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Sterling silver, fine grain silver（Ag、FAg）

Overview: Pure silver and fine-grained silver have high electrical and thermal conductivity, low and stable contact resistance, good soldering and processing properties. Fine-grained silver greatly refines the grain structure of the material due to the addition of a small amount of nickel in the silver. The mechanical strength and temperature resistance of the material are higher than that of silver under the condition that the contact resistance is almost the same. Therefore, the resistance to fusion welding and arc burning resistance is better than that of silver.

Applications: Widely used in small-capacity low-voltage appliances such as relays, timers, auxiliary switches, control switches, etc.

Microstructure

Ag                   200X  FAg                200X

Silver tin oxide（AgSnO₂）

Overview: Silver tin oxide is an environmentally friendly electrical contact material with good resistance to burnout and fusion resistance, resistance to material transfer in DC switching circuits

Strong, the application is very extensive. Mainly include: alloy internal oxidation method, pre-oxidation method, powder metallurgy method, chemical coating method and other manufacturing processes.

Applications: Widely used in all types of contactors, relays, circuit breakers and switches.

  Microstructure

 1#AgSnO₂        200X      8#AgSnO₂       200X    9#AgSnO₂         200X    16#AgSnO₂     200X 

      
  23#AgSnO₂      200X      37#AgSnO₂       200X     40#AgSnO₂        200X    88#AgSnO₂     200X 

Silver cadmium oxide

Overview: Silver cadmium oxide is the most widely used contact material for low voltage electrical appliances. It has good resistance to arc burnout and fusion resistance and low contact resistance from start to finish during use. The production process includes pre-oxidation-sintering-extrusion and internal oxidation. Cadmium oxide content is about 10-20% by weight. However, cadmium and cadmium oxide are not good for health and the environment, and silver cadmium oxide materials are banned in some countries.

Applications: Mainly used in various low voltage switchgear. Such as micro switches, relays, lighting switches, contactors, household appliances switches, various protection switches and some circuit breakers.

Microstructure

 3#AgCdO  200X        6#AgCdO    200X    10#AgCdO    200X   21#AgCdO  200X   27#AgCdO  200X    28#AgCdO  200X

Silver nickel（AgNi）

Overview: Silver nickel is more resistant to fusion and burnout than pure silver or fine grain silver. These two properties of the product are improved due to the increased nickel content of the high melting point. All silver-nickel materials are very workable and easy to solder. When the DC is turned on and off, the material transfer is small, and silver nickel is an environmentally friendly material.

Applications: Silver nickel products are widely used in low voltage switchgear. Such as relays, small current contactors, light switches, temperature controllers, protection switches (with asymmetric matching contacts with AgC, AgZnO, AgSnO2, etc.).

Microstructure

Silver tin oxide indium oxide(AgSnO?In?O?)

Overview: Silver tin oxide indium oxide is an environmentally friendly electrical contact material with good resistance to burnout and fusion resistance. It has strong resistance to material transfer in DC switching circuits and is widely used. Mainly include: alloy internal oxidation method, pre-oxidation method, powder metallurgy method, chemical coating method and other manufacturing processes.

Applications: Widely used in all types of contactors, relays, circuit breakers and switches, etc.