The primarily used metal in aircraft construction is aluminum. Aluminum is favored in the aerospace industry due to its high strength-to-weight ratio, corrosion resistance, and excellent workability. This makes it ideal for constructing various aircraft components, including wings, fuselage, and internal structures. Its lightweight properties help improve fuel efficiency and overall performance, while its resistance to corrosion ensures durability in various atmospheric conditions. Recent advancements also include the use of aluminum alloys, which enhance strength while maintaining lightness, contributing further to the evolution of modern aerospace engineering and the development of advanced aircraft.