AISI 1018 is a low-carbon steel grade known for its good weldability and machinability. It contains approximately 0.18% carbon, which provides a balance of strength and ductility. This makes it suitable for various applications, including manufacturing automotive parts, machinery, and structural components. Due to its properties, AISI 1018 is often used in the production of shafts, gears, and fasteners. It can be easily heat-treated to enhance its hardness and strength, making it a versatile choice in the metalworking industry. Its affordability and availability further contribute to its popularity among engineers and manufacturers.