Factory wholesale Copper Electrical Contacts – POWDER METAL CONTACTS – ZHJ
China Factory wholesale Copper Electrical Contacts - POWDER METAL CONTACTS - ZHJ Manufacturer and Supplier | ZHJ Detail:
| Application: |
| Contactors, circuit breakers, thermostats, intelligent switches, etc |
| The Material: |
| AgC,AgW,AgWC,AgWCC,AgNiC,CuW |
Microstructure
General Description
AgC contact materials show a very high resistance against contact welding and low contact resistance. Resistance against welding increases with increasing graphite content. AgC materials have self-lubricating behavior when used as sliding contacts.
Application Scope
Mainly used in protective switches such as MCBs, MCCBs, residual current protective switches, or motor protective switches. Application is normally in asymmetric match with AgNi,AgW, AgWC or Cu.
Material Properties
| AgC | AgC | AgC | AgC | AgC | 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/cnre) | ≥9.10 | ≥8.9 | ≥8.60 | ≥9.10 | ≥9.00 | ≥8.9 |
| Elec.Resistivity (.10•cm) | ≤2.10 | ≤2.20 | ≤2.30 | ≤2.10 | ≤2.20 | ≤2.20 |
| Hardness HV | ≥42 | ≥42 | ≥42 | ≥42 | ≥42 | ≥42 |
| Manufacturing process |
Sintering-Extruding |
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Product Types
Microstructure
General Description
Contacts made of AgW show a high anti-welding resistance and a high resistance to arc erosion due to high melting point and high hardness of W, they also have a good electrical and thermal conductivity.
Application Scope
AgW materials are mainly used in low voltage MCCB and ACB and protective switches.
Material Properties
| AgW | AgW | AgW | AgW | AgW | 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 |
| EIec.Resistivity (1.10•cm) | ≤3.00 | ≤3.20 | ≤3.40 | ≤3.60 | ≤3.80 | ≤4.20 |
| Hardness HV | ≥100 | ≥110 | ≥120 | ≥130 | ≥145 | ≥160 |
| Manufacturing process | Infiltration | |||||
Product Types
Microstructure
General Description
The AgWC contact materials containing the refractory component WC have high hardness and resistance to mechanical wear, a low tendency towards contact welding, and a relatively stable contact resistance in service. AgWC contacts are produced by powder metallurgy infiltration.
Application Scope
Mainly used in heavy-duty switching devices, such as circuit breakers. residual current circuit breakers. In many cases they are used in asymmetric match with AgC
Material Properties
| AgWC | AgWC | AgWC | AgWC | |
| Ag Content(wt.%) | 65±2 | 60±2 | 50±2 | 35±2 |
| Density (g/cm3) | ≥11.50 | ≥11.80 | ≥12.20 | ≥13.00 |
| Elec.Resistivity (1.10•cm) | ≤3.30 | .A.50 | 4.50 | 5.20 |
| Hardness HV | ≥100 | ≥125 | ≥135 | ≥155 |
| Manufacturing process | Infiltration | |||
Product Types
Microstructure
General Description
Due to high Ag content , AgWCC contacts have low contact resistance. They have very high anti-welding properties due to containing tungsten carbide and graphite with high melting point. AgWCC contacts are manufactured by sintering.
Application Scope
Mainly used in heavy-duty switching devices, such as circuit breakers. residual current circuit breakers. In many cases they are used in asymmetric match with AgNi, AgW or AgWC.
Material Properties
| AgWCC | AgWCC | AgWCC | AgWCC | |
| Ag Content(wt.%) | 85±1 | 75±1 | 79±1 | 74.5±1 |
| Density (g/cm3) | ≥9.40 | ≥10.25 | ≥8.80 | ≥10.50 |
| Elec.Resistivity (u0•cnn) | ≤3.40 | ≤3.40 | ≤3.80 | ≤3.45 |
| Hardness HV | ≥50 | ≥80 | ≥60 | ≥75 |
| Manufacturing process | Mixing-Compacting-Sintering | |||
Product Types
Microstructure
General Description
AgNiC contacts combine the advantages ofAgNi and AgC contacts. They have good resistance to electrical erosion and anti-welding properties.
Application Scope
AgNiC contacts are mainly used in MCCB, ACB.
Material Properties
| AgNiC | AgNiC | 3AgNiC | |
| Ag Content(wt.%) | 67±1 | 73±1 | 94±1 |
| Density (g/cm3) | ≥8.70 | ≥9.10 | ≥8.50 |
| Elec.Resistivity (.10•cm) | ≤4.50 | ≤3.50 | ≤3.50 |
| Hardness HV | ≥50 | ≥60 | ≥30 |
| Manufacturing process | Mixing-Compacting-Sintering | ||
Product Types
Microstructure
General Description
CuW contact materials have excellent resistsnce against arc erosion and anti-welding properties up to very high curret. CuW contacts are produced in a great variety of shapes by means of powder metallurgy (pressing / sintering or infiltration). The tungsten content is 50%-80%.
Application Scope
CuW contacts are mainly used in medium and high voltage switchgears. Typical applications are in high voltage circuit breakers, load switches, transformer switches tap changers and low voltage arcing contacts.
In addition, CuW materials are widely used as electrodes, primarily for welding.
Material Properties
| CuW | CuW | CuW | |
| Cu Content (wt.%) | 50±2 | 40±2 | 30±2 |
| Density (g/cm3) | ≥11.85 | ≥12.75 | ≥13.80 |
| EIec.Resistivity (p0 cm) | ≤3.20 | ≤3.70 | ≤4.10 |
| Hardness HV | ≥115 | ≥140 | ≥175 |
| Manufacturing process | Infiltration | ||
Product Types
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We can easily usually fulfill our respected customers with our very good top quality, very good price tag and excellent support due to we have been more expert and much more hard-working and do it in cost-effective way for China Factory wholesale Copper Electrical Contacts - POWDER METAL CONTACTS - ZHJ Manufacturer and Supplier | ZHJ , The product will supply to all over the world, such as: Puerto Rico , Sevilla , Liberia , We expect to provide products and services to more users in global aftermarket markets; we launched our global branding strategy by providing our excellent products all over the world by virtue of our well reputed partners letting global users keep pace with technology innovation and achievements with us.
By Roxanne
from UAE
- 2017.06.25 12:48
The company's products very well, we have purchased and cooperated many times, fair price and assured quality, in short, this is a trustworthy company!
By Helen
from Wellington
- 2017.08.15 12:36
