Performance Characteristics:
Hot work mould steel, high strength ,high abrasion resistance
Applications:
Various large-sized mirror plastic mould, precision plastic mould, like cars accessies, home appliances, electronic equipment plastic mould.
Chemical Composition (%):
|
C
|
Si
|
Mn
|
Cr
|
Mo
|
P
|
S
|
|
0.50-0.60
|
0.25-0.60
|
1.20-1.60
|
0.60-0.90
|
0.15-0.30
|
≤0.030
|
≤0.030
|
Process:
EAF+LF+VD+ Forged+ Heat Treatment
Inspection: ultrasonic test, according to SEP1921 D/d or as your requirements.
Steel Forge:
|
Iterm
|
Heating Temperature
|
Start Temperature
(Forge)
|
Finish Temperature
|
Cooling Method
|
|
Steel Ingot
|
1140°C-1180°C
|
1100°C-11500°C
|
800-880°C
|
cooling in hole or sand
|
|
Steel Billet
|
1100°C-1150°C
|
1050°C-1100°C
|
800-880°C
|
cooling in hole or sand
|
Heat Treatment Standard:
Quenching,820 ~ 850 centigrade cold oil.