General Studies · Engineering Alloys
Standard Duralumin alloy typically consists of:
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- 15% to 6% tin, 2% to 3% copper, and the remainder aluminium
- 24% to 4.5% magnesium, 3% to 4% copper, and the remainder aluminium
- 33.5% to 4.5% copper, 1.2% to 1.7% manganese, 1.8% to 2.3% nickel, 0.6% each of silicon, magnesium, and iron, and the remainder aluminium
- 43.5% to 4.5% copper, 0.4% to 0.7% magnesium, 0.4% to 0.7% manganese, and the remainder aluminium✓
Correct answer
3.5% to 4.5% copper, 0.4% to 0.7% magnesium, 0.4% to 0.7% manganese, and the remainder aluminium
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