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Silver alloy electrical contacts
Silver (Ag) in the material used for electrical contacts can be listed as the first. It has the highest metal conductivity, its value is 106% IACS. The disadvantage is that silver is easy to form a black sulfide (AgS) sulfide film, easy to wear and low hardness, but because of the physical properties of fine silver is widely used as a low energy circuit electrical contacts. Mainly used in radio communication with the micro-switch, controlled switches, thermostats, relays, calculators, computers and other small current electrical field. The main products are silver contacts, Ag/Cu- silver / copper composite electrical contacts, silver / copper-nickel alloy -Ag/CuNi (8 ~ 10) composite electrical contact.

Silver contact of the mechanical and physical properties of materials
Type
Ag
Ag %
99.95
HardnessHV-N/mm2
650~950
Density g/cm3
10.48
Tensile strength MPa
320~400
Resistivity cm
1.75
Stretching %
3

 

 
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