Engineering Materials
Beryllium bronze contains

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

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Engineering Materials
Cobalt in steel

Improves wear resistance, cutting ability and toughness
Improves cutting ability and reduce hardenability
Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties
Gives ductility, toughness, tensile strength and anti corrosion property

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Engineering Materials
Aluminium bronze contains

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

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