Alloy steel is a type of steel that is made by combining iron with other elements, such as carbon, manganese, nickel, or chromium. These additional elements enhance the properties of the steel, making it stronger, more durable, and resistant to wear and corrosion. Alloy steel is commonly used in construction, automotive, and manufacturing industries due to its versatility. There are various grades of alloy steel, each designed for specific applications. For example, high-strength low-alloy (HSLA) steel is used in structural applications, while stainless steel is known for its resistance to rust and staining. The unique properties of alloy steel make it suitable for a wide range of uses.