Engineering Materials
Aluminium bronze contains

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

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Engineering Materials
Combined carbon in iron makes the metal

Hard and gives a fine grained crystalline structure
Soft and gives a fine grained crystalline structure
Hard and gives a coarse grained crystalline structure
Soft and gives coarse grained crystalline structure

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