Engineering Materials
Sulphur in steel

Acts as deoxidiser
Reduces the grain size
Lowers the toughness and transverse ductility
Decreases tensile strength and hardness

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Engineering Materials
The unit cells

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

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