Engineering Materials
White metal contains

63 to 67% nickel and 30% copper
Silver and chromium
88% copper and 10% tin and rest zinc
Alloy of tin, lead and cadmium

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Engineering Materials
Cobalt in steel

Gives ductility, toughness, tensile strength and anti corrosion property
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

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