Which of the following elements is alloyed with iron to produce steel which can resist high temperat...........

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Which of the following elements is alloyed with iron to produce steel which can resist high temperature and also have high hardness and abrasion resistance?

Aluminium

Chromium

Nickel

Tungsten

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Explanation:

Chromium in steel Increases strength, hardness, hardenability, and toughness, as well as creep resistance and strength at elevated temperatures. It improves machinability and resistance to corrosion and it intensifies the effects of other alloying elements. Hence option 2nd is correct.