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Comparative ductility among common engineering metals Among the following, which material typically exhibits the greatest ductility at room temperature? Choose the correct option.

Difficulty: Easy

Mild steel
Copper
Nickel
Aluminium

Correct Answer: Copper

Explanation:

Concept
Room-temperature ductility (elongation/reduction of area) is very high for copper; it is one of the most ductile common metals (exceeded mainly by noble metals like gold/silver). Mild steel, nickel, and aluminium are ductile as well, but copper generally shows the highest ductility among the listed options.

Final Answer
Copper

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