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 :
Annealed