What is 4140 Round bar ?

The 4140 Hot Rolled Heat Treated Round Bars are known to have a range of properties as well as characteristics. They get these properties as well as attributes from the elements present in their chemical composition. Because of this, these 4140 Hot Rolled Heat Treated Round Bars are used in a large number of industrial applications.

These 4140 Hot Rolled Heat Treated Round Bars have the property of strength. Also, they have good toughness. These 4140 Hot Rolled Heat Treated Round Bars also have the characteristics of hardness. The 4140 Hot Rolled Heat Treated Round Bars are manufactured from high-quality raw materials so that the 4140 Hot Rolled Heat Treated Round Bars that are manufactured are of premium quality.


AISI 4140 is a chromium alloy steel, Alloy Steel 4140 Round bar, Alloy Steel Grade 4140, AS AISI-SAE 4140 Square Bar, alloy steel AISI 4140 materials, Grade 4140 Alloy Steel Square Bar, Buy 4140 Alloy Steel Round Bar Manufacturer ion Mumbai, India.

These 4140 Hot Rolled Heat Treated Round Bars could be available in various sizes depending on the need or the requirements of the applications or according to the specifications provided by the client. These 4140 Hot Rolled Heat Treated Round Bars are manufactured by taking the required rules as well as regulations into consideration so that the products that are manufactured are of excellent quality. Also, the necessary norms, guidelines, as well as standards are taken into consideration so that the 4140 Hot Rolled Heat Treated Round Bars that are manufactured perform well and satisfy the needs and requirements of the client and the application.

AISI 4140 Round Bar Specifications

Specifications : Alloy Steel 4140 Bar
Thickness : 3.0 to 12.0mm thickness
Size : 4 to 100mm
Round Bar Size : Diameter: 3-~800mm
Channel Bar : 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness
Hollow Bar : 32mm OD x 16mm ID to 250mm OD x 200mm ID)
Form : Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle etc.
Surface : Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline
Finish : Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
4140 Bar 1.7225 G41400
C Si Ni P Mn Cr S Mo
4140 0.38 – 0.43 0.20 – 0.35 0.035 0.035 0.75 – 1.00 0.80 – 1.10 0.15 – 0.25
Grade UTS
Reduction of Area Charpy
room temperature
Elongation % Hardness
4140 min 80k min 100k 50J min 40% min 20% 18-22

Other Products

Alloy 4140 Square Bar WERKSTOFF NR. Flat Bars
WERKSTOFF NR. Bright Bar ASTM 4140 Alloy Flat Bars
4140 Alloy Square Bars ASTM 4140 Alloy Rectangular Bar
UNS G41400 Alloy Bright Bar UNS G41400 Alloy Forged Rod
UNS G41400 Alloy Hexagonal Bar UNS G41400 Alloy Polished Bars
4140 Alloy Square Bar 4140 Alloy Precision Ground Stock
UNS G41400 Alloy Rectangular Bars 4140 Alloy Rod

4140 Round Bar Price List

  • Grade 4140 Structural Round Bar
    US / Metric Ton (FOB Price) on request
  • Grade 4140 Hex Bar
    US / Metric Ton (FOB Price) on request
  • Grade 4140 Hex Bar
    US / Metric Ton (FOB Price) on request
  • Grade 4140 Flat Bar
    US / Metric Ton (FOB Price) on request
  • Grade 4140 Steel Round Bar
    US / Metric Ton (FOB Price) on request
  • Grade 4140 Square Bar
    US / Metric Ton (FOB Price) on request
  • Grade 4140 Premium Bar
    US / Metric Ton (FOB Price) on request


We Sumit Impex Metal Ensure the best quality of Packing , because its play important role especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put extraordinary concern regarding packaging.

We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,

  • Boxes and Crates
  • Shrink-wrapped
  • Carton boxes
  • Wooden pallets
  • Wooden boxes
  • Wooden crates

Testings (Destructive, Non Destructive)

  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Intergranular Corrosion (IGC) Test
  • Pitting Resistance Test
  • Dye Penetrant Test (DP Test)
  • Micro Test
  • Macro Test
  • Hardness Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Radiography Test
  • Ultra Sonic Test (UT)
  • Eddy Current Testing
  • Impact Test
  • Bend Test

Application Industries

These material are not a single material but the name for a family of corrosion resistant steels. Like many scientific breakthrough the origins of stainless steel lies in a lucky accident. From the smallest part of zipper to the largest building skyscraper, stainless steel is an essential part of modern life.Stainless steel’s strength, resistance to corrosion and low maintenance make it the ideal material for a wide range of applications. It is also has a long life cycle and is 100% recyclable.

  • Construction
  • Bridges
  • Petrochemical Industry
  • Ship Building
  • Engineering
  • General Structural Purposes
  • Offshore and Onshore Services

Grade 4140 Round Bar Manufacturers

Country we serve / City we deliver

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

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