Alloy steel is a type of steel that is made by combining iron with other elements, such as manganese, nickel, or chromium. These additional elements enhance the properties of the steel, making it stronger, more durable, and resistant to corrosion. Alloy steels are commonly used in construction, automotive, and manufacturing industries due to their improved performance compared to regular carbon steel. The specific properties of alloy steel can vary depending on the types and amounts of alloying elements used. For example, stainless steel is a well-known type of alloy steel that contains a significant amount of chromium, which provides excellent resistance to rust and staining. This versatility makes alloy steel suitable for a wide range of applications.