Iron is widely used in the production of steel, which is essential for construction, automotive manufacturing, and infrastructure development due to its strength and durability. It serves as a critical component in machinery, tools, and industrial equipment. In powdered form, iron is used in metal injection molding and as a catalyst in chemical processes like ammonia synthesis via the Haber process. Iron compounds are employed in water treatment to remove impurities and in the formulation of pigments for paints and coatings. Additionally, iron is a key ingredient in nutritional supplements and fortified foods to prevent and treat iron-deficiency anemia. In biology, iron is vital for oxygen transport in hemoglobin and electron transfer in various enzymes.