China SAE SPECIAL STEEL is ASTM P20 Steel stockholders and suppliers in china. we have more our 20 years experience in special tool steel supply.
AISI P20 is a quality plastic Mold steel, The mold Steel P20 belong to the high quality medium carbon, Pre-hardness(28~34HRc) plastic mould steel. It no need further heat treatment. so you don’t have any worry about distortion and cracking.
America P20 tool steel properties is very similar with China GB 3Cr2Mo, IOS 35CrMo2, German DIN 1.2311 steel. At most work environment, The P20 is equivalent with 1.2311, 35CrMo2, 3Cr2Mo mold steel.
P20 steel properties Related Specifications ASTM A681-1999 | JIS G4404(2000) | GB 1299
Chemical composition
| C(％) | 0.28～0.40 | Si(％) | 0.20～0.80 | Mn(％) | 0.60～1.00 |
| P(％) | ≤0.030 | S(％) | ≤0.030 | Cr(％) | 1.40～2.00 |
| Mo(％) | 0.30～0.55 |
Form of Supply
We can provide P20 tool steel, including round steel, flat steel, steel plates, hexagonal steel, and steel blocks. P20 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
ASTM P20 tool steel is an American plastic mold steel material that has undergone “ultra clean” production processes, pre hardening, and exhibits highly micro pure and excellent uniform structure, as well as excellent polishing and light etching engraving properties. After heat treatment, the processing and polishing performance is good, and it can be processed. It is suitable for surface treatment of chromium, with high material hardness, good toughness, and good mechanical processing performance. The microstructure of gold consists of martensite and bainite structures. Mainly used in plastic steel molds. Such as automotive injection molding and PVC plastic injection molding.
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
P20 tool steel round steel and flat steel can be cut into the size you need. We can also provide P20 tool steel grounding rods, providing high-quality tool steel precision grounding tool steel rods to meet your required tolerances. P20 tool steel also has standard and non-standard sizes of grounding flat steel/gauge plates.
Forging of Plastic mold steel AISI P20 steel material
Slowly Heat to 930-1050 °C, keep the temperature to heat thoroughly. Start forging. Finished cool slowly.
Annealing of Din P20 plastic mold tool steel material
Heat to 775 to 790 °C, soak enough time, ensure heat thoroughly. then cool in the heat treatment furnace.
Quenching of the Steel p20 material
820-840°C, quench in oil. get p20 material hardness 28~34HRc
Tempering of P20 plastic mold steel grade material
The P20 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 P20 questions
by Email or Telephone. About any P20 questions will be feedback in 24 hours(work time 8:00-18:00 Beijing time).