Alloy steel is a type of steel with alloying elements other than carbon added to improve its properties. Some of the common additions to alloy steel include: chromium, cobalt, columbium, molybdenum, manganese, nickel, titanium, tungsten, silicon, and vanadium. Alloy steels are known for their enhanced properties compared to plain-carbon steel, such as: corrosion resistance, hardness, strength, wear resistance, and toughness. Alloy steels are used to make fabrication tooling and end products across just about all industries. The exact grade and composition of the alloy steel can be tailored to the requirements of the application.