Engineering Materials
Steel contains

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

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Engineering Materials
Nickel in steel

Improves cutting ability and reduces hardenability
Gives ductility, toughness, tensile strength and anti-corrosion properties
Improves wear resistance, cutting ability and toughness
Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties

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