About H11 Tool & Alloy Steel Flat Bars

IMI Alloys India LLP is an approved industry to provide top quality Flat Bars. We are offering H11 Tool & Alloy Steel Flat bars of high quality. We use good quality primary material for manufacturing these flat bars. Our company is also a provider, dealer, and trader of these flat bars. Our clients are purchase these flat bars in various sizes, specifications, and standards from us. We have a team of skilled engineers that design these flat bars with accuracy. After designing and manufacturing, our company expert examines our flat bars, and we export them by packing them with great qualitative material. The material used for manufacturing has high qualitative alloy features. H11 Tool & Alloy Steel is a chromium and hot work tool steel designed as a steel group H. It is designed following the AISI classification system. This steel cooled using water without damage. This Flat Bar contains low carbon content. These H11 tools & Alloy Steel Flat Bars are often used for highly stressed structural parts such as aircraft landing gear. Steel metal has great features and working abilities that are used in different industrial sectors.

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H11 Tool & Alloy Steel Flat Bars

Typical applications where these bars are used are hot punches, die casting dies, forging dies, hot shear blades, hot gripper dies, and extrusion tooling. We produce H11 Tool & Alloy Steel Flat Bar that shows mechanical properties, including tensile strength and yield strength. These flat bars show physical properties like density and melting point. Our flat bar has thermal conductivity and thermal expansion. H11 Tool & Alloy Steel has good machinability and weldability. Our flat bars are used in many industries, such as construction, automotive, chemical industries, and mechanical engineering.

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IMI Alloys India LLP provides Flat bars with a sturdy design, corrosion resistance, and longer life. This alloy shows minor changes during heat treatment. Our flat bars show resistance to thermal fatigue cracking. It also has superb resistance to gross cracking and thermal shock when the water-cooled in service. The quality, material compositions, characteristics of H11 Tool & Alloy Steel Flat Bars are maintained by our side, so they work flexibly with applications to provide the great outcome.

Tool & Alloy Steel Flat Bars

Specifications of H11 Tool & Alloy Steel Flat Bars

  • Standard : ASTM A681, ASME SA681
  • Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
  • Form : Flat
  • Size : 3.17mm to 350mm dia
  • Thickness : 2mm~100mm
  • Length : 4 to 6meters, or as customer’s requirements
  • 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 H11 Tool & Alloy Steel Flat Bars

Country USA German Japan British
Standard ASTM A681 DIN EN ISO 4957 JIS G4404 BS 4659
Grades H11/T20811 1.2343/X37CrMoV5-1 SKD6 BH11

Chemical Composition of H11 Tool & Alloy Steel Flat Bar

ASTM A681 C Mn P S Si Cr V W Mo
H11/T20811 0.35 0.45 0.20 0.60 0.03 0.03 0.80 1.25 4.75 5.50 0.30 0.60 1.10 1.60
DIN ISO 4957 C Mn P S Si Cr V W Mo
1.2343/X37CrMoV5-1 0.28 0.35 0.10 0.40 0.80 1.20 2.70 3.20 0.40 0.70 1.10 1.50
JIS G4404 C Mn P S Si Cr V W Mo
SKD6 0.32 0.42 0.50 0.03 0.03 0.80 1.20 4.50 5.50 0.30 0.50 1.00 1.50
BS 4659 C Mn P S Si Cr V W Mo
BH11 0.32 0.40 0.40 0.35 0.35 0.85 1.15 4.75 5.25 0.30 0.50 1.25 1.75

Mechanical Properties of H11 Tool & Alloy Steel Flat Bars

Properties Metric Imperial
Hardness, Rockwell C (air cooled from 982°C, 45 mins) 52.5 52.5
Hardness, Rockwell C (air cooled from 1010°C, 45 mins) 56 56
Hardness, Rockwell C (air cooled from 1038°C, 45 mins) 57 57
Modulus of elasticity 207 GPa 30000 ksi
Modulus of elasticity (@538°C/1000°F) 159 GPa 23000 ksi
Modulus of elasticity (@204°C/400°F) 190 GPa 27500 ksi
Charpy impact (V-notch; air cooled from 1010°C;535°C temper temperature) 13.6 J 10.0 ft-lb
Charpy impact (V-notch; air cooled from 1010°C;650°C temper temperature) 27.1 J 20.0 ft-lb
Charpy impact (V-notch; air cooled from 1010°C;370°C temper temperature) 33.9 J 25.0 ft-lb
Machinability (1% carbon steel) 75.0 – 80.0% 75.0 – 80.0%
Poisson’s ratio 0.27-0.30 0.27-0.30

Thermal Properties of H11 Tool & Alloy Steel Flat Bars

Properties Metric Imperial
Thermal expansion (@20-100ºC/68-212ºF) 11.9 x 10-6/ºC 6.63 µin/in°F
Thermal conductivity (@100ºC/212ºF) 42.2 W/mK 292.9 in/hr.ft².°F

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Applications For H11 Tool & Alloy Steel Flat Bars


Generally, H11 tool steels are used for long run tooling applications, Some main applications for H11 Tool & Alloy Steel Flat Bars materials are:

  • Hot punches
  • die casting dies
  • forging dies
  • hot shear blades
  • hot gripper dies
  • extrusion tooling

Export Destinations for H11 Tool & Alloy Steel Flat Bars


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


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

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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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