About Us

D3 Tool & Alloy Steel Round Bars are high-carbon, high-chromium steel products known for their exceptional hardness and wear resistance. These round bars are used in various industrial applications due to their ability to maintain high strength and durability under demanding conditions.

D3 tool steel is part of the cold-work tool steels category, which includes D2, D4, D5, and D7 steels. It is particularly valued for its excellent performance in complex blanking and forming tools, long production runs, and tough material handling. The steel is oil-quenched to achieve a hardness level between 28 to 34 HRC, providing a balance of toughness and wear resistance.

D3 Tool & Alloy Steel Round Bars Supplier

Amardeep Steel Supplier of D3 Tool & Alloy Steel Round Bars meet the highest standards of quality and performance, making them a reliable choice for all your steel needs. These round bars are commonly used in making highly wear-resistant plastic molds, complex cutting tools, and other applications that require precision and reliability. 

AISI d3 tool steel round bars are available in various sizes and can be customized to meet specific requirements, making them a versatile and essential material in the manufacturing and engineering industries.

 D3 Tool & Alloy Steel Round Bars Specification 

Specification Details
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”)

 D3 Tool Steel Chemical Composition 

Element C Si Mn P S Cr Ni V Cu W
Content (%) 2.00-2.35 0.6 0.6 0.03 0.3 11.00-13.50 0.3 1 0.02 1

D3 Alloy Steel Round Bar Mechanical Properties 

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

D3 Steel Round Bar Equivalent Grade

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

Thermal Properties of D3 Tool & Alloy Steel Round Bars

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

 D3 Tool & Alloy Steel Round Bars Application 

  • Blanking and forming dies
  • Forming rolls
  • Press tools
  • Punches
  • Bushes

We Supply Globally

We Supply Our D3 Tool & Alloy Steel Round Bars to various countries like Mexico, Ireland, Oman, India, Russia, Algeria, Turkey, Bahrain, China, Trinidad & Tobago, Austria, Qatar, Ecuador, United Arab Emirates, Poland, Jordan, Libya, Philippines, Hungary, Nigeria, Bulgaria, Indonesia, Chile, Macau, Colombia, Croatia, Germany, Ghana, Argentina, South Africa, Greece, Switzerland, Hong Kong, Kuwait, France, Italy, Costa Rica, Kenya, Namibia, Azerbaijan, Japan, Venezuela, Morocco, Brazil, New Zealand, United Kingdom, Canada, Mexico, Bolivia, Romania, Iraq, Tibet, Angola, Chile, Estonia, Puerto Rico, South Korea, Nigeria, Finland, Tunisia, Slovakia, Vietnam, Egypt, Lithuania, Czech Republic, Bhutan, Peru, Zimbabwe, Ukraine, Australia, Gabon, Taiwan, Sri Lanka, Thailand, Lebanon, Kazakhstan, Belarus, Gambia, Norway, Netherlands, Bangladesh, Sweden, Pakistan, Serbia, Iran, Iran, Nepal, Spain, Poland, Yemen, United States, Singapore, Malaysia, Israel, Mongolia, Belgium, Afghanistan, Denmark, Portugal, Saudi Arabia.

We Supply Worldwide

We Supply Our D3 Tool & Alloy Steel Round Barsto various cities like Toronto, Al Khobar, Chandigarh, Haryana, Perth, Algiers, Ahvaz, Ulsan, Moscow, Istanbul, Howrah, Singapore, Ho Chi Minh City, Port-of-Spain, London, Rajkot, New York, New Delhi, Nagpur, Kuwait City, Karachi, Surat, Ernakulam, Gimhae-si, Granada, Kanpur, Kolkata, Lahore, Madrid, Visakhapatnam, Secunderabad, Bangkok, Mumbai, Coimbatore, Bogota, Milan, Tehran, Ranchi, Pimpri-Chinchwad, Montreal, Colombo, Bhopal, Seoul, Edmonton, Aberdeen, Caracas, Busan, Brisbane, Sydney, Calgary, Sharjah, Rio de Janeiro, Chennai, Chiyoda, Geoje-si, Jakarta, Thiruvananthapuram, Courbevoie, Riyadh, Indore, Jeddah, Hyderabad, Kuala Lumpur, Baroda, Ankara, Mexico City, Dubai, Gurgaon, Vung Tau, Lagos, Al Jubail, Melbourne, Los Angeles, Petaling Jaya, Bengaluru, Atyrau, Jamshedpur, Santiago, Hanoi, Thane, Pune, Doha, Faridabad, Vadodara, La Victoria, Muscat, Ludhiana, Jaipur, Navi Mumbai, Houston, Ahmedabad, Dammam, Manama, Nashik, Cairo, Abu Dhabi, Hong Kong, Dallas, Noida.