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Bimetal Contact

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Bimetal Contact consist of soft, high-conductivity, oxidation-resistant materials used as the makeup of electrical components. They are the materials in a system through which an electrical current flows; such as:

  • Relays
  • Switches
  • EDM applications
  • Circuit breakers
  • Earth leakage breakers

Bimetal contact rivets comes in a variety of sizes. You can find options both small to extremely large, depending on your voltage requirements and usage.

BIMETAL CONTACT MATERIAL PROPERTIES

When choosing the best Bimetal contact for your application, it is important to keep in mind the six most important properties:

  • Conductivity
  • Size
  • Cycle Life
  • Brass
  • Current Load
  • Corrosion Resistance

HARDNESS

This measures how resistant materials are to various kinds of permanent deformations from an applied force. It is dependant on five factors:

  • Ductility
  • Elasticity
  • Cycle Life
  • Toughness
  • Current Load
  • Tensile Strength

CORROSION RESISTANCE

Corrosion resistance of electrical contacts refers to a material’s ability to resist chemical decay. Any material with little corrosion resistance will decay faster than ones with high resistance.

BIMETAL CONTACT CONDUCTIVITY

Conductivity refers to the measure of a materials ability to conduct or carry an electric current. You will see this as a percent of a copper standard (ex: 100% International Annealed Copper Standard or IACS) Silver, which has the highest conductivity, has an IACS of 105.

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Material AgNi10 AgNi15 AgNi20
Density [g/cm3] 10.3 10.2 10.1
Electrical Conductivity [m/(Ω.mm2)] 54 48 46
Hardness Soft [HV1] 50 55 60
Tensile Strenght Soft[Mpa] 240 260 270
Elongation [%] 38 34 32

MICROSTRUCTURE

The Ni particles are deformed along the direction of extrusioii into fibres

Bimetal Contact
gNi10 Longitudinal Sectional (parallel to the diretion of extrusion)
Bimetal Contact
gNi10 Cross Section
Bimetal Contact
AgNi10 Cross Section
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