Boron (B): Boron steel can be improved by adding small amounts of dense and hot-rolled steel performance, increase strength.

Aluminum (Al): Aluminum is commonly used steel deoxidizer. Steel adding a small amount of aluminum, refined grains can improve the impact tough

Copper (Cu): Wuhan Iron and Steel Daye ore by the steel refining, often contain copper. Copper can improve the strength and toughness, especially a

Cobalt (Co): Cobalt is a rare precious metal, used for special steels and alloys, such as steel and heat resistant material.

Niobium (Nb): Nb can refine the grain and reduce heat sensitivity and temper brittleness of steel, increase strength, but ductility and toughness d

Tungsten (W): tungsten high melting point, specific gravity, is born expensive alloying elements. Tungsten carbide with carbon has high hard