Chemistry · Macromolecules
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The alloy Duralumin is composed of ______ of Al.
- A
95%
- B
90%
- C
85%
- D
80%
Classical Duralumin contains about 95% aluminum, with the rast mainly copper, magnesium, and manganese. The small percentage of alloying metals makes it strong yet lightweight. It is widely used in aircraft and structural applications due to its high strength-to-weight ratio.
Correct! Duralumin is composed of approximately 95% aluminum (Al), which contributes to its lightweight and strength.
Incorrect. While 90% aluminum is a significant amount, Duralumin actually contains about 95% aluminum.
Incorrect. 85% aluminum is less than the actual composition of Duralumin, which is around 95% aluminum.
Incorrect. Duralumin contains significantly more aluminum than 80%, with its actual composition being about 95% aluminum.
Tagged under Chemistry · Macromolecules · 2018