Since the compositions of most cast irons are around the eutectic point (lowest liquid point) of the iron-Ccarbon system, the melting temperatures usually range from 1,150 to 1,200 --C (2,100 to 2,190 --F), which is about 300 --C (540 --F) lower than the melting point of pure iron of 1,535 --C (2,795 --F).read more >>