| Type: | Sheet |
|---|---|
| Standard: | AISI, ASTM, DIN, JIS, GB, BS |
| Composition: | Check Detailed Description |
| Technique: | Forged |
| Shape: | Plate |
| Surface Treatment: | Black, Machined |
| Customization: |
|---|
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Ningshing Special-Steel is one of the largest specialized stockiest and service center for tool steel and alloy steel in China. We have more than 20 years of experiences in supplying AISI P20 / DIN 1.2311 Plastic Mold Steel.
AISI P20 / DIN 1.2311 Plastic Mold Steel is a kind of plastic mold steel widely used in the world, with good comprehensive mechanical properties, good hardenability. It is easy to get the homogeneous hardness throughout the section for big dimension blocks. Good polish ability, good toughness on the surface. Delivered in Pre-hardening condition, used directly for making molds, that can guaranteegood usability and avoid the deformation in heat treatment.
Dimensions
Round: dia.10-500 mm
Hot Rolled Plate: 10-460 x 1600-2300 mm
Forged Block: 150-500 x 200-1900 mm
Delivery Condition
EAF+LF+VD, Forged, Q+T, Black surface or Machined surface, UT SEP1921 Class3 D/d
Hardness: 28-34HRC (or as per requirement)
Equivalence
| AISI / SAE | DIN / W.Nr | JIS | GB |
| P20 | 1.2311 | ---- | 3Cr2Mo |
Chemical Composition(%)
| Steel Grade | C | Si | Mn | P | S | Cr | Mo |
| P20 | 0.28- 0.40 | 0.20- 0.80 | 0.60- 1.00 | ≤ 0.030 | ≤ 0.030 | 1.40- 2.00 | 0.30- 0.55 |
| 1.2311 | 0.35-0.45 | 0.20-0.40 | 1.30-1.60 | ≤ 0.030 | ≤ 0.030 | 1.80-2.10 | 0.15-0.25 |
| 3Cr2Mo | 0.28-0.40 | 0.20-0.80 | 0.60-1.00 | ≤ 0.030 | ≤ 0.030 | 1.40-2.00 | 0.30-0.55 |
Applications
1. Making medium or large sized high precision plastic molds with long life.
2. Making low melting point alloyed die casting molds, like tin, zinc, lead.
Forging Technique
| Heat Temperature | Start Forging Temperature | Finish Forging Temperature | Cooling Method |
| 1120-1160 °C | 1070-1110 °C | >=850 °C | Sand Cooling or Slow Cooling |
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