A general term for plastic processing such as cold die forging, cold extrusion, and cold heading. Cold forging is a forming process below the recrystallization temperature of the material, and is forging at a temperature below the recovery temperature. Forging in the production of unheated blanks is called cold forging. Cold forging materials are mostly aluminum and some alloys, copper and some alloys, low carbon steel, medium carbon steel and low alloy structural steel with less deformation resistance and good plasticity at room temperature. Cold forgings have good surface quality and high dimensional accuracy, which can replace some cutting processes. Cold forging can strengthen the metal and increase the strength of the part.