Guangzhou Changfeng Steel Co., LTD
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High Carbon Alloy Steel Plate 1.2312 / P20+S Plastic Mould Steel
Equivalent grades:
| GB | DIN | AISI | JIS |
| 3Cr2Mo+S | 1.2312 | P20+S | PX5 |
Introduction:
High carbon alloy steel plate 1.2312 / P20+S plastic mould steel is a widely used plastic die steel in the world, as well as its comprehensive mechanical performance is good. It has high hardenability, and can makes large section steel earn a relatively uniform hardness, also it has good polishing performance.
Chemical Composition(%):
| C | Si | Mn | Cr | P | S | Mo |
| 0.35-0.45 | 0.35-0.50 | 1.40-1.60 | 1.80-2.00 | ≤0.035 | ≤0.015 | 0.30-0.55 |
Feature:
Plastic mould steel with excellent machinability properties because of the high S content, good toughness properties, good dimensional stability, requiring no heat treatment, 280-325HB hardened and tempered condition, suitable for nitriding to increase wear-resistance, not suitable for chrome plating to increase wear-resistance, not suitable for chrome plating and polishing.
Recommend heat treatment:
| Quenching | Tempering | ||||
| Heating temperature/℃ | Cooling way | Hardness (HRC) | Tempering temperature /ºC | Cooling way | Hardness (HRC) |
| 870-890 | Oil Cooling | 50-54 | 550-640 | Air Cooling | 28-36 |
Applications:
For the production of plastic molds and casting low melting metal material. This steel has good machinability and mirror grinding performance.
Delivery condition:
Hot rolled or forged, black surface.
Hardenss: pre-hardening or tempering to 28-33HRC.
| Hot sale products for hot/cold work mould Steel | |||||||||
| STANDARD/GRADE | Flat Bar Size(mm) | Round bar Size(mm) | Technics | ||||||
| DIN | AISM | JIS | GB(China) | Thickness | Width | Length | Diameter | Length | |
| 1.2311 | P20 | PDS-3 | 3Cr2Mo | 10-700 | 155-2200 | 2000-6000 | 20-200 | 2000-6000 | Forged, Hot Rolled |
| 1.2738 | P20+Ni | - | 3Cr2NiMnMo | 10-1100 | 155-2200 | 2000-6000 | 20-200 | 2000-6000 | |
| 1.2379 | D2 | SKD10 | SKD10 | 10-200 | 155-810 | 2000-6000 | 20-200 | 3000-6000 | |
| 1.2080 | D3 | SKD1 | 3Cr2Mo | 10-200 | 155-810 | 2000-6000 | 20-200 | 3000-6000 | |
| 1.2083 | 420 | - | 4Cr13 | 10-500 | 155-1200 | 2000-6000 | 20-300 | 3000-6000 | |
| 1.2344 | H13 | SKD61 | 4Cr5MoSiV1 | 10-500 | 155-1600 | 2000-6000 | 20-400 | 3000-6000 | |
| 1.2510 | O1 | SKS3 | 9CrWMn | 10-200 | 155-810 | 2000-6000 | 20-200 | 3000-6000 | |
| 1.7225 | SAE4140 | SCM440 | 42CrMo | 10-200 | 155-2200 | 2000-6000 | 20-200 | 3000-6000 | |
| 1.2010 | SAE1050 | S50C | 50# | 10-700 | 155-2200 | 3000-6000 | 10-300 | 3000-6000 | Hot Rolled |
| 1.1191 | SAE1045 | S45C | 45# | 10-700 | 155-2200 | 3000-6000 | 10-300 | 3000-6000 | |
