AgMo50 soft annealed (+A)

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Description

Silver-molybdenum contact materials are relatively rare in Europe, more commonly used in the United States. With 20 to 80% Mo they have the highest erosion resistance at medium to high switching capacities. Silver-molybdenum composites with Mo contents of 40 to 80% generally have lower contact resistance than silver-tungsten composites of comparable composition. This is mainly due to the volatility of Mo oxide, which even at relatively low temperatures under the influence of the arc causes a self-cleaning of the contact surfaces. Silver-molybdenum contact materials, such as silver-tungsten, are used in low-voltage circuit breakers.

Related Standards

Degussa

This material data has been provided by WIAM.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

Property	Temperature	Value
Density	20.0 °C	10.2 g/cm³ Show Material materials with Density of 10.2 g/cm³

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	83 GPa Show Material materials with Elastic modulus of 83 GPa	Typical for Silver
Hardness, Vickers	20.0 °C	100 [-] Show Material materials with Hardness, Vickers of 100 [-]
Poisson's ratio	23.0 °C	0.37 [-] Show Material materials with Poisson's ratio of 0.37 [-]	Typical for Silver
Shear modulus	23.0 °C	30 GPa Show Material materials with Shear modulus of 30 GPa	Typical for Silver

Thermal

Property	Temperature	Value	Comment
Coefficient of thermal expansion	23.0 °C	1.9E-5 1/K Show Material materials with Coefficient of thermal expansion of 1.9E-5 1/K	Typical for Silver
Melting point		962 °C Show Material materials with Melting point of 962 °C	Typical for Silver
Specific heat capacity	23.0 °C	234 - 251 J/(kg·K) Show Material materials with Specific heat capacity of 234 - 251 J/(kg·K)	Typical for Silver
Thermal conductivity	20.0 °C	234 W/(m·K) Show Material materials with Thermal conductivity of 234 W/(m·K)

Electrical

Property	Temperature	Value
Electrical conductivity	20.0 °C	3.10E+7 S/m Show Material materials with Electrical conductivity of 3.10E+7 S/m
Electrical resistivity	20.0 °C	3.2E-8 Ω·m Show Material materials with Electrical resistivity of 3.2E-8 Ω·m

Chemical properties

Property	Value
Molybdenum	50 % Show Material materials with Molybdenum of 50 %
Silver	50 % Show Material materials with Silver of 50 %

AgMo50 soft annealed (+A)

Description

Related Standards

Ashby charts

Suggested reading

Properties