DIN 1.2379 Cold Work Tool Steel by Toolman Special Steels
When Your Tools Face Abrasive Wear - 1.2379 is the Answer
In industries where tooling faces constant friction, cutting, or impact- failure isn’t just costly, it’s catastrophic. That’s why manufacturers worldwide rely on DIN 1.2379 cold work tool steel (also known as AISI D2 or X153CrMoV12) to deliver exceptional wear resistance, dimensional stability, and longevity.
At Toolman Special Steels, we supply high-quality DIN 1.2379, tailored to the most demanding cold work applications - so your tools last longer, perform better, and reduce downtime
Understanding DIN 1.2379 Steel
DIN 1.2379 is a high-carbon, high-chromium tool steel renowned for its:
- High Wear Resistance: Thanks to a significant volume of hard carbides, it offers prolonged tool life in abrasive environments.
- Dimensional Stability: Its air-hardening property ensures minimal distortion during heat treatment.
- Toughness: The addition of vanadium enhances its toughness, making it suitable for tools subjected to impact.
These characteristics make DIN 1.2379 ideal for applications like blanking dies, forming tools, and shear blades.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| C | 1.4 | 1.6 |
| Si | 0.10 | 0.6 |
| Mn | 0.1 | 0.6 |
| P | – | 0.030 |
| S | – | 0.030 |
| Cr | 11 | 13 |
| Mo | 0.7 | 1.2 |
| V | 0.5 | 1.1 |
Key takeaway: High chromium and vanadium content create a material that resists both abrasion and deformation under pressure.
Mechanical Properties
| Property | Value |
|---|---|
| Hardness (HBW) | 255 max (Annealed) |
| Quenching and Tempering Hardness (HRC) | 59 min (Annealed) |
| Poisson’s Ratio | 0.27 - 0.30 |
| Impact Toughness | 77 J/cm2 |
| Tensile Strength | 1860-2060 MPa |
| Yield Strength | 1600-1800 MPa |
These stats translate to longer tool life, less frequent replacements, and higher production efficiency.
Heat Treatment & Processing Insights
- Annealing : 850°C with slow cooling.
- Hardening : 1020–1040°C, followed by air or oil quenching.
- Tempering : 150–550°C depending on hardness-toughness balance.
Applications
DIN 1.2379 is extensively used in:
- Punches and dies
- Shear blades
- Tooling for plastics
- Tyre Shredders
- Cold forming tools
- Rollers and knives for industrial cutting applications
- High-performance cutting tools, stamping, woodworking, drawing, deep drawing and pressing tools
- For ceramics and pharmaceutical industries, rolls, measuring tools, plastic moulds, shear blades
Partner with Toolman Special Steels
As leading DIN 1.2379 cold work steel suppliers, Toolman Special Steels offers:
- Customized Solutions: Tailored sizes and heat treatments to match your specific requirements.
- Quality Assurance: Strict adherence to international standards ensures consistent quality.
- Expert Support: Our team provides technical guidance to help you select the right material for your application.
Its versatility makes it a preferred choice for industries ranging from automotive to pharma.
Explore our range of cold work tool steels and discover how we can support your projects with materials that deliver performance and reliability.
Ready to Upgrade Your Tooling?
Looking for a reliable supplier of high-performance DIN 1.2379 cold work tool steel?
Contact us at indiatoolman@gmail.com
Request a quote or consultation today.
Bonus Resource
Want the complete technical datasheet?
Click here to request
the PDF version of our DIN 1.2379 specifications.
Ready to upgrade? Contact our team today for expert guidance and support.
Contact