Used in construction and manufacturing due to its strength and durability, especially in the form of steel which is an alloy of iron and carbon. Essential in the production of machinery, vehicles, ships, and infrastructure like bridges and buildings. Plays a key role in the transportation industry for making rails, trucks, and automobiles. Widely used in tools and industrial equipment because of its magnetic properties and ability to be easily shaped when heated. Also important in the production of cast iron and wrought iron for various engineering and architectural applications. In smaller amounts, it is used in dietary supplements and food fortification to prevent iron deficiency anemia.