Aluminium Extrusion Steel Supplier in India
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Why H13 tool steel Is Widely Used for Aluminium Extrusion Dies

The aluminium extrusion industry demands tooling that can withstand extreme heat, pressure, wear, and continuous production cycles. Choosing the wrong die steel can lead to premature cracking, dimensional loss, downtime, and high replacement costs.
That is why H13 tool steel has become the industry’s preferred choice for aluminium extrusion dies.
Known for its excellent combination of hot strength, toughness, thermal fatigue resistance, and wear resistance, H13 steel delivers reliable performance in demanding extrusion applications.
What is H13 Tool Steel?
H13 tool steel is a chromium-molybdenum-vanadium hot work tool steel designed for high-temperature tooling applications.
Equivalent grades include:
- DIN 1.2344
- SKD61
- X40CrMoV5-1
H13 is widely used in:
- Aluminium extrusion dies
- Die casting dies
- Forging dies
- Plastic injection moulds
Why Aluminium Extrusion Dies Need Special Tool Steel
During extrusion, aluminium billets are heated to high temperatures and forced through the die under massive pressure.
This creates:
- High thermal stress
- Severe wear
- Continuous friction
- Cyclic heating and cooling
Ordinary steels cannot withstand these conditions for long. The die material must maintain:
- Hardness at high temperatures
- Toughness against cracking
- Wear resistance under pressure
This is where H13 tool steel performs exceptionally well.
ESR H13 vs Standard H13 for Extrusion Dies
What is ESR H13?
ESR stands for:
Electro Slag Remelting
This secondary refining process produces cleaner steel with:
✔ Lower inclusions
✔ Better toughness
✔ Improved fatigue resistance
✔ More uniform carbide distribution
For demanding extrusion applications, many manufacturers prefer:
👉 ESR-grade H13 tool steel
How to Increase H13 Extrusion Die Life
Manufacturers can significantly improve die life by:
✔ Using ESR-grade H13
Cleaner steel improves fatigue resistance.
✔ Maintaining Correct Hardness
Recommended:48–52 HRC
✔ Proper Preheating
Reduces thermal shock during startup.
✔ Nitriding Surface Treatment
Improves:
- Wear resistance
- Oxidation resistance
- Surface hardness
✔ Correct Cooling Practices
Avoid aggressive cooling that causes thermal stress.
Why Manufacturers Prefer Virat Steels for H13 Tool Steel
Virat Steels is a trusted supplier of:
- H13 / DIN 1.2344
- ESR H13
- SKD61 tool steel
We supply:
✔ Rounds
✔ Flats
✔ Blocks
✔ Ultrasonic tested material
✔ Mill test certificates
Industries served:
- Aluminium extrusion
- Die casting
- Forging
- Plastic moulding
Why Choose Virat Steels?
✔ Ready Stock Available
Fast dispatch across India.
✔ ESR & Standard Grades
Application-based recommendations.
✔ Technical Support
We help customers choose:
- Correct grade
- Correct HRC
- Correct size
✔ Trusted by Manufacturers Across India
We are supplying to major industrial regions across Pan India .
Contact Virat Steels for H13 Tool Steel
Looking for a reliable supplier of H13 tool steel for aluminium extrusion dies?
Contact Virat Steels today:
📞 +91 98140-21775
https://www.viratsteels.com/h13.html
✉ info@viratsteels.com
Get expert guidance on:
✔ Grade selection
✔ ESR vs standard
✔ Hardness recommendations
✔ Size availability
Frequently Asked Questions (FAQs)
1. Why is H13 tool steel widely used for aluminium extrusion dies?
H13 steel is widely used because of its excellent hot strength, thermal fatigue resistance, toughness, and wear resistance. These properties help extrusion dies perform reliably under high temperature and pressure.
2. What hardness is recommended for H13 extrusion dies?
The recommended hardness for aluminium extrusion dies is typically: 48–52 HRC
3. What is the equivalent grade of H13 steel?
Equivalent grades of H13 tool steel include:
- DIN 1.2344
- SKD61
- X40CrMoV5-1
4. What are the common failures in aluminium extrusion dies?
Common extrusion die failures include:
- Heat checking
- Thermal fatigue cracking
- Surface wear
- Gross cracking
- Dimensional loss
These failures are often caused by improper heat treatment, poor cooling, or low-quality steel.
5. What is ESR H13 steel?
ESR stands for Electro Slag Remelting.
ESR-grade H13 tool steel offers:
✔ Cleaner microstructure
✔ Better toughness
✔ Improved fatigue resistance
✔ Longer die life
6. How can extrusion die life be increased?
Extrusion die life can be improved by:
- Using ESR-quality H13 steel
- Maintaining proper hardness
- Applying nitriding
- Using correct cooling practices
- Proper die preheating
7. Is H13 steel suitable for high-pressure applications?
Yes. H13 tool steel performs very well in high-pressure applications because of its excellent toughness and heat resistance.
8. What industries use H13 steel in India?
H13 steel is widely used in:
- Aluminium extrusion industry
- Die casting industry
- Forging industry
- Plastic mould manufacturing
- Automotive tooling applications
9. Where can I buy genuine H13 steel in India?
You can buy genuine H13 tool steel from trusted suppliers like Virat Steels, offering ESR and standard grades with test certificates and ultrasonic-tested material.
Exploring the top Die Steels for Aluminium Extrusion Industry!
The Aluminium Extrusion industry in India has been witnessing a significant transformation in recent years, with a growing demand for steel grades that can enhance the efficiency and quality of extrusion processes. The selection of the right steel grade is crucial, as it directly impacts the life of the extrusion dies, the quality of the extruded products, and the overall productivity of the extrusion presses.




Among the various steel grades, H13 (DIN 1.2344) has emerged as a preferred choice for many manufacturers due to its exceptional toughness and resistance to thermal fatigue. This makes it an ideal candidate for hot work applications, particularly in the manufacturing of aluminium extrusion dies where it can withstand the rigorous demands of continuous operation.
Another popular grade, H11 (DIN 1.2343), offers similar properties to H13 but with enhanced toughness, making it suitable for applications where slightly better impact resistance is required. On the other hand, D2 (DIN 1.2379) is known for its high-carbon, high-chromium composition, providing excellent wear resistance, which is beneficial in cold work applications and sometimes in extrusion dies with specific requirements.
The P20+Ni (DIN 1.2738) grade is also gaining traction due to its pre-hardened state, which offers good toughness and machinability, reducing the time and cost associated with the die-making process. Lastly, DIN 1.2714 is recognized for its versatility, offering a balance of toughness and wear resistance, suitable for a variety of hot work applications, including extrusion dies.
Companies like Virat Special Steels Pvt. Limited have been at the forefront of supplying high-quality Aluminium Extrusion Die Steel H13, catering to the evolving needs of the industry. Their commitment to delivering durable and high-performance steel grades has made them a go-to choice for businesses looking to optimize their extrusion processes.
As the industry continues to grow, the demand for these specialized steel grades is expected to rise, driven by the need for more durable, efficient, and cost-effective manufacturing solutions. The focus on quality and innovation by suppliers will play a pivotal role in shaping the future of aluminium extrusion in India.
For those interested in learning more about the offerings of Virat Special Steels Pvt. Limited or in exploring the possibilities of enhancing their extrusion processes with these advanced steel grades, a visit to their website provides a wealth of information and the opportunity to connect with their team of experts.
Choose VIRAT SPECIAL STEELS PVT. LIMITED , INDIA for your Aluminium Extrusion Die Steel needs, and experience quality and reliability!
Contact us today to learn more!
https://www.viratsteel.in/materials/aluminium-extrusion-die-steel-supplier-in-india/
Any further queries feel free to contact us :
🌐https://www.viratsteels.com 📬 info@viratsteels.com ☎+91 098140-21775
Why Quality Die Steel is Critical for Aluminium Extrusion?
Aluminium extrusion die steel is a specialized type of steel designed to withstand the intense pressures and high temperatures required in the aluminium extrusion process. During this process, aluminium is forced through a die to create specific shapes or profiles, such as beams, frames, and other components.

The die steel used in this process needs to be extremely durable, resistant to wear, and capable of maintaining its shape under extreme conditions. High-quality die steel ensures the accuracy of the extrusion process, reduces downtime caused by die failure, and increases the lifespan of the tooling.
The Quality Die Steel is Critical for Aluminium Extrusion because of these factors:
Choosing the right die steel is crucial for several reasons. First, durable and high-performance die steel improves the quality of the final product. Poor-quality steel can lead to defects in the extruded aluminium, such as cracks or surface blemishes. High-grade die steel ensures precision and consistency in every extrusion, giving you the flawless results you need.
Second, it reduces production costs in the long run. Inferior die steel wears out quickly, leading to frequent tool replacements, increased downtime, and higher maintenance costs. On the other hand, robust die steel minimizes downtime and keeps production flowing smoothly.
An Overview of VIRAT SPECIAL STEELS PVT. LIMITED
VIRAT SPECIAL STEELS PVT. LIMITED, based in India, is a leading supplier of high-quality steel products with a global customer base. Since its inception, the company has remained committed to providing superior steel solutions to industries worldwide. With decades of experience, VIRAT is a trusted name in the steel industry and a preferred choice for companies looking for reliable die steel solutions.
Specialization in Aluminium Extrusion Die Steel
VIRAT SPECIAL STEELS specializes in the production of aluminium extrusion die steel, offering customized solutions for different manufacturing needs. The company’s state-of-the-art manufacturing facilities use advanced technology and precision engineering to produce die steel that meets the highest standards of quality and performance.
Whether you need die steel for high-volume extrusion processes or specialized shapes, VIRAT STEEL has the expertise and resources to meet your needs. The company’s team of experts works closely with clients to ensure they receive products tailored to their specific applications.
Explore now: https://www.viratsteel.in/materials/aluminium-extrusion-die-steel-supplier-in-india
For businesses involved in aluminium extrusion, the quality of your die steel can make or break your operation. By choosing VIRAT SPECIAL STEELS PVT. LIMITED, you are not just getting a product; you are getting a partner that is committed to your success. With a focus on quality, reliability, and customer satisfaction, VIRAT SPECIAL STEELS PVT. LIMITED is the ideal choice for all your aluminium extrusion die steel needs.
Whether you’re looking for enhanced durability, precision manufacturing, or a tailored solution to meet your specific requirements, VIRAT STEELS delivers on every front. Their commitment to innovation, sustainability, and exceptional service ensures that you can trust them as a long-term partner in your manufacturing journey.




