The cutting ability of free cutting steel is better than that of common carbon steel to get better surface degree of finish of products. With developing of automobile industry

the consumption of free cutting steel continuously increases. At present

the cutting steels are wide produced by flow sheet of arc furnace- secondary refining- concocting in abroad. The standardized series products of free cutting steel have been developed and with wide using concasting technology

the free cutting steels have uniform cutting properties. Now the grades of free cutting steel include free cutting carbon steels

carburizing steels

quenching and tempering steels and stainless steels

and steadily add to the steel grades of die steels

high manganese steels

heat resistant steels and high speed and tool steels. Base on the development of free cutting steel at home and abroad

the development trend of production process and steel grade.