The Requirements of Tungsten Points’ Material on Switches and Appliances

The requirements of tungsten points’ material on switches and appliances are shown as follows:

1. Mechanical properties requirements: High temperature resistance, high hardness, good ductility and excellent toughness and other performance requirements.

2. Physical properties requirements:
With low resistivity, high boiling point, low vapor pressure,  good thermal stability, large heat capacity,  high melting point, good thermal conductivity, a high electron work function and other performance requirements .

3. Chemical properties requirements:
With good corrosion resistance; not easily oxidized in the atmosphere, curing, carbonization and difficult to form conductive compounds, if the phenomenon appears, it should have high volatility.

4. The electrical contact properties requirements:
With arc erosion resistance, welding and small metal transfer tendencies, low and stable contact resistance and other performance requirements

5. Processing performance requirements:
With easy brazing and welding performance requirements and others.



 

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 Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

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