Performance Characteristics: Widely used cold work mould steel, with good quench-hardening ability, good wear resistance , as well hot workability. Applications: Making efficient blanking mould, stamping mould, all kinds of scissors , cold shearing , drilling bushing , gauge, wortle, coining die, thread rolling die, screw thread rolling die, cold extrusion dies . Chemical Composition : C 2.00¡«2.30 Si 0.40 Mn 0.40 S 0.030 P 0.030 Cr 11.50¡«13.00 Ni 0.25 Cu 0.30 Co 1.00 Heat treatment standard: (1) Quenching, 950 ~ 1000 centigrade cold oil; (2) Quenching 980 centigrade, cold oil, 180 centigrade tempering 2 hours Annealing temperature: 800-850 Centigrade. Annealing hardness: 248 HB Max. Destressing temperature: 650 Centigrade Approx. Hot forming temperature: 1050-850 Centigrade. Quenching temperature: 940-970 Centigrade. Hardening media: oil quenching, salt bath 220-250 Centigrade or 500-550 Centigrade, air or compressed air. Quenching hardness: 63-65 HRC. Delivery condition : Annealing. Under the client's requirement