Editing Eutectic system (section)

==Non-eutectic compositions==
Compositions of eutectic systems that are not at the eutectic point can be classified as ''hypoeutectic'' or ''hypereutectic'': 

* ''Hypoeutectic'' compositions are those with a greater composition of species α and a smaller percent composition of species β than the eutectic composition (E) 

* ''Hypereutectic'' compositions are characterized as those with a higher composition of species β and a lower composition of species α than the eutectic composition. 

As the temperature of a non-eutectic composition is lowered the liquid mixture will precipitate one component of the mixture before the other.  In a hypereutectic solution, there will be a ''[[#proeutectoid|proeutectoid]]'' phase of species β whereas a hypoeutectic solution will have a ''[[#proeutectic|proeutectic]]'' α phase.<ref name="smith327"/>