P20+S Plastic Mold steel | SKT3 | 40CMD8+S | 1.2312 Steel China supplier and factory.
China SAE SPECIAL STEEL is ASTM P20+s / 1.2312 stockholders and suppliers in china. we have more our 20 years experience in special tool steel supply.
DIN 1.2312 is a high-quality plastic mold steel material. Steel 1.2312 is produced by adding approximately 0.08% sulfur to material P20 steel /1.2311 steel. and the S element enhances the free cutting ability of 1.2311. DIN 2312 materials are typically delivered under pre hardness conditions, with a hardness of 28-34HRC.
ASTM P20+S steel is equivalent to DIN 1.2312 material. Generally speaking, 40CrMnMoS8-6/1.2312 and P20+S mold steel have the same performance in the final application.
P20 steel properties Related Specifications ASTM A681-1999 | JIS G4404(2000) | GB 1299
Chemical composition of tool steel 1.2312
| DIN ISO 4957 | C | Mn | P | S | Si | Cr | Mo | |||||
| 1.2312 | 0.35 | 0.45 | 1.30 | 1.60 | 0.03 | 0.05-0.1 | 0.20 | 0.40 | 1.80 | 2.10 | 0.15 | 0.25 |
| ASTM A681 | C | Mn | P | S | Si | Cr | T | |||||
| P20+S | 0.28 | 0.40 | 0.60 | 1.00 | 0.03 | 0.03 | 0.20 | 0.80 | 1.40 | 2.00 | 0.30 | 0.55 |
Form of Supply
We can provide 1.2312 tool steel, including round steel, flat steel, steel plates, hexagonal steel, and steel blocks. 1.2312 round steel can be sawed into the required length as a one-time or multiple cutting piece. Rectangular pieces can be sawed from flat steel or sheet metal to your specific size. We can provide grinding tools for steel bars and high-quality precision finished steel bars with very small tolerances.
Applications
DIN 1.2312 is applicable to the application of injection molds for thermoplastic materials, extrusion molds for thermoplastic materials, and compression molds. Plastic processing tools and die-casting molds.
Contact us for more information or the best cost or price based on your requirements.
Regular size and Tolerance
Steel round bar: Diameter Ø 5mm – 3000mm
Steel plate: Thickness 5mm – 3000mm x Width 100mm – 3500mm
Steel Flat bar: 5mm – 105mm
| 1) Forged round bar | |||
| Diameter (mm) |
Diameter Tolerance (mm) |
Diameter (mm) |
Diameter Tolerance (mm) |
| ≤12 | -0.13 ～0.30 | >50～60 | -0.25～0.76 |
| 14～25 | -0.13～0.41 | >65～80 | -0.25～1.02 |
| >30～40 | -0.15～0.51 | >85～100 | -0.30～+1.27 |
| >45～50 | -0.20～0.64 | >110～300 | -0.38～3.81 |
| 2)Forged steel plate | |||
| Thickness (mm) |
Thickness Tolerance (mm) |
Thickness (mm) |
Thickness Tolerance (mm) |
| ≤25.4 | -0.41～0.79 | >127～152 | -1.60～2.39 |
| >25.4～76 | -0.79～1.19 | >178～254 | -1.98～3.18 |
| >76～127 | -1.19～1.60 | >254～500 | -2.39～3.96 |
Others specified size, pls contact our experienced sales team.
Processing
1.2312 tool steel round steel and flat steel can be cut into the size you need. We can also provide 2312 tool steel grounding rods, providing high-quality tool steel precision grounding tool steel rods to meet your required tolerances. 1.2312 tool steel also has standard and non-standard sizes of grounding flat steel/gauge plates.
Forging of Plastic mold steel Din 1.2312 material
Hot forging temperature: 1100-850 °C.
Annealing of Din 1.2312 plastic mold tool steel material
- Annealing temperature / C: 780 ~ 760
Quenching of the Steel 1.2312 material
Tempering of 1.2312 plastic mold steel grade material
The 1.2312 is uniformly heated at tempering temperature. Maintain sufficient time and then cool in the air
Advice the temperature 100 to 600 °C. more P20 mold tool steel heat treatment data, pls contact your heat treatment supplier,.
Contact our experienced sales team to help you with your 1.2312 questions
by Email or Telephone. About any 2312 questions will be feedback in 24 hours(work time 8:00-18:00 Beijing time).