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Question
Explain the following:
In construction work, why is the alloy of aluminium-duralumin used rather than pure aluminium?
Solution
In construction work, the alloy of aluminium-duralumin is used rather than pure aluminium because of the following reasons:
- Duralumin is light and strong, but aluminium is light and not strong.
- Duralumin is unaffected by moist air, while aluminium is affected by moist air.
- Duralumin is corrosion-resistant, while aluminium can undergo corrosion.
- Duralumin has a high tensile strength, while aluminium has a low one.
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