Steels for plastic moulding

Plastics are indispensable in today's world, serving a wide range of purposes. They are used in mass-produced items such as packaging and reusable bottles, as well as in high-quality products and accessories across consumer goods, leisure, automotive, and the construction industry. Additionally, plastics play a crucial role in high-tech sectors like aerospace.

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Tool Steels
Material Classifictation
40CrMnMo7
Family
Plastic Moulding
Material Number
1.2311
Brand
Formadur 2316 /Superclean
Characteristics
Standard steel for Moulds
This is a Bar (Product) forged (Forming) quenched and tempered (Melting). You can get it in round (Shape) and processed (Finish).
Learn more Datasheet
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Portfolio
Tool Steels
Material Classifictation
40CrMnMo7
Family
Plastic Moulding
Material Number
1.2311
Brand
Formadur 2316 /Superclean
Characteristics
Standard steel for Moulds
This is a Bar (Product) forged (Forming) quenched and tempered (Melting). You can get it in round (Shape) and processed (Finish).
Learn more Datasheet
Contact us
Portfolio
Tool Steels
Material Classifictation
40CrMnMo7
Family
Plastic Moulding
Material Number
1.2311
Brand
Formadur 2316 /Superclean
Characteristics
Standard steel for Moulds
This is a Bar (Product) forged (Forming) quenched and tempered (Melting). You can get it in round (Shape) and processed (Finish).
Learn more Datasheet
Contact us
Portfolio
Tool Steels
Material Classifictation
40CrMnMo7
Family
Plastic Moulding
Material Number
1.2311
Brand
Formadur 2316 /Superclean
Characteristics
Standard steel for Moulds
This is a Bar (Product) forged (Forming) quenched and tempered (Melting). You can get it in round (Shape) and processed (Finish).
Learn more Datasheet
Contact us
Portfolio
Tool Steels
Material Classifictation
40CrMnMo7
Family
Plastic Moulding
Material Number
1.2311
Brand
Formadur 2316 /Superclean
Characteristics
Standard steel for Moulds
This is a Bar (Product) forged (Forming) quenched and tempered (Melting). You can get it in round (Shape) and processed (Finish).
Learn more Datasheet
Contact us
Portfolio
Tool Steels
Material Classifictation
40CrMnMo7
Family
Plastic Moulding
Material Number
1.2311
Brand
Formadur 2316 /Superclean
Characteristics
Standard steel for Moulds
This is a Bar (Product) forged (Forming) quenched and tempered (Melting). You can get it in round (Shape) and processed (Finish).
Learn more Datasheet
Contact us
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Experts for plastic mould steel

The plastic molding steel from the Swiss Steel Group possesses two essential characteristics. On the one hand, it ensures the highest quality of steel, and on the other hand, the steel properties can be individually and optimally tailored to the diverse requirements of the tool or the plastic product. Utilizing state-of-the-art technology, our plastic molding steel meets the highest standards in terms of:

  • Purity
  • Polishability
  • Uniformity in hardness and microstructure
  • Wear resistance
  • Temperature resistance
  • Machinability
  • Toughness and hardness

  • Thermal conductivity

Furthermore, our active and certified quality assurance system (ISO 14001, DIN EN ISO 9001, QS 9000, VDA 6.1 TS 16949, KTA 1401) enables the production of individually customized steel with consistently high quality.

Thermal conductivity

Plastic molding steel is characterized by good thermal conductivity, meaning it can efficiently transfer and dissipate heat. This is crucial for controlling the temperature in the injection molding process and ensuring uniform cooling of the plastic. Effective heat dissipation contributes to reducing cycle times and increasing productivity.

 

Wear resistance

Plastic molding steel is characterized by high wear resistance, meaning it experiences minimal wear even with repeated contact with plastics. This property ensures a long lifespan for molds and tools, leading to lower maintenance costs and higher productivity.

Hardness and strength

Plastic molding steel is characterized by high hardness and strength, making it resistant to deformations and cracking. This is particularly crucial as molds and tools are subjected to high pressures and mechanical stresses during the injection molding process. The high hardness and strength of plastic molding steel enable it to withstand these pressures and ensure precise shaping of the plastic.

Here you can find our products

from the injection moulding and plastics extrusion sectors

Green steel key visual nachhaltiger stahl

CO2 footprint well below the industry average

Our Green Steel is based on the circular economy, on energy sources with low CO2 content and is produced using the electric steel process.

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Process safety from consultation to the final product

The tools used in plastic processing exhibit significant differences in both their requirements and functionalities. The selection and treatment of steel play a crucial role in the quality and cost-effectiveness of plastic production.

Therefore, we have an experienced team of specialists for plastic mold tool steel. In close collaboration with the toolmaker, they define the optimal steel quality for the specific requirements of the final plastic product. We leverage the expertise of our steel specialists, modern production facilities, and decades of experience in all areas of heat treatment.

The advantages for the toolmaker include:

  • High purity
  • Excellent polishability
  • Best etchability
  • Uniform microstructure
  • Optimal machinability
  • Reproducible heat treatment
  • Shortest delivery times
  • Expert advice
  • Development of new steel

Product portfolio for every application

We share our enthusiasm for convincing and successful products with our customers and partners.

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Agriculture & Construction

Moderne Landwirtschaftsmaschinen mit robustem Baustahl bei der Ernte und dem Transport von Weizen in einem weitläufigen Feld unter blauem Himmel.

Aerospace

Rostfreier stahl flugzeug startbahn landung

Toolmaking

Praezisionsgefertigte werkzeugstahlform werkzeugbau

Medical technology

Rostfreie chirurgische instrumente im operationssaal

Newscenter

Sustainability  |  09/01/2026

Swiss Steel Group once again secures top “A” score in CDP rating

Swiss Steel Group has been awarded the highest rating, “A,” in CDP’s annual sustainability assessment for climate change for the second consecutive year. This distinction, conferred by the internationally recognized non-profit organization CDP, underscores the Group’s continued commitment to climate action and sustainable business practices. This achievement reinforces Swiss Steel Group’s position as a leader in corporate transparency and action on climate change, standing out from nearly 22,100 companies assessed.

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Products  |  15/12/2025

Swiss Steel Group publishes new white paper on efficiency in machining

What makes steel truly machinable? Cutting speed, tool life, and process stability determine the cost-effectiveness of machining. Our new white paper "Machinability" shows how machinability-optimized special steels can measurably improve productivity, quality, and sustainability.

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Products  |  22/10/2025

Swiss Steel Group launches "Machinability – Keep the World Turning" campaign

Materials expertise for precision, process stability and energy efficiency in machining

With its "Machinability – Keep the World Turning" campaign, Swiss Steel Group is launching an international initiative to promote competence and innovation in machining. The campaign celebrates the partnership between Swiss Steel Group and the machinists who turn steel into progress – highlighting how material expertise, precision and collaboration keep the world moving. The campaign will kick off on 21 and 22 October 2025 at the Ugitech site in Ugine (France) with presentations and discussions on current developments in the machining of stainless steels and engineering steels.

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