Engineering Materials
Aluminium bronze contains

90% magnesium and 9% aluminium with some copper
92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg
10% aluminium and 90% copper
94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe

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Engineering Materials
Amorphous material is one

In which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid
In which atoms align themselves in a geometric pattern upon solidification
Which emits fumes on melting
Which is not attacked by phosphorous

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