa
Elongation	20.0 °C	40 %
Hardness, Vickers	20.0 °C	290 [-]
Poisson's ratio	23.0 °C	0.39 [-]	Typical for Palladium
Shear modulus	20.0 °C	62 GPa
Tensile strength	20.0 °C	1100 MPa
Yield strength Rp0.2	20.0 °C	630 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	300.0 °C	1.26E-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	23.0 °C	60 - 76 W/(m·K)	Typical for Palladium

Electrical

Property	Temperature	Value
Electrical resistivity	20.0 °C	8.9E-7 Ω·m

Chemical properties

Property	Value
Cobalt	40 %
Palladium	40 %
Tungsten	20 %

PdCo40W20: Enhanced Wear-Resistant Alloy for High-Performance Contact Applications PdW10 Alloy Deformation: Key Properties & Applications

Metal