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      Tungsten in Heat Resisting Steel

In certain cases, where corrosion resistant steels are used in higher temperature ranges, tungsten is added. Heat resisting steels are chromium/nickel steels with up to 6% tungsten. The main use is as valve steels for combustion engines, containing around 2% W. Such steels are, for instance, used for the valves on the outlet side of automotive engines, where the red-hot hardness has to be combined with high temperature corrosion resistance.




 
 
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