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Leading Traders & Suppliers of d2 die steel and d3 die steel from New Delhi.
D2 Die Steel
D3 Die Steel

D2 Die Steel
Application : Automobile Industry, Construction, Pharmaceutical / Chemical Industry, Oil & Gas Industry, D2 tool steels are used for long run tooling applications, where wear resistance is important, such as blanking or forming dies and thread rolling dies.

Coldwork tool steels include the highcarbon,highchromium steels or group D steels. These steels are designated as group D steels and consist of D2, D3, D4, D5, and D7 steels. These steels contain 1.5 to 2.35% of carbon and 12% of chromium. Except type D3steel, all the other group D steels include 1% Mo and are air hardened. Type D3 steel is oil quenched;though small sections can be gas quenched after austenitization using vacuum. As a result, tools made with type D3 steel tends to be brittle during hardening. Type D2 steel is the most commonly used steel among the group D steels.

Equivalent Grades :
  • DIN 1.2379
  • NI KU
  • B.S. BD 2
  • ASTM A681
  • FED QQT570
  • SAE J437
  • SAE J438
  • UNS T30402
Chemical Composition :

C Mn Si S P Cr V
.35-.45 .60-1.00 .60 .03 .03 11.0-13.50 1

Fabrication and Heat Treatment Heat Treatment
D2 steels should be preheated very slowly to 815ºC (1500ºF) and then temperature can be increased to 1010ºC (1850ºF). They are then held at 1010ºC (1850ºF) for 20 to 45 minutes and air cooled (air quenched).

Forging : Forging of D2 steels can be done from 1065ºC (1950ºF) down to 954ºC (1750ºF). Do not forge below 926ºC (1700ºF). Annealing Annealing of D2 steels should be done at 871 to 898ºC (1600 to 1650ºF) followed by slow furnace cooling at 4.4ºC (40ºF) per hour or less.

Tempering : D2 steels can be tempered at 204ºC (400ºF) for achieving Rockwell C hardness of 61 and at 537ºC (1000ºF) for a Rockwell C hardness of 54. Request Callback

Additional Information : Item Code: D-2
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D3 Die Steel
Application : Automobile Industry, Construction, Pharmaceutical / Chemical Industry, Oil & Gas Industry

D3 is a high carbon, high chromium steel. Type D3 steel is oilquenched; though small sections can be gas quenched after austenitization using vacuum. As a result, tools made with type D3 steel tend to be brittle during hardening.

Equivalent Grades :
  • AFNOR Z 200 C 12
  • DIN 1.2080
  • UNI X 21O Cr 13 KU
  • JIS SKD1
  • B.S. BD 3
  • ASTM A681
  • FED QQT570
  • SAE J437
  • SAE J438
Chemical Composition :

C Mn Si S P Cr
2.0-2.30 .60 .60 .03 .03 11.0-13.50

Fabrication and Heat Treatment Heat Treatment :
D3 tool steel requires hardening and tempering to achieve maximum properties. For maximum accuracy, the parts of D3 tool steel should be stress relieved after roughing operations. Stress should be relieved at 648°C (1200°F) for one hour and cooled slowly.
Annealing : Annealing of D3 tool steel needs to be done in a controlled atmosphere furnace. D3 tool steels should be heated thoroughly to 871°C (1600°F) and cooled slowly at a rate of notmore than 6°C (20°F) per hour, until the furnace is black. Then the material should be removed and air cooled.

Tempering : The D3 tool steel should be cooled to room temperature and should be tempered immediately. The parts should be placed in the tempering furnace and increased slowly tothe desired tempering temperature. Tempering for 1 hour per inch of thickness is required.

Hardening : D3 tool steel should be heated properly since it is very sensitive to overheating and if not heated maximum hardness cannot be achieved. The work should be directly placed in afurnace preheated to 954°C (1750°F) and soaked for 2025minutes, plus 5 minutes per inch of thickness, and then oil quenched to harden it.

Additional Information : Item Code: D-3
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Why We Are India’s Trusted Die Steel Suppliers
We are recognized as one of India’s trusted Die Steel suppliers by delivering premium-quality materials, dependable service, and customized solutions for various industrial and tooling applications. Our commitment to quality, consistency, and customer satisfaction has helped us build a strong reputation across industries.

We supply high-grade Die Steel manufactured to meet strict industry standards. Our materials are known for their excellent hardness, toughness, wear resistance, and long service life.

We offer a comprehensive range of Die Steel grades suitable for different tooling and manufacturing requirements, including:

  • D2 Steel
  • D3 Steel

Our Die Steel products provide:

  • High wear resistance
  • Superior hardness
  • Excellent toughness
  • Thermal fatigue resistance
  • Dimensional stability during heat treatment

We provide cost-effective Die Steel solutions without compromising on quality and performance.

Our efficient supply chain and logistics network ensure fast and secure delivery to customers.

Our experienced team assists customers in selecting the right Die Steel grade based on tooling applications, operating conditions, and production requirements.



Frequently Asked Questions

Die Steel is a specialized tool steel designed for manufacturing dies, molds, cutting tools, and industrial tooling components. It offers high hardness, wear resistance, toughness, and durability under demanding working conditions.

Common Die Steel grades include:

  • D2 Steel
  • D3 Steel
    • Each grade is selected based on application requirements such as wear resistance, toughness, and heat resistance.

D2 steel is widely used for:

  • Cutting dies
  • Blanking tools
  • Shear blades
  • Punches
  • Industrial knives
It offers excellent wear resistance and high hardness.

D3 steel is commonly used in:

  • Cold work dies
  • Stamping dies
  • Thread rolling dies
  • Scrap cutters
It provides high wear resistance and good edge retention.

  • D2 Steel offers better toughness and machinability.
  • D3 Steel provides higher wear resistance due to higher carbon content.
The choice depends on the application and operational demands.

Die Steel is widely used in:

  • Automotive industry
  • Tool and die manufacturing
  • Aerospace sector
  • Plastic molding industry

Die Steel offers:

  • High hardness
  • Excellent wear resistance
  • Superior toughness
  • Good heat resistance
  • Long service life

The right Die Steel grade depends on:

  • Application type
  • Operating temperature
  • Wear resistance requirements
  • Toughness needs
  • Production volume



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