The cold heading steel coil generally is low and medium carbon quality steel and alloy structure steel to manufacture various standard mechanical element and fastener by cold heading forming. As the element and faster are formed by cold heading process

the cold heading steel has high cleanliness

to control Si and Al content in steel

and has fine grain and spheroidal cementite structure produced by controlled rolling and cooling process to avoid occurring martensite

bainite and Widmannstatten structure and increase plasticity and cold heading properties of steel. The evolution and production of cold heading steel

the effect of chermical compositions on cold heading properties and the characteristics of production process of cold heading steel are presented in this paper.