Performance Characteristics:
Vacuum deairing with fine steel, it is easy for cutting after quenching ,high hardness, good abrasion resistance ,dimension stability and minimal distortion.
Applications:
It is suitable for cutting tools, such as broach, filament hammer and gauge and complex shape of cold mould, plastic mould, precise screw, etc.
Chemical Composition (%):
|
C |
Si |
Mn |
W |
Ni |
Cr |
Cu |
S |
P |
|
0.85~0.95 |
≤0.40 |
0.90~1.20 |
0.70~1.20 |
≤0.25 |
0.50~0.80 |
≤0.30 |
≤0.030 |
≤0.030 |
Heat Treatment Standard:
Quenching, 800 ~ 830 centigrade cold oil.
Forging:
Oil quenching cold die has crack sensitivity,so it should not be quickly heated,it had better for a preheating in 650-750 centigrade .The temperature of forging is 1130-1150 centigrade, eventually temperature should be more than 800-850 centigrade, steel ingot take upper limit temperature.while blank forging take lower temperature.
Delivery condition:
Annealed
