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What are Bimetals?

Encyclopedia
Field: Industry News
Electrical Engineer
10Year<
China


What are Bimetals?


Bimetal Definition


A bimetal is defined as an object composed of two separate metals joined together, retaining their individual attributes.

 


Properties of Bimetals


Bimetals combine the distinct qualities of each metal into a single functional unit.


 

Working Principle


imetals bend when heated or cooled due to the different thermal expansion rates of the metals.


 

 

 

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l is the initial length of the object,

 

Δl is the change in length,

 

Δt is the change in temperature,

 

The unit of αL is per °C.


 

 

 

 

Common Combinations


Common bimetal combinations include iron and nickel, brass and steel, and copper and iron.

 

 

 

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Applications of Bimetals


  • Thermostats

  • Thermometers

  • Protective devices

  • Clocks

  • Coins


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