Ultra-fine iron powder is one of the fundamental raw materials in the powder metallurgy industry. Due to its large specific surface area and reactivity, it exhibits electrical, magnetic, optical, and catalytic properties, as well as reactivity in chemical reactions. As a result, it has a wide range of applications, primarily in powder metallurgy, manufacturing mechanical parts, producing friction materials, tribological materials, hard materials, magnetic materials, lubricants, and their products. Secondly, iron powder is extensively used in chemicals, cutting tools, heat-resistant materials, welding rods, and more. In recent years, iron powder has also shown great potential in various fields such as electromagnetism, biology, and optics.