What is 1.2311 steel equivalent to?
Nov. 04, 2024
Understanding 1.2311 Steel Equivalents
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The steel known as 1.2311 aligns with AISI P20 tool steel standards according to UNI EN ISO blend specifications. This variation of steel is known for its hardened and tempered properties.
Composition and Characteristics
Manufacturing Process: The production involves EAF (Electric Arc Furnace), LF (Ladle Furnace), VD (Vacuum Degassing), and ESR (Electro-Slag Remelting).
Key Properties: Notably, this steel provides superior hardening penetration capabilities of up to 400mm, and is typically delivered in a hardened and tempered condition. Its exceptional properties make it ideal for polishing and photoengraving applications, in addition to nitriding (approximately 800 HV), and various plating options such as chrome and nickel.
Primary Uses: This steel is predominantly utilized in the manufacture of plastic molds, praised for its outstanding surface finishing capabilities. Its usage extends to dies for light alloys with lower melting points, including dies boxes, plates, etc.
Chemical Analysis
The chemical composition of 1.2311 steel includes:
- C: 0.35-0.45
- Si: 0.20-0.40
- Mn: 1.30-1.60
- Cr: 1.80-2.10
- Mo: 0.15-0.25
- Ni: -
- P: 0.030
- S: 0.030
Comparable Standards
- UNI: -
- W.Nr: 1.
- DIN: X40CrMnMo7
- AFNOR: 40 CMD8
- AISI/SAE: P20
- BS: P20
Essential Information
- Ac 1: 740°C
- Ms: 310°C
Supply Status: The material is supplied in a hardened and tempered condition with a hardness level of HB 280-325 (950-N/mm²).
Heat Treatment Guidelines:
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Annealing:
Heat to 720-750°C, then cool in the furnace for 2-4 hours.
Stress Relieving:
Heat to 560-600°C, hold for 2-4 hours.
Cooling can be done in furnace or air.
Hardening:
Preheat to 600-650°C.
Heat to a hardening temperature between 840-870°C and maintain.
Cool in oil.
Achieve hardness of 51 HRC post-hardening.
Tempering:
Conduct shortly post-hardening at temperatures between 580-650°C for 1 hour with a minimum of 2 hours for 25mm thickness.
Applications and Variations of 1. Steel
We at OTAI SPECIAL STEEL, with over 16 years of expertise, cater to various needs in the industry as DIN 1.2311 steel stockholders and suppliers from China.
This type of tool steel is specifically designed for plastic injection molding, categorized as high-quality medium carbon, pre-hardened (28-34 HRC), cold work plastic mold steel. There’s no further heat treatment required, which alleviates concerns regarding distortion or cracking. Thus, it is the most favored material for plastic molds in injection processes.
Relevant Specifications: DIN - AISI A681 YB/7 094
Chemical Composition of 1.2311 Steel Plate
- C: 0.35-0.45
- Si: 0.20-0.40
- Mn: 1.30-1.60
- P: 0.035
- S: 0.035
- Cr: 1.80-2.10
- Mo: 0.15-0.25
Equivalent Grades of 1. Steel
- AISI ASTM P20 (USA Standard)
- GB 3Cr2Mo (China Standard)
Delivery Forms for 1. Steel
As DIN 1.2311 tool steel, we offer various forms including round bars, flat bars, plates, hexagonal sections, and square blocks. Diameters can be customized to suit your required specifications as single pieces or in multiples. Flat sections can be sliced from bars or plates to desired dimensions. Additionally, precision ground tool steel bars and plates can be provided, ensuring a high-quality finish to exact tolerances.
Usage of 1. Steel
1.2311 tool steel is known as German Die Steel, produced via a super clean process, pre-hardened, achieving a micro-pure and homogeneous structure. The material exhibits excellent polishing and light etching properties post-heat treatment, allowing for effective machining and layout for decorative applications. It supports surface treatments such as chrome plating, boasts even material hardness (up to 400mm thick), acceptable toughness, and favorable machinability. Its microstructure typically comprises martensite and bainite.
Common applications include zinc, aluminum, magnesium die-casting molds, hot-pressing molds, various hot forging dies, and metal extrusion dies.
1. Tool Steel Supply Range
- Round steel bars: Diameter 20mm to applicable size.
- Steel plates: Thickness of 20mm to applicable size.
If specific sizes are not listed, please reach out to our knowledgeable sales team for assistance.
Forging Guidelines for Plastic Mould Steel DIN 1.2311
Heat slowly to 930°C, maintaining the temperature for thorough heat distribution, then commence forging. Ensure gradually cooled post-forging.
Annealing of DIN 1.2311 Tool Steel Material
Heat to a temperature range of 775 to 790°C, allowing sufficient time for soaking to ensure complete thermal penetration. Afterward, cool in a heat treatment furnace.
Quenching Process for 1.2311 Material
Quench in oil after heating to a range of 820-840°C.
Tempering of Steel Grade Material
Uniformly heat at the predetermined tempering temperature, ensuring adequate soaking time, then cool naturally in air. The advised temperature range is from 100 to 600°C. For further heat treatment specifications on 1.2311 tool steel, please consult your heat treatment specialist.
1.2311 tool steel round bars and flat sections can be customized to your precise measurements. 1.2311 tool steel ground bar is also available, ensuring a high-standard tool steel precision ground to your specifications. This steel can additionally be obtained as Ground Flat Stock / Gauge Plate in both standard and custom sizes.
For assistance with your inquiries regarding 1. Tool steel, reach out to our experienced sales team.
For urgent queries, contact us via email or phone at +86 769. We respond within 24 hours.
To discover more, please visit our page on 1. steel.
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