Which of the following alloy contain Al, Cu, Mg and Mn?

Which of the following alloy contain Al, Cu, Mg and Mn?
  1. Babbitt metal
  2. Stainless steel
  3. Spiegeleisen
  4. Duralumin

Solution

Duralumin is an alloy, a trade name given to the earliest types of the age hardenable aluminum alloys. It is an alloy made up of $90 \%$ aluminum, $4 \%$ copper, $1 \%$ magnesium and $0.5 \%$ to $1 \%$ manganese. It is a very hard alloy.

Asked in: MHT CET 2020 (19 Oct Shift 1)

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