Multiple choice

Stainless steel is an alloy of

  1. nickel and chromium

  2. chromium and tungsten

  3. nickel, manganese and chromium

  4. nickel, cobalt and manganese
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Stainless steel is an iron-based alloy that contains chromium as its essential element, with nickel and manganese as common additional components. Chromium (minimum 10.5%) provides corrosion resistance by forming a protective oxide layer on the surface. Nickel enhances corrosion resistance and mechanical properties, while manganese improves hot working properties and contributes to the alloy's strength and toughness.

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