DIN 1.2311/P20 Tool Steel Plate for Plastic Injection Molds

• Customization: Available
• Type: Flat
• Standard: AISI, ASTM, DIN, JIS, GB
• Model NO.: P20/1.2311/3Cr2Mo
• Technique: Forged/Hot Rolled/Cold Drawn
• Shape: Flat Bars/Plates/Blocks/Round Bars
• Surface Treatment: Polished, Turned, Peeled, Ground, Black
• Special Use: Mold Steel
• Application: Plastic Mold Steel
• Heat Treatment: Annealed, Quenched, Tempered
• Delivery Time: According to The Inventory Situation
• Product Application: Aluminium Extrusion Die/Pressing Mold etc
• Certificate: ISO
• Price: to Be Confirmed Based on Order Details
• Transport Package: Standard Packaging
• Specification: According to order
• Trademark: ZEICIN
• Origin: China
• Production Capacity: 10000 Ton / Year

Product Description

 

Product Description

 

DIN 1.2311/P20 Tool Steel Plate for Plastic Injection Molds

P20 steel, a widely used Cr-Mo series pre-hardened plastic mold steel, is renowned for its excellent machinability, polishing, and photo-etching capabilities. Having undergone quenching and tempering, P20 steel is ready for immediate processing without the need for additional heat treatment. The material offers uniform hardness and excellent dimensional stability after machining, making it an ideal choice for high-precision plastic injection molds and mold bases.

 

Similar Grade

ZEICIN Grade	AISI	DIN	GB	JIS
P20	920	1.2311	3Cr2Mo	-

Main Chemical Composition%

C	Si	Mn	P	S	Cr	Mo	V	Ni
0.28-0.40	0.20-0.80	0.60-1.00	0.03	0.03	1.40-2.00	0.30-0.55	-	-

 

P20 Steel Heat Treatment Summary

• Stress Relieving: After rough machining, heat to 500-550°C, hold for 2 hours, then furnace cool slowly.

• Annealing: Heat to 720-750°C, hold time depends on thickness, cool slowly in furnace to 600°C, then air cool. Hardness ≤ 235 HB for easier machining.

• Quenching: Preheat at 500-600°C, austenitize at 880°C for 30 minutes, then quench in oil or gas. Prevent decarburization.

• Tempering: Typically temper above 250°C, temper twice, holding at least 2 hours each time, cool to room temperature between tempers.

Our Advantages

 

1. Excellent Cost Performance

Good Machinability and Durability at Competitive Price
DIN 1.2311 / P20 steel is a widely used Cr-Mo pre-hardened mold steel known for its excellent machinability, good toughness, and wear resistance at an affordable cost. It is ideal for plastic injection molds and mold bases, providing reliable performance in demanding molding environments without the need for costly heat treatments.

 

2. Advanced Manufacturing Process

Uniform Microstructure and Stable Properties
Manufactured with advanced steelmaking and forging techniques, P20 steel features a uniform and refined microstructure, ensuring toughness, dimensional stability, and consistent hardness. This makes it highly suitable for precise mold components used in automotive, consumer electronics, and household appliance industries.

Pre-Hardened Condition for Efficiency
P20 steel is supplied in a pre-hardened (quenched & tempered) state with hardness typically between 280-320 HB, enabling immediate machining and reducing production cycle time.

 

3. Reliable Quality Assurance

Strict Quality Control from Raw Materials to Finished Product
We enforce comprehensive quality inspections at every production stage-from raw material selection through forging, heat treatment, and final machining. This guarantees consistent mechanical properties and precise dimensional accuracy in every batch of P20 steel.

Compliance with International Standards
Our DIN 1.2311 / P20 steel meets international standards such as DIN, ASTM, and GB, making it suitable for global mold manufacturing applications.

 

4. Customization and Technical Support

Ongoing Process Optimization
We continuously improve our manufacturing and heat treatment processes to meet evolving market demands, ensuring high performance and reliability of every batch.

Flexible Supply Options
P20 steel is available in various forms, including plates, bars, and blocks. Customized heat treatments, machining, and surface finishes can be provided to meet specific mold design requirements.

 

Main Characteristics of P20 Steel

• High Purity and Stability
  After vacuum degassing and refining, P20 steel exhibits high purity and a stable, uniform microstructure. This makes it especially suitable for plastic molds requiring fine polishing or photo-etching.

• Pre-Hardened Ready-to-Use Condition
  Supplied in a pre-hardened (quenched and tempered) state, P20 steel can be processed directly without additional heat treatment. This significantly shortens mold manufacturing lead times and improves production efficiency.

• Superior Structural Integrity
  Forging and rolling processes ensure a uniform grain structure free of pores or pinhole defects, verified through 100% ultrasonic inspection to guarantee product reliability.

• Excellent Machinability and Polishability
  P20 steel offers good machinability combined with mirror-quality polishability, enabling high-precision mold components with excellent surface finish.

 

Surface condition

Applications

Applications of DIN 1.2311 / P20 Tool Steel Plate for Plastic Injection Molds

DIN 1.2311 / P20 tool steel is widely used for mold manufacturing, especially in plastic injection molding and related processes. Its good machinability, toughness, and pre-hardened condition make it ideal for:

• Large plastic injection molds and compression molds

• Extrusion dies for thermoplastic materials

• Blow molding tools

• High-strength mold bases, plates, and bolsters

• Forming tools and press-brake dies (can be flame hardened or nitrided for enhanced wear resistance)

• Prototype dies for aluminum die casting

• Zinc die casting molds

• Long-run dies and tooling components requiring durability and dimensional stability

This versatile steel provides reliable performance across a range of molding and die casting applications, ensuring precision and longevity.

 

 

Packaging & Shipping

FAQ

 

Q1: What are the advantages of DIN 1.2311 / P20 Tool Steel over conventional mold steels?
A: DIN 1.2311 / P20 tool steel offers excellent machinability, good toughness, and wear resistance in a pre-hardened state. Compared to conventional mold steels, it allows faster machining and polishing while maintaining stable hardness and dimensional accuracy. This makes it ideal for plastic injection molds, reducing production time and cost without sacrificing mold performance.

Q2: What sizes and forms do you supply for DIN 1.2311 / P20 Tool Steel?
A: We supply DIN 1.2311 / P20 tool steel in various forms, including plates, blocks, round bars, and flat bars. Custom sizes and dimensions can be provided to fit your specific mold tooling requirements, ensuring seamless integration into your manufacturing process.

Q3: Do you offer customized solutions for DIN 1.2311 / P20 Tool Steel?
A: Yes, we provide customized services including specific size cutting, heat treatments, surface finishing, and pre-machining according to your mold design needs. This ensures enhanced mold performance, reduced lead times, and cost-effectiveness tailored to your production demands.

Q4: How do you ensure product quality consistency for DIN 1.2311 / P20 Tool Steel?
A: We enforce strict quality control at every production stage-from raw material selection and refining to forging, heat treatment, and final inspection. This guarantees consistent mechanical properties, uniform microstructure, and precise dimensional accuracy for every batch, ensuring reliable mold performance and longevity.