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How much copper is present in Y-alloys?

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in Engineering Material & Metallurgy by (773k points)
How much copper is present in Y-alloys?

(a) 4%

(b) 2%

(c) 1.5%

(d) 1%

I had been asked this question in an internship interview.

The above asked question is from Aluminium and its Alloys, Zinc and its Alloys in division Non Ferrous Materials of Engineering Material & Metallurgy

1 Answer

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Best answer
Correct answer is (a) 4%

The best explanation: Y-alloy is an important type of Al-Cu alloy. Similar to duralumin, it contains 4% copper. Addition of 2% nickel and 1.5% magnesium is done to make Y-alloys.

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