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      1. Product solutions /
        Contact assembly product description

        Application range

        Contactors, relays, circuit breakers, switches, etc.

        main products

        AgZnO  ,  AgSnO?  ,  AgCdO  ,  AgC   AgW  ,  AgWC  ,  AgNi  . 

        Welding or riveting contact assembly of equal contact with copper alloy or copper。

        product data Applications

        Silver zinc oxide(AgZnO)



        Overview: Silver zinc oxide has better resistance to soldering and burnout, and its contact resistance is higher than that of silver cadmium oxide. Silver zinc oxide can be produced by a pre-oxidation-sintering-extrusion, a mixing-molding-sintering process, and an internal oxidation process. Silver zinc oxide is an environmentally friendly material.

        Applications: Mainly used for circuit breakers, especially universal circuit breakers. And for motor protection switches, leakage circuit breakers, AC relays.


        Microstructure

        1.png 1.png 1.png

        2#AgZnO         200x  3#AgZnO      200x   6#AgZnO       200x

         Material properties

        Sheet

        1#AgZnO

        2#AgZnO

        3#AgZnO

        4#AgZnO

        5#AgZnO

        6#AgZnO

        ZnO content (wt.%)

        8±1

        10±1

        10±1

        8±1

        8±1

        10±1

        Density (g/cm3)

        ≥9.70

        ≥9.50

        ≥9.55

        ≥9.70

        ≥9.50

        ≥9.40

        Resistivity (μΩ·cm)

        ≤2.50

        ≤2.50

        ≤3.50

        ≤3.40

        ≤2.60

        ≤2.70

        Hardness

        ≥80

        ≥80

        ≥74

        ≥69

        ≥63

        ≥68

        Manufacturing process

        Pre-oxidation-sintering-extrusion

        Internal oxidation

        Mixed-molding-sintering


        Wire

        1#AgZnO

        2#AgZnO

        ZnO content (wt.%)

        8±1

        10±1

        Density (g/cm3)

        ≥9.65

        ≥9.60

            Resistivity(μΩ·cm)

        ≤2.25

        ≤2.35

           Hardness

        ≥80

        ≥85

        tensile strength(MPa)

        285~350

        285~350

        Extension rate%

        15-25

        12-20

           Manufacturing process

        Pre-oxidation-sintering-extrusion


        product type


        1#AgZnO

        2#AgZnO

        3#AgZnO

        4#AgZnO

        5#AgZnO

        6#AgZnO

        Wire         



             Strip          





        Touch piece   

          Composite sheet   





        Rivet  






        Silver tin oxide(AgSnO2)



        Overview: Silver tin oxide is an environmentally friendly electrical contact material with good resistance to burning and fusion welding. 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.


        Microstructure

        1.png 1.png 1.png 1.png

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

        1.png 1.png 1.png 1.png

        16#AgSnO2     200X   37#AgSnO2       200X   40#AgSnO2        200X    88#AgSnO2     200X 

        Material properties

        Sheet

        1#AgSnO2

        8#AgSnO2

        12#AgSnO2

        37#AgSnO2

        40#AgSnO2

        SnO2 content (wt.%)

        10±1

        12±1

        12±1

        12±1

        14±1

        Density (g/cm3)

        ≥9.70

        ≥9.60

        ≥9.50

        ≥9.50

        ≥9.40

        Resistivity(μΩ·cm)

        ≤2.40

        ≤2.80

        ≤2.50

        ≤2.80

        ≤2.90

        Hardness

        ≥70

        ≥75

        ≥75

        ≥75

        ≥80

        Manufacturing process

        Pre-oxidation-sintering-extrusion

         Mixing powder-sintering-extruding


        Wire

        1#AgSnO2

        9#AgSnO2

        91#AgSnO2

        23#AgSnO2

        13#AgSnO2

        SnO2 content(wt.%)

        10±1

        10±1

        12±1

        12±1

        15±1

         Density(g/cm3)

        9.90

        9.95

        9.85

        ≥9.85

        9.5

          Resistivity (μΩ·cm)

        2.15

        2.30

        2.30

        ≤2.30

        2.18

        Hardness

        85

        95

        70

        ≥75

        85

        tensile strength(MPa)

        295-350

        290-385

        230-350

        230-285

        250-330

        Extension rate%

        15-25

        15-25

        15-25

        18-30

        15-25

        Manufacturing process

        Pre-oxidation-sintering-extrusion

        Chemical coating

        Mixing powder-sintering-extruding


        product type


        AgSnO2

        AgSnO2In2O3

        SnO2 content (wt.%)

        8±1

        10±1

        12±1

        15±1

        6±1

        8 ±1

        9±1

         Wire       


         Strip       


        Touch piece     

        Composite sheet      




                 Rivet        


        Silver cadmium oxide(AgCdO)



        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

        1.png 1.png 1.png 1.png 1.png 1.png

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

        Material properties

        Wire

        6#AgCdO

        8#AgCdO

        9#AgCdO

        1#AgCdO

        3#AgCdO

        5#AgCdO

        10#AgCdO

        CdO content (wt.%)

        10±1

        13.5±1

        15±1

        10±1

        12±1

        15±1

        17±1

        Density(g/cm3)

        ≥10.05

        ≥9.95

        ≥9.90

        ≥10.10

        ≥10.05

        ≥9.95

        ≥9.80

        Resistivity(μΩ·cm)

        ≤2.25

        ≤2.35

        ≤2.40

        ≤2.10

        ≤2.15

        ≤2.25

        ≤2.40

        Hardness

        ≥70

        ≥75

        ≥75

        ≥70

        ≥70

        ≥75

        ≥75

        tensile strength(MPa)

        260-350

        260-380

        260-380

        260-350

        260-380

        260-380

        260-400

        Extension rate%

        6-20

        6-20

        6-20

        8-25

        8-25

        8-25

        5-25

        Manufacturing process

        Pre-oxidation-sintering-extrusion

        Internal oxidation


        product type


        6#AgCdO

        7#AgCdO

        8#AgCdO

        9#AgCdO

        1#AgCdO

        3#AgCdO

        5#AgCdO

        10#AgCdO

        Wire      2.png   

        Strip     3.png






        Touch piece     4.png


        Composite sheet    5.png






        Rivet    1.png






        Silver graphite(AgC)



        Overview: Silver graphite has high resistance to soldering and low contact resistance. As the graphite content increases, its resistance to fusion increases. Silver graphite material has self-lubricating properties when used as a sliding contact.

        Scope of application: Mainly used for protection switches, such as miniature circuit breaker MCB, molded case circuit breaker MCCB, leakage protection switch or motor protection switch, often forming asymmetric pairing contacts with AgNi, AgW, AgWC or Cu.


        Microstructure

        1.png


        Material properties


        2#AgC

        1#AgC

        3#AgC

        6#AgC

        7#AgC

        8#AgC

        C content (wt.%)

        3±0.5

        4±0.5

        5±0.5

        3±0.5

        3.8±0.5

        4±0.5

        Density (g/cm3)

        ≥9.10

        ≥8.9

        ≥8.60

        ≥9.10

        ≥9.00

        ≥8.9

           Resist(μΩ·cm)

        ≤2.10

        ≤2.20

        ≤2.30

        ≤2.10

        ≤2.20

        ≤2.20

          Hardness

        ≥42

        ≥42

        ≥42

        ≥42

        ≥42

        ≥42

           Manufacturing process

        Sintering-squeeze

        product type


        2#AgC

        1#AgC

        3#AgC

        6#AgC

        7#AgC

        8#AgC

                   Wire    2.png       







                  Strip 3.png       




                  Touch piece     4.png  

        Composite sheet      5.png







                  Rivet      01.png







        Graphite fiber type

                  Remarks

        Note: 6#, 7#, 8#AgC strips and sheets can be coated with a layer of soldering material on the soldering surface, such as BAg15CuP

         

        Silver tungsten(AgW)



        Overview: Silver-tungsten contacts have high melting resistance and arc corrosion resistance due to their high melting point and high hardness. They also have good electrical and thermal conductivity.

        Applications: Silver tungsten materials are mainly used for low-voltage molded case circuit breakers and universal circuit breakers and protection switches.


        Microstructure

        1.png

        Material properties


        1#AgW

        2#AgW

        3#AgW

        4#AgW

        5#AgW

        6#AgW

        Ag content  (wt.%)

        50±2

        45±2

        40±2

        35±2

        30±2

        25±2

        Density(g/cm3)

        ≥13.15

        ≥13.55

        ≥14.00

        ≥14.50

        ≥14.90

        ≥15.40

         Resistivity(μΩ·cm)

        ≤3.00

        ≤3.20

        ≤3.40

        ≤3.60

        3.80

        ≤4.20

        Hardness

        ≥100

        ≥110

        ≥120

        ≥130

        ≥145

        ≥160

        Manufacturing process

        Infiltration



        product type


        1#AgW

        2#AgW

        3#AgW

        4#AgW

        5#AgW

        6#AgW

           Wire        2.png







           Strip        3.png







          Touch piece      4.png

           Composite sheet        5.png







            Rivet       01.png








        Silver tungsten carbide graphite(AgWCC)



        Overview: Silver tungsten carbide contact material with high melting point tungsten carbide has high hardness, low mechanical wear, low welding tendency and relatively stable contact resistance. Silver tungsten carbide contacts are produced by powder metallurgy infiltration.

        Applications: Mainly used for high-load switching devices, such as circuit breakers, leakage switches. In many cases, it is used in asymmetric pairing with silver graphite.



        Metallographic organization

        1.png

        Material properties


        6#AgWC

        1#AgWC

        5#AgWC

        3#AgWC

           Ag content  t(wt.%)

        65±2

        60±2

        50±2

        35±2

         Density (g/cm3)

        ≥11.50

        ≥11.80

        ≥12.20

        ≥13.00

        Resistivity (μΩ·cm)

        ≤3.30

        ≤3.50

        ≤4.50

        ≤5.20

         Hardness

        ≥100

        ≥125

        ≥135

        ≥155

         Manufacturing process

        Infiltration 

        product type


        6#AgWC

        1#AgWC

        5#AgWC

        3#AgWC

          Wire                 2.png





          Strip                 3.png





          Touch piece                4.png

          Composite sheet              5.png





           Rivet             01.png






        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

        1.png

        Material properties

         Sheet 

        1#AgNi

        3#AgNi

        6#AgNi

        8#AgNi

        11#AgNi

        12#AgNi

        Nickel contentwt.%)

        10±1

        12±1

        20±1

        30±1

        30±1

        40±1

        Density (g/cm3)

        ≥10.20

        ≥10.20

        ≥10.10

        ≥10.00

        ≥9.70

        ≥9.50

        Resistivity (μΩ·cm)

        ≤2.30

        ≤2.50

        ≤2.40

        ≤2.50

        ≤2.70

        ≤3.40

        Hardness HV

        ≥50

        ≥60

        ≥55

        ≥60

        ≥75

        ≥80

        Manufacturing process

         Sintering-squeeze


        Mixed-molding-sintering


        Wire 

        1#AgNi

        3#AgNi

        5#AgNi

        25#AgNi

        6#AgNi

        8#AgNi

         Nickel content (wt.%)

        10±1

        12±1

        15±1

        15±1

        20±1

        30±1

         Density(g/cm3)

        ≥10.25

        10.20

        ≥10.15

        ≥10.15

        10.05

        9.80

         Resistivity  (μΩ·cm)

        ≤1.95

        2.05

        ≤2.05

        2.10

        2.15

        2.50

         Hardness HV

        ≥75

        ≥70

        ≥80

        80

        80

        80

        tensile strength(MPa)

        240-350

        240-450

        250-360

        280-460

        260-380

        260-380

        Extension rate%

        5-30

        5-30

        5-30

        5-28

        2-28

        2-25

        Manufacturing process

        Sintering-squeeze

        product type


        1#AgNi

        3#AgNi

        5#AgNi

        6#AgNi

        8#AgNi

        12#AgNi

        25# AgNi

        Wire          2.png  


        Strip     3.png


        Touch piece       4.png

        Composite sheet      5.png




        Rivet      01.png






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