Alloy steel bars are rod-shaped steel products (with cross-sections typically round, square, hexagonal, etc.) made from alloy steel through plastic processing such as rolling or forging. Their core characteristic is the addition of one or more alloying elements (such as chromium, nickel, molybdenum, vanadium, manganese, silicon, etc.) to carbon steel to significantly improve properties such as strength, toughness, wear resistance, corrosion resistance, or hardenability.