IMI Alloys India LLP is a leading company that offers a wide range of OHNS Flat Bars and other qualitative products for different applications. The wide range of OHNS Flat Bars are manufactured in our organizations, including custom forms. The specifications and properties of these flat bars are differentiated between the physical and mechanical properties. OHNS Flat Bars provide excellent characteristics like great elongation, high density, and thermal and electrical conductivity; these are important characteristics. In addition, they have attributes such as superior quality, low maintenance, and long durability. OHNS Flat Bars strength, coupled with good durability and economical ranges, makes the material a good substitute for the more expensive alloys and materials of industrial applications. The OHNS Flat Bars could easily substitute a high carbon chromium grade as tool steel with its good characteristics.

What is OHNS material full form?

The OHNS, Oil Hardening Non-Shrinkable, is a type of high-carbon, high-chromium cold work steel. It is commonly used in the manufacturing industry for applications requiring high wear resistance, toughness, and good machinability.

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OHNS Flat Bars

OHNS Flat Bars, manufactured using non-shrinking materials and components, have the best furnishings as we use the best grades. Our bars have the best objectives, like supreme quality, less maintenance, and long flexibility. Our OHNS Flat Bars are used in several applications, such as food processing equipment, tools and knives, oil and gas industries, etc. Other types of OHNS Flat Bars, such as round bars, plates, and shims, are also available. We maintained the high quality and working aspect of OHNS Flat Bars. Its full form, known as OHNS steel, as Oil hardened Non-Shrinkage steel. This alloy is a tool steel grade. The OHNS Flat Bars are identified as the alloy whose volume experiences very little change in an annealed condition. The material alloy is treated by annealing after being treated by hardening and tempering.

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The features offered by OHNS Flat Bars are high hardness compatibility, incredible durability, free form rust, supreme grade finish, and surface finish. They are most likely used for trim, forming, mastering, bushings, and blanking dies. The heat treatments of OHNS Flat Bars are differentiated between soft annealing, cooling, hardness, stress relief annealing, hardening, and quenching. With the help of these unique and attractive features, these OHNS Flat Bars have huge demand in industrial areas.

Tool & Alloy Steel Flat Bars

Specifications of OHNS Flat Bars

  • Dimensions : ASTM / ASME
  • Form : Flat
  • Size : 3.17mm to 350mm dia
  • Thickness : 2 -100mm
  • width : 10 to 500mm
  • Length : 4 to 6meters, or as customer’s requirements
  • Technique : OHNS Hot Rolled, Cold Drawn, Cold Rolled, Forged Flat Bar, Rod
  • Condition : Hardened & tempered, annealed
  • Application : Blanking Dies, Bushings, Forming Dies, Master Tools, Forming Rolls, Gauges, Trim Dies etc

Equivalent Grades of OHNS Flat Bars


Chemical Composition of OHNS Flat Bar

Element C Si Mn P S Cr W
Content(%) 0.85-1.00 0.15-0.35 1.00-1.20 0.03 Max 0.03 Max 0.50-0.70 0.50-0.70

Mechanical Properties of OHNS Flat Bars

Maximum Stress(N/mm²) Yield Stress(N/mm²) Elongation Impact Strength (joule) Hardness value (BHN)
950 465 10% 25 288

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Applications For OHNS Flat Bars


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

  • Blanking Dies
  • Bushings
  • Forming Dies
  • Master Tools
  • Forming Rolls
  • Gauges
  • Trim Dies

Export Destinations for OHNS Flat Bars


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


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

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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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