718 1.2738 P20+Ni Hot Rolled Pre-hardened Mould Steel
1, Features
1)uniform hardness qualitative of Material;
2)No quenching crack danger,Without heat treatment costs that can reduce the tool cost;
3)Excellent polishing performance;
4)Good machining performance;
2, Application
Used for various large -sized mirror plastic mould,percision mould;
1)Leather grain, pear skin grain etching, imitation stone moulds;
2)Clear plastic container classes such as pencil case, commodity high gloss mould;
3)Such as refrigerator, air conditioner production to demand higher large mould;
3, Grade
GB |
DIN |
AISI |
ASSAB |
3Cr2NiMnMo |
1.2738 |
P20+Ni |
718 |
4, Chemical composition(%)
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
0.30-0.40 |
0.20-0.50 |
1.00-1.50 |
≤0.010 |
≤0.030 |
1.5-2.00 |
0.25-0.40 |
≥1.0 |
5, Hardness:33-37HRC
6, Mould steel Size:
Size of Steel grade 1.2738 mechanical properties |
Round bar |
Diameter(mm) |
Length (mm) |
|
Max:800 |
Max: 9000 |
|
Plate |
Thickness(mm) |
Width (mm) |
Length (mm) |
Max:800 |
Max:1000 |
Max:6000 |
The specification can be customized. |
7, Packing: Export Standard Packing or Customers'demand
8, Delivery
Abundant stock, 7-15 days.
Customized products, 15-30 days.
9, The process flow
1)Hot rolled or forged condition, Pre-harden &tempering , black surface
2)Hardness: 30~36HRC
3) Hot rolled technology:EAF+LF+VD
Forged technology: EAF+LF+VD+ESR+Forging +Q T + Machined surface