Iron is used in a variety of applications, including the production of steel, cast iron, and wrought iron. The physical properties of iron are: a melting point of iron is 1538 ̊C, a boiling point of iron is 2862 ̊C, a specific gravity of 7.874 (at 20 ̊C), hardness of 4-5 on the Mohs scale, and tensile strength of 74-130 GPa.Web