Q3: Corrosion

RAW MATERIALS - I can see why you think this as the raw materials do control much of the final chemistry of the steel and therefore we would use specific raw materials to create a stainless steel but the overall stainless steel chemistry is controlled during the liquid steelmaking process. Try again.

STEELMAKING - Correct - during steel making alloying additions can be made to make the steel a stainless steel (containing >12wt % Cr) which gives the steel corrosion protection. Even limited amounts of chromium can increase the corrosive resistance of a steel. However there is another possibility - see if you know the other correct answer.

CASTING - No - try again.

PRIMARY FORMING - No, primary forming is taken to mean the stages which result in a major change in shape such as rolling, forging or drawing and do not have much influence on the corrosive resistance of the steel. Try again.

MANUFACTURING, FABRICATION AND FINISHING - Correct - surface coatings may be applied to the steel to improve its corrosion resistance. These coatings may be barrier coatings (paint, polymeric, tin plating) or sacrificially protective (zinc based). However there is another possibility - see if you know the other correct answer.

PRODUCT/APPLICATION - No, try again as here we mean the final component or product only, for example a steel car body panel or steel plate used in a bridge deck.

Select the correct answer from the options given on the left.