Engineering Materials
Addition of manganese to aluminium results in

One of the best known age and precipitation hardening systems
Improvement of corrosion resistance
Improvement of casting characteristics
Improving machinability

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Engineering Materials
Dow metal contains

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

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