About D3 Tool & Alloy Steel Round Bars

IMI Alloys India LLP is the best company that produces and exports D3 Tools & Alloy Round Bars. We are manufacturing the best quality product using the best crude materials that offer high strengths abilities. We manufacture the forms, types, and custom made and defaults features specified round bars. Cold-work apparatus steels incorporating D2, D3, D4, D5, and D7 steels are high-carbon, high-chromium materials. From D3 steel, all bunch D steels have 1% Moment and are discuss solidified. Sort D3 steel is oil-quenched, even though little segments can be gas extinguished after treatment using a vacuum. The specifications of D3 Tools & Alloy Round Bars contain the shapes, sizes, designs, different properties, and more.

D3 Cold Work Steel has elevated quality, high solidify feature and wear resistance. D3 is appropriate for complex blanking and producing devices for long runs and rugged and rough materials. Exceedingly wear-resistant plastic moulds. D3 steel can be a high quality Cold work apparatus steel, and It acquires a place up to the first-class high carbon combination apparatus steel.

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Tool & Alloy steel D3 Round Bars

The oil extinguished and tempered hardness of these bars is 28-34 HRc. We provide the D3 Tools & Alloy Round Bars, which are to be used by the applications demanding lengths as one-offs or different cut pieces, presenting a superiority exactness packed up bar to stretched resilience’s. IMI Alloys India LLP offers a diverse range of D3 tool steel and alloy steel products, including round bars, flat bars, and square bars. As a reliable stockist and supplier, we provide high-quality options for all your steel needs. Explore our collection through the following pages: Round Bars, D3 Tool & Alloy Steel Flat Bars, and D3 Tools & Alloy Steel Square Bars.

D2 vs D3 Tool Steel Round Bars?

High-carbon, high-chromium tool steels with the designations D2 and D3 are both renowned for their remarkable wear resistance and hardness. There are, however, some significant differences between the two. D2 has more wear resistance than D3 since it contains more carbon than D3. D3 is more corrosion-resistant than D2 because it contains more chromium. D2 normally has a Rockwell hardness of 60–62 HRC, whereas D3 typically has a hardness of 58–60 HRC. Because D2 has more carbon than D3, it is more brittle. Because D2 has a lower chromium content than D3, D3 is more resistant to deformation and chipping. In general, D2 is seen to be better suited for cutting tools, whereas D3 is thought to be better suited for punches, dies, and other applications requiring a high level of wear resistance and excellent surface quality. D2 often costs more and is more expensive to machine than D3. Generally speaking, D2 steel works well for cutting tools, while D3 steel is better for punches, dies, and other uses that call for a high level of wear resistance and a good surface polish.

How to maintain large d3 tool steel bar stock?

Large D3 tool steel bar stock needs to be kept in a cold, dry location to avoid rust and corrosion. The bars need to be shielded from humidity and moisture. Additionally, they must be maintained away from chemicals and heat sources. The bars must be kept pristine and clutter-free as well. It is important to frequently check the bars for wear or damage. Any broken bars need to be taken out of the stock and replaced. It’s crucial to maintain precise stock inventory records so that any missing or damaged bars may be found and replaced right away. In addition, appropriate lubrication, consistent cleaning, regular oiling, and corrosion prevention are required.

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IMI Alloys India LLP, we are putting all our great efforts to bring out the best materials. D3 Tools & Alloy Round Bars are utilized in different manufacturing areas such as Highly stressed cutting, punching tools for thin sheets, Shear blades for cutting, Profile rolls, Stone processing tools, Knives for paper and plastics, Deep drawing, Pressure pads and many more. We deliver these D3 Tools & Alloy Round Bars following the safety measures. D3 is an oil hardening, high Carbon Chromium material type tool steel with very high wear resistance. It hardens with a very slight change in shapes, sizes. The alloy possesses very high compressive strength and is deep hardening. D3 is used in tooling applications requiring a high degree of accuracy in hardening, forming rolls, powder metal tooling and blanking and forming dies.

Tool & Alloy steel Round Bars Stockist

Specifications of D3 Tool & Alloy Steel Round Bars

  • Standard : ASTM A681, ASME SA681
  • Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
  • Form : Round
  • Diameter : 10 mm ~ 900 mm
  • Size : 0.08 mm to 25.00 mm
  • Diameter Range : 0.040 mm – 12 mm (0.0016” – 0.4724”)
  • Application : Lathe Tools, Milling Cutter, Cutter Blades, Boring Tools, Twist drills, Milling Knives, Reamers, Taps, Metalcutting saws, Screw Cutting Tools, File Cutter’s Chissels, Drills, Hobs, Drill Bits, Tread cutting tools etc

Equivalent Grades of D3 Tool & Alloy Steel Round Bars

Country USA German Japan
Standard ASTM A681 DIN EN ISO 4957 JIS G4404
Grades D3 1.2080/X210Cr12 SKD1

Chemical Composition of D3 Tool & Alloy Steel Round Bar

Element C Si Mn P S Cr Ni Cu W
Content (%) 2.00-2.35 0.60 0.60 0.03 0.30 11.00-13.50 0.30 1.00 0.02 1.00

Mechanical Properties of D3 Tool & Alloy Steel Round Bars

Mechanical Properties Metric Imperial
Hardness, Knoop (converted from Rockwell C hardness) 769 769
Hardness, Rockwell C 62 62
Hardness, Vickers 748 748
Izod impact unnotched 77.0 J 56.8 ft-lb
Poisson’s ratio 0.27-0.30 0.27-0.30
Elastic modulus 190-210 GPa 27557-30457 ksi

Thermal Properties of D3 Tool & Alloy Steel Round Bars

Properties Conditions
T (°C) Treatment
Thermal expansion 12 x 10-6/ºC 20-100

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Applications For D3 Tool & Alloy Steel Round Bars


Generally, D3 tool steels are used for long run tooling applications, Some main applications for D3 Tool & Alloy Steel Round Bars materials are:

  • Blanking Dies
  • Forming Dies
  • Coining Dies
  • Slitting Cutters
  • Heading Tools
  • Long Punches
  • Forming Rolls
  • Edging Rolls
  • Master Tools
  • Beading Rolls
  • Intricate Punches
  • Extrusion Dies
  • Drawing Dies
  • Lamination Dies
  • Thread Rolling Dies
  • Burnishing Tools

Export Destinations for D3 Tool & Alloy Steel Round Bars


Argentina, Greece, Canada, Malaysia, Gambia, Mexico, Angola, Estonia, Czech Republic, Yemen, Slovakia, China, Croatia, Vietnam, Kuwait, Tunisia, Switzerland, Serbia, Belarus, Thailand, Nigeria, Iraq, Poland, Hungary, Sri Lanka, Azerbaijan, Ghana, Japan, Puerto Rico, Hong Kong, Australia, Algeria, Finland, United States, Namibia, Romania, Poland, Kenya, Sweden, South Africa, India, Ukraine, Denmark, Peru, Russia, Philippines, Kazakhstan, Nigeria, Israel, South Korea, Iran, Netherlands, Turkey, France, Nepal, Pakistan, New Zealand, Venezuela, Libya, Taiwan, Bahrain, Saudi Arabia, Qatar, Chile, Chile, Trinidad & Tobago, Zimbabwe, Lithuania, Iran, Ecuador, Bangladesh, Portugal, Ireland, Lebanon, Singapore, Spain, Morocco, Jordan, Bolivia, Egypt, Macau, Indonesia, Oman, Bulgaria, Austria, Norway, United Kingdom, Brazil, Germany, Mongolia, Mexico, Italy, Tibet, United Arab Emirates, Colombia, Bhutan, Belgium, Afghanistan, Gabon, Costa Rica.


Lagos, Doha, Edmonton, Singapore, Thane, Noida, Gimhae-si, Calgary, Petaling Jaya, La Victoria, Jamshedpur, Hyderabad, Chennai, Atyrau, Coimbatore, Ranchi, Brisbane, Ludhiana, Howrah, Al Jubail, Dubai, Faridabad, New York, Visakhapatnam, New Delhi, Courbevoie, Manama, Bogota, Rio de Janeiro, Geoje-si, Al Khobar, Milan, Mumbai, Busan, Chiyoda, Aberdeen, Bhopal, Kuwait City, Navi Mumbai, Cairo, Nashik, Istanbul, Kanpur, Jakarta, Houston, Sharjah, Chandigarh, Caracas, Vung Tau, Muscat, Mexico City, Surat, Jeddah, Haryana, Gurgaon, Seoul, Montreal, Bangkok, Pune, London, Thiruvananthapuram, Dallas, Granada, Ulsan, Nagpur, Moscow, Dammam, Indore, Jaipur, Tehran, Ernakulam, Riyadh, Kolkata, Colombo, Toronto, Ahmedabad, Kuala Lumpur, Pimpri-Chinchwad, Ho Chi Minh City, Bengaluru, Madrid, Ankara, Karachi, Rajkot, Baroda, Vadodara, Hong Kong, Los Angeles, Santiago, Port-of-Spain, Ahvaz, Melbourne, Secunderabad, Sydney, Perth, Algiers, Abu Dhabi, Hanoi.

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IMI ALLOYS INDIA LLP is a notable manufacturer, supplier, stockist, and exporter of bars – round bars, square bars, flat bars, etc. in various materials like Tool Steel, Alloy Steel, and High-Speed Steel in Mumbai, India. We are authorized dealers of Graphite India Limited (POWMEX STEELS DIVISION) and also the only authenticated stockist of Nachi Fujikoshi Corp in India for their High-Speed Steel, Powder Metallurgy, Tool Steel, and Alloy Steel Products.
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