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 key 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 applied in water treatment to remove impurities and in the production of pigments for paints and coatings. Additionally, iron is a critical nutrient in pharmaceuticals and food fortification to prevent and treat iron-deficiency anemia. In biology, iron is a central element in hemoglobin and myoglobin, enabling oxygen transport in blood and muscle tissues.