Q. Which of the following are the main components of stainless steel?
Answer: Iron, Chromium and Nickel
Notes: Stainless steel is an alloy of Iron with a minimum of 10.5% Chromium. Chromium produces a thin layer of oxide on the surface of the steel known as the 'passive layer' that prevents any further corrosion of the surface. Besides, Nickel and Molybdenum are added to impart other useful properties such as enhanced formability and increased corrosion resistance.