Engineering Materials
Dow metal contains

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

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Engineering Materials
A coarse grained steel

Is less tough and has a less tendency to distort during heat treatment
Is less tough and has a greater tendency to distort during heat treatment
Is more ductile and has a greater tendency to distort during heat treatment
Is more ductile and has a less tendency to distort during heat treatment

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