Silver Contact

I Ag Series
Silver and fine silver possess very high electric and thermal conductivity. Low and
stable contact resistance and good processing and welding performance. Because
of a little nickel added into silver, fine silver has higher intensity and thermal-resistance
performance than silver under same contact resistance. Therefore
its fusion resistance and arc burning resistance are better than that of silver.
Under the same application condition, fine silver can take the place of silver.
II AgNi Series
AgNi material with 10-40% of high melting-point metal nickel has high electric
conductivity, low contact resistance and little burning loss. This material has
little transfer when connecting and breaking direct current. AgNi material are
widely used to AC and DC low-voltage devices, such as relays, instruction switches,
can switches, assisting contactors. Instrument switches, optical control switches,
temperature controller and washing machine timers, etc.
III AgCdO Series
AgCdO is the most used contact material at present. CdO obviously increased the
fusion resistance or cohesive resistance of the contacts at the moment of getting
through big current. The sublimation of CdO cools the contact surface. Lowers
the arc energy and extinguishes the arc. Therefore AgCdO can meet the main requirements
of low-voltage apparatus to contacts. Such as arc burning resistance at
big-current switching-on, low and stable contact resistance under various loads
and good arc extinguishing performance. Since Cd pollutes the environment. It is
being substituted by other materials.
VI AgSnO2 Series (Cd free)
This material is produced by dispersing SnO2 Oxidation in silver base using produced
by powder method and keep up superior electric conductivity with improved
anti-arc, anti-fusion, anti-abrasion. This materials, as silver oxidation dispersed
strengthening Type type alloy dispersion, features that SnO2 is thermally stable
and AnO2 is distributed fully on Ag Metrics as a high anti-arc, anti-fusion,
anti-abrasion pre-oxidizer materials. Especially, this material possesses excellent
properties for the use of Relay and Switch at Heavy load Area of DC.
V AgSnO2In2O3 Series (Cd free)
This is the superior material in the properties of anti-fusion and anti-abrasion
under various load conditions because it is Cd-Free material, now one of serious
environmental issues, and it is produced by internal oxidization method alloying
Ag-Sn alloy with many additive elements. This is used for AC and DC Load.
VI AgCu Series
Anti-discoloration decreases depend on the content of copper, while hardness and
mechanical anti-abrasion increases. Contact strength is strong and it is not
usable if there is Sliding Contact tact when it operate