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

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Q: 129 (IAS/1996)
Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance ?

question_subject: 

Science

question_exam: 

IAS

stats: 

0,38,70,26,38,33,11

keywords: 

{'steel': [0, 1, 1, 0], 'aluminium': [1, 0, 3, 2], 'high hardness': [0, 1, 0, 0], 'iron': [0, 0, 1, 1], 'elements': [0, 0, 2, 5], 'tungsten': [0, 0, 0, 2], 'abrasion resistance': [0, 1, 0, 0], 'nickel': [1, 0, 0, 0], 'chromium': [2, 1, 9, 1], 'high temperatures': [0, 2, 1, 2]}

Answer 2, Chromium, is correct. Chromium alloyed with iron creates stainless steel, known for its corrosion and heat resistance. It also adds hardness and abrasion resistance.

Option 1, Aluminium, is incorrect as while it can be alloyed with steel, it isn`t used to make steel resistant to high temperatures, hardness and abrasion resistance.

Option 3, Nickel, while it makes the steel more ductile and adds toughness, it doesn`t necessarily make it resist high temperatures or add hardness and abrasion resistance.

Option 4, Tungsten, while it increases steel`s hardness at high temperatures, it is not used to provide overall high-temperature resistance, hardness and abrasion resistance. But it`s primarily used in high-speed steel.

In Summary, Chromium stands out for its contribution in making steel resist high temperatures and adding to its hardness and abrasion resistance.

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