Engineering Materials
Steel contains

Elements like phosphorus, sulphur and silicon in varying quantities
80% or more iron
50% or more iron
Alloying elements like chromium, tungsten nickel and copper

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Engineering Materials
Aluminium bronze contains

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

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