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
|
Si
|
Mn
|
S
|
P
|
Cr
|
Ni
|
Cu
|
Co
|
|
2.00~2.30
|
≤0.40
|
≤0.40
|
≤0.030
|
≤0.030
|
11.50~13.00
|
≤0.25
|
≤0. 30
|
≤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