Multiple choice

Stainless steel is an alloy of

  1. iron, carbon and nickel

  2. iron and manganese

  3. iron, chromium and zinc

  4. iron, chromium and nickel
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Stainless steel is primarily an alloy of iron, chromium (10-30%), and nickel. Chromium provides corrosion resistance by forming a passive oxide layer, while nickel enhances strength and corrosion resistance. Carbon is present in small amounts but not a primary alloying element.

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