P20 1.2311 HRC28-32 Alloy Plastic Mould Steel
1. Features
1. Good machining performance
2. Excellent polishability
3. Uniform hardness
4. Higher heat hardness
5. High wear resistance
6. High hardenability
2. Similar Standards
Chinese |
American |
Germany |
Japanese |
Swedish |
GB |
AISI/ASTM |
DIN |
JIS |
ASSAB |
3Cr2Mo |
P20 |
1.2311 |
PDS-3 |
618 |
3. Chemical Composition
Grades |
C |
Si |
Mn |
P |
S |
Mo |
Ni |
Cr |
1.2311 |
0.37-0.42 |
≤0.40 |
1.40-1.60 |
/ |
≤0.005 |
0.15-0.25 |
0.4 |
1.80-2.10 |
P20/3Cr2Mo |
0.28-0.40 |
0.20-0.80 |
0.60-1.00 |
≤0.03 |
≤0.03 |
0.30-0.55 |
0.05-0.1 |
1.40-2.00 |
4. Heat Treatment
Quenching |
Tempering |
Heating Temperature/ºC |
Cooling |
Hardness/HRC |
Heating Temperature/ºC |
Cooling |
Hardness/HRC |
850-800 |
Oil |
50-52 |
580-640 |
Air |
28-36 |
5. Applications
1.Thermoplastic plastic injection mold, extrusion mold.
2. Used in die casting molds of zinc, magnesium, aluminum and their alloys
3. Thermoplastic blow molding dies.
4 Heavy load main parts of the mold.
5.Cold structural parts.
6.Commonly used in the manufacture of TV cases, washing machines, refrigerator inner casings, buckets, etc.
7. Automobile bumper mould
8. Suitable for plastic molds and formwork for TV front case, telephone, water dispenser, vacuum cleaner, etc
6. Stock Size
Plate |
Thickness |
1.2311: 10-250mm P20: 220-460mm |
Width |
1.2311: 2200mm P20: 1600mm |
Length |
1.2311: 4000-10000mm P20: 4000-8000mm |
Round Bar |
Diameter |
12-120mm |
Length |
4000-6000mm |
Die Block |
Thickness |
250-800mm |
Width |
800-1600mm |
Length |
2000-6000mm |
7. Product picture