| Customization: | Available |
|---|---|
| Type: | Round Bar |
| Standard: | AISI, DIN, JIS, GB |
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P20 Steel, also known as DIN 1.2311, is one of the most widely used Cr-Mo series pre-hardened plastic mold steels. It is highly favored in the injection molding industry due to its excellent machinability, polishing capabilities, and photo-etching properties.
Since P20 Steel is pre-hardened, it requires no further heat treatment, making it ideal for direct processing. This steel provides uniform hardness and good dimensional stability, ensuring precision and long-lasting performance in mold making. It is commonly used for producing plastic injection molds, ensuring high-quality results in various molding applications.
| ZEICIN Grade | AISI | DIN | GB | JIS |
| P20 | P20 | 1.2311 | 3Cr2Mo | - |
| C | Si | Mn | P | S | Cr | Mo | V | Ni |
| 0.28-0.40 | 0.20-0.80 | 0.60-100 | 0.03 | 0.03 | 1.40-2.00 | 0.30-0.55 | - | - |
Temperature: 500-550°C
Holding Time: 2 hours
Cooling: Slow cooling in furnace to room temperature.
Temperature: 720-750°C
Holding Time: 1 hour per inch of thickness
Cooling: Cool in furnace at 10°C/hour to 600°C, then air cool to room temperature.
Hardness: Max. Brinell 235
Preheating Temperature: 500-600°C
Austenitizing Temperature: 880°C
Holding Time: 30 minutes at austenitizing temperature
Quenching Media:
Oil (Warm oil: 65-80°C)
Gas/Circulating Atmosphere (for small dimensions)
Martempering (300°C, max. 4 minutes, then air cool)
Tempering:
Tempering Temperature: Based on required hardness (see tempering chart)
Temper Twice: With intermediate cooling to room temperature
Minimum Holding Time: 2 hours at temperature
Minimum Tempering Temperature: 250°C (unless material is to be nitrided or nitrocarburized).
High Toughness and Durability at Competitive Price
P20 Steel (DIN 1.2311) offers remarkable toughness, wear resistance, and high thermal stability at an affordable price. This steel is ideal for plastic mold applications, including injection molds, offering excellent performance without the high costs associated with other steels.
Precision and Uniform Microstructure
Manufactured using advanced steelmaking and forging techniques, P20 steel features a consistent microstructure that enhances toughness and thermal stability. This makes it highly suitable for injection molding tools and other demanding molding applications.
Controlled Heat Treatment
P20 steel is supplied in a pre-hardened (Quenching & Tempering) condition, which eliminates the need for additional heat treatment during mold processing. This ensures consistent hardness and reduces the production cycle time, improving efficiency.
Strict Quality Control Throughout Production
We implement rigorous quality management across the entire production process, from raw material selection to final inspection. This ensures consistent mechanical properties, a uniform microstructure, and precise dimensional accuracy in every batch of P20 steel.
Compliance with International Standards
Our P20 Plastic Mold Tool Steel complies with major global standards such as ASTM, DIN, JIS, and GB, ensuring it meets the requirements of industries worldwide, including automotive, aerospace, and manufacturing.
Continuous Process Innovation
We continuously optimize our manufacturing processes to meet the evolving demands of the molding industry, ensuring high performance and reliability in all of our P20 steel products.
Customizable Supply Options
P20 steel is available in various forms, including round bars, flat bars, sheets, and blanks. It can be tailored with specific heat treatments and surface finishes to meet your unique injection molding application needs.
High Purity: After vacuum degassing and refining, P20 steel achieves high purity, making it ideal for plastic molds that require polishing or etching.
Pre-Hardened Condition: Supplied in a pre-hardened (Quenching & Tempering) condition, P20 steel can be used directly for mold processing, reducing the overall production time.
Stable and Uniform Structure: After forging and rolling, P20 steel maintains a stable, uniform structure with 100% ultrasonic inspection, ensuring no pores or pinhole defects.
Excellent Machinability and Polishing: P20 steel offers outstanding machinability and the ability to achieve a mirror-like finish, making it perfect for high-quality plastic molding applications.
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