Engineering Materials
Recrystallization temperature is one

At which crystals first start forming from molten metal when it is cooled
At which change of allotropic form takes place
At which new spherical crystals first begin to form from the old deformed one when a strained metal is heated
At which crystals grow bigger in size

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Engineering Materials
Cobalt in steel

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

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