AgCu10 Soft Annealed Alloy (+A): Ductile, Machinable Copper‑Silver Composite for High‑Current Switches

AgCu10, also called Ag90Cu10 or 90Ag10Cu, is ductile, sensitive to sulfur and not oxidation resistant. AgCu10 is machinable, roll-cladable and can be separated from the gas phase. The AgCu materials are used as AC and DC switches for power and communications engineering with switching currents up to 10 A, occasionally up to 25 A, more rarely at higher currents.

Properties

General

Property	Temperature	Value
Density	20.0 °C	10.3 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	20.0 °C	81 GPa
Elongation	20.0 °C	58 %
Hardness, Vickers	20.0 °C	65 - 95 [-]
Poisson's ratio	23.0 °C	0.37 [-]	Typical for Silver
Shear modulus	20.0 °C	28 GPa
Tensile strength	20.0 °C	310 MPa

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	300.0 °C	1.96E-5 1/K
Melting point		962 °C	Typical for Silver
Specific heat capacity	23.0 °C	234 - 251 J/(kg·K)	Typical for Silver
Thermal conductivity	20.0 °C	344 W/(m·K)

Electrical

Property	Temperature	Value
Electrical conductivity	20.0 °C	1.03E+7 S/m
Electrical resistivity	20.0 °C	2.4E-8 Ω·m

Chemical properties

Property	Value
Copper	10 %
Silver	90 %

ASTM B521 Grade R05400: Premium Tantalum Tubes with Superior Corrosion Resistance AgCu20 Soft-Annealed Alloy (+A) – High-Performance Switching Material

Metal