Engineering Materials
Monel metal contains

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

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Engineering Materials
Tungsten in steel

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

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Engineering Materials
The unit cells

Have the same orientation and their similar faces are parallel
Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal
All of these
May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice

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