Engineering Materials
Beryllium bronze contains

99% copper and 1% beryllium
97.75% copper and 2.25% beryllium
60% copper and 40% beryllium
80% copper and 20% beryllium

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Engineering Materials
Dow metal contains

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

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