Steel Round Bar
Round bar steel is widely used across different industries due to its versatility. It plays an important role in construction projects for reinforcing bars and anchors, as well as in making guardrails and railings. In the automotive and aircraft industries, it’s often used for axle shafts, gears, and differential parts.
Round bars are also essential in the production of heavy machinery, such as backhoes and excavators, thanks to their strength. They are ideal for handling high pressure, making them a preferred material for crane booms, industrial trolleys, and other heavy-duty tools.
What are Standard Round Bar Sizes?
Round bars are available in various sizes, typically ranging from 1/4 inch to 2 inches in diameter. The size chosen depends on the application, with larger bars suitable for more demanding tasks. Common lengths for round bars are 36 inches, 48 inches, and 60 inches, though custom lengths can be ordered to meet specific needs.
Kaizen Steel Industries is a leading manufacturer & supplier of round bars in India. We offer round bars in sizes ranging from 15 mm to 400 mm, available in various forms such as Hot Rolled, Annealed, and Pickled. Our range includes Stainless Steel, Monel, Inconel, and Nitronic round bars. The round bar industry in India is highly competitive, and we focus on delivering quality and customer satisfaction.
As one of the largest suppliers of round bars in India, we provide top-quality AISI 316L round bars in a variety of sizes and grades from our state-of-the-art manufacturing facility. Our forged round bars are designed to meet customer needs and industry standards. With our in-house production capabilities, we continue to reach new milestones in delivering high-quality round bars.
Round Bar Specification
| Size Range | 15 mm to 400 mm |
| Length | 2 meters to 8 meters (8 feet to 26 feet) |
| Standards | ASTM, ASME, DIN, NF, JIS, EN, IOS |
| Crack Test | Magnetic Particle Inspection (MPI) |
| Tolerance (15 mm to 95 mm) | +/- 1.00% of size |
| Tolerance (95 mm to 400 mm) | +/- 1.50% to 2.00% of size |
Types of Round Bar
Round Bar
Hex Bar
Square Bar
Hollow Bar
Forged Bar
Flat Bar
Threaded Bar
Rectangle Bar
Flat Bar
Round Bar Chemical Composition
| C | Mn | Si | S | P | Cr | Ni | Mo | |
| EN-8 | .35 – .45 | .60 – 1.00 | .10 – .35 | .050 MAX | .050 MAX | – | – | – |
| EN-8D | .40 – .45 | .70 – .90 | .05 – .35 | .060 MAX | .060 MAX | – | – | – |
| EN-9 | .50 – .60 | .50 – .80 | .05 – .35 | .040 MAX | .040 MAX | – | – | – |
| EN-15 | .30 – .40 | 1.30 – 1.70 | .10 – .35 | .040 MAX | .040 MAX | – | – | – |
| EN-16 | .30 – .40 | 1.30 – 1.80 | .10 – .35 | .040 | .040 | – | – | .20 – .30 |
| EN-18 | .35 – .45 | .60 – .95 | .10 – .35 | .040 | .040 | .85 – 1.15 | – | – |
| EN-19 | .35 – .45 | .50 – .80 | .10 – .35 | .040 | .040 | .90 – 1.40 | – | .20 – .40 |
| EN-24 | .35 – .45 | .45 – .70 | .10 – .35 | .040 | .040 | .90 – 1.40 | 1.30 – 1.80 | .20 – .40 |
| EN-25 | .27 – .35 | .50 – .70 | .10 – .35 | .040 | .040 | .50 – .80 | 2.30 – 2.80 | .40 – .70 |
| EN-31 | .90 – 1.20 | .30 – .75 | .10 – .35 | .040 | .040 | 1.00 – 1.60 | – | – |
| EN-36B | .12 – .18 | .30 – .60 | .10 – .35 | .040 | .040 | .60 – 1.10 | 3.00 – 3.75 | |
| EN-36C | .12 – .18 | .30 – .60 | .10 – .35 | .040 | .040 | .60 – 1.10 | 3.00 – 3.75 | .10 – .25 |
| EN – 41B* | .35 – .45 | .60 MAX | .10 – .45 | .040 | .040 | 1.50 – 1.80 | .40 MAX | .10 – .25 |
| EN – 42 | .70 – .85 | .55 – .75 | .10 – .40 | .040 | .040 | – | – | – |
| EN – 45A | .55 – .65 | .70 – 1.00 | 1.70 – 2.0 | .040 | .040 | – | – | – |
| EN – 47 | .45 – .55 | .50 – .80 | .50 MAX | .040 | .040 | .80 – 1.20 | – | – |
| EN – 48A | .50 – .60 | .60 – .90 | 1.35 – 1.65 | .040 | .040 | .55 – .85 | – | – |
| EN – 353 | .20 MAX | .50 – 1.00 | .35 MAX | .040 | .040 | .75 – 1.25 | 1.00 – 1.50 | .08 – .15 |
| EN – 354 | .20 MAX | .50 – 1.00 | .35 MAX | .040 | .040 | .75 – 1.25 | 1.50 – 2.0 | .10 – .20 |
| 16Mncr5 | .14 – .19 | 1.00 -1.30 | .15 – .40 | .035 MAX | .035 MAX | .80- 1.10 | – | – |
| 20Mncr5 | .17 – .22 | 1.10 – 1.40 | .10 – .35 | .035 | .035 | 1.00 – 1.30 | – | – |
| SAE – 4140 | .38 – .43 | .75 – 1.00 | .20 – .35 | .035 | .035 | .80 – 1.10 | .15 – .25 | – |
| SAE – 4150 | .48 – .53 | .75 – 1.00 | .20 – .35 | .040 | .040 | .80- 1.10 | – | .15 – .25 |
| SAE -4320 | .17 – .22 | .45 – .65 | .15 – .35 | .035 MAX | .040 MAX | .40 – .60 | 1.65 -2.00 | .20 – .30 |
| SAE -4340 | .38- .43 | .60 – .80 | .15 – .35 | .035 MAX | .040 MAX | .70 – .90 | 1.65 -2.00 | .20 – .30 |
| SAE – 8620 | .18 – .23 | .70 – .90 | .20 – .35 | .040 | .040 | .40 – .60 | .40 – .70 | .15 – .25 |
| SAE – 52100 | .95 1.10 | .25 – .40 | .20 – .35 | .025 | .025 | 1.30 – 1.60 | – | – |
| F-22 | .15 MAX | .30 – .60 | .40 MAX | .040 | .040 | 2.00 – 2.5 | – | .87 – 1.30 |
| 17crnimo6 | .14 – .19 | .40 – .60 | .15 – .40 | .035 MAX | .035 MAX | 1.50- 1.80 | 1.40 – 1.70 | .25 – .35 |
| A-105 | .35 MAX | .60 – 1.05 | .35 MAX | .050 MAX | .040 MAX | – | – | – |
| LF-2 | .30 MAX | .60 – 1.35 | .15 – .30 | .040 MAX | .035 MAX | – | – | – |
| CHEMICAL COMPOSITION ( IN PERCENTAGE ) | ||||||||||
| Grade | C (Max) | Mn (Max) | P (Max) | S (Max) | Si (Max) | Cr | Ni | Mo | Nitrogen (Max) | Cu/ Others |
| 301 | 0.15 | 2.00 | 0.045 | 0.030 | 1.00 | 16.00 – 18.00 | 6.00 – 8.00 | – | 0.10 | – |
| 304 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00 – 20.00 | 8.00- 10.50 | – | 0.10 | – |
| 304L | 0.030 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00 – 20.00 | 8.00- 12.00 | – | 0.10 | – |
| 310S | 0.08 | 2.00 | 0.045 | 0.030 | 1.50 | 24.00- 26.00 | 19.00 – 22.00 | – | – | – |
| 316 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 16.00 – 18.00 | 10.00 – 14.00 | 2.00 – 3.00 | 0.10 | – |
| 316L | 0.030 | 2.00 | 0.045 | 0.030 | 0.75 | 16.00 – 18.00 | 10.00 – 14.00 | 2.00 – 3.00 | 0.10 | – |
| 317 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00 – 20.00 | 11.00 – 14.00 | 3.00 – 4.00 | 0.10 | – |
| 317L | 0.030 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00 – 20.00 | 11.00 – 15.00 | 3.00 – 4.00 | 0.10 | – |
| 321 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 17.00 – 19.00 | 9.00 – 12.00 | – | 0.10 | Ti5 ( C + N ) Min or 0.70 max |
| 347 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 17.00 – 19.00 | 9.00 – 13.00 | – | – | Cb= 10x ( C Min ) or 1.00 Max |
| 409 | 0.08 | 1.00 | 0.040 | 0.010 | 1.00 | 10.50 – 11.75 | 0.50 | – | – | Ti= 6x (C+ N ) Min or 0.70 Max |
| 409M | 0.03 | 0.81.2 | 0.030 | 0.030 | 0.40.75 | 11.00- 12.00 | 1.5 max. | – | – | Ti= 6x (C) Min or 0.70 Max |
| 410S | 0.08 | 1.00 | 0.040 | 0.030 | 1.00 | 11.50- 13.50 | 0.60 | – | – | – |
| 410 | 0.15 | 1.00 | 0.040 | 0.030 | 1.00 | 11.50- 13.50 | 0.75 | – | – | – |
| 420 | 0.35 | 0.50 | 0.035 | 0.015 | 0.50 | 12.00 – 13.00 | 0.20.3 | – | – | – |
| 430 | 0.12 | 1.00 | 0.040 | 0.030 | 1.00 | 16.00 – 18.00 | 0.75 | – | – | – |
| JSL AUS | 0.08 | 7.08.0 | 0.070 | 0.030 | 0.75 | 15.50 – 16.50 | 4.25 – 4.75 | – | – | 0.9 – 1.10 |
| JS- 203 | 0.08 | 9.2510.25 | 0.070 | 0.030 | 0.75 | 14.25 – 15.25 | 2.25 – 2.75 | – | – | 1.60- 2.0 |
| 301M | 0.10 | 4.55.5 | 0.060 | 0.030 | 0.75 | 14.50 – 15.50 | 6.0 – 7.0 | – | – | 1.70- 1.90 |
Round Bar Mechanical Properties
| Density | Yield Strength | Melting Point | Tensile Strength | Elongation |
|---|---|---|---|---|
| 8.0 g/cm3 | Psi – 30000 , MPa – 205 | 1400 °C or (2550 °F) | MPa – 515, Psi – 75000 | 35 % |
| 8.0 g/cm3 | Psi – 30000 , MPa – 205 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | 40 % |
Round Bars Weight Chart
| Size (mm) | Weight (kg/m) | Size (mm) | Weight (kg/m) | Size (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 7 x 7 | 0.337 | 19 x 19 | 2.479 | 38 x 38 | 9.916 |
| 8 x 8 | 0.44 | 20 x 20 | 2.747 | 40 x 40 | 10.988 |
| 9 x 9 | 0.556 | 21 x 21 | 3.029 | 42 x 42 | 12.114 |
| 10 x 10 | 0.687 | 22 x 22 | 3.324 | 45 x 45 | 13.906 |
| 11 x 11 | 0.831 | 24 x 24 | 3.956 | 48 x 48 | 15.822 |
| 12 x 12 | 0.989 | 25 x 25 | 4.292 | 50 x 50 | 17.168 |
| 13 x 13 | 1.161 | 26 x 26 | 4.642 | 53 x 53 | 19.29 |
| 14 x 14 | 1.346 | 28 x 28 | 5.384 | 55 x 55 | 20.774 |
| 15 x 15 | 1.545 | 30 x 30 | 6.181 | 60 x 60 | 24.723 |
| 16 x 16 | 1.758 | 32 x 32 | 7.032 | 65 x 65 | 29.015 |
| 17 x 17 | 1.985 | 34 x 34 | 7.939 | 70 x 70 | 33.65 |
| 18 x 18 | 2.225 | 36 x 36 | 8.9 | 75 x 75 | 38.629 |
Nickel Alloy Round Bar
| ASTM / ASME SB 336 Round Bars | UNS 2200 Round Bar (NICKEL 200 Round Bar) |
| UNS 2201 Round Bar (NICKEL 201 Round Bar) | UNS 4400 Round Bar (MONEL 400 Round Bar) |
| UNS 8020 Round Bar (ALLOY 20 / 20 CB 3 Round Bar) | UNS 8825 Round Bar (INCONEL 825 Round Bar) |
| UNS 6600 Round Bar (INCONEL 600 Round Bar) | UNS 6601 Round Bar (INCONEL 601 Round Bar) |
| UNS 6625 Round Bar (INCONEL 625 Round Bar) | UNS 10276 Round Bar (HASTELLOY C 276 Round Bar) |
| HASTELLOY C 22 Round Bar | HASTELLOY B2 Round Bar |
| HASTELLOY B3 Round Bar |
Alloy Steel Round Bar
| EN8 Round Bar | EN9 Round Bar |
| EN14A Round Bar | EN15B Round Bar |
| EN16 Round Bar | EN18 Round Bar |
| EN19 Round Bar | SAE4340 / EN24 Round Bar |
| DIN 1.2714 / DB6 Round Bar | Din 1.2343/H11 Round Bar |
| Din 1.2344/H13 Round Bar | EN 25 Round Bar |
| EN 26 Round Bar | EN 30B Round Bar |
| EN31 Round Bar | EN 36C Round Bar |
| EN39B Round Bar | EN41B Round Bar |
| EN 42 Round Bar | 60Si7 Round Bar |
| EN47 Round Bar | EN351 Round Bar |
| EN353 Round Bar | EN354 Round Bar |
| EN355 Round Bar | 31CrV3 Round Bar |
| SAE1025 Round Bar | SAE1541H Round Bar |
| SAE4130 Round Bar | SAE4135 Round Bar |
| SAE4140 Round Bar | SAE4145 Round Bar |
| SAE4145H Round Bar | SAE8620 Round Bar |
| SAE8640 Round Bar | SAE52100 Round Bar |
| S355J2 Round Bar | ST52.3 Round Bar |
| C45 Round Bar | 30CrNiMo8 Round Bar |
| 34CrNiMo6 Round Bar | 20X2H4MA Round Bar |
| 38XC Round Bar | 18X2H4MA Round Bar |
| 20X2H4A Round Bar | 27MnCrB5 Round Bar |
| 32CrB4 Round Bar | 25CrMo4 Round Bar |
| 42CrMo4 Round Bar | 20MnCr5 Round Bar |
| 16MnCr5 Round Bar | Alloy Steel F1 Round Bar |
| Alloy Steel F5 Round Bar | Alloy Steel F9 Round Bar |
| Alloy Steel F11 Round Bar | Alloy Steel F12 Round Bar |
| Alloy Steel F22 Round Bar | Alloy Steel F91 Round Bar |
Stainless Steel Round Bar
| ASTM / ASME SA 403 GR WP “S” / “W” / “WX” Round Bar | 201 Round Bar |
| 202 Round Bar | 303 Round Bar |
| 304 Round Bar | 304L Round Bar |
| 304H Round Bar | 304N Round Bar |
| 304LN Round Bar | 309 Round Bar |
| 310H Round Bar | 316 Round Bar |
| 316H Round Bar | 317 Round Bar |
| 317L Round Bar | 321 Round Bar |
| 321H Round Bar | 347 Round Bar |
| 347H Round Bar | 410 Round Bar |
| 420 Round Bar | 416 Round Bar |
| 430 Round Bar | 431 Round Bar |
| 430F Round Bar | 17-4PH Round Bar |
Titanium Round Bar
| Titanium Gr 2 Round Bar | Titanium Gr 3 Round Bar |
| Titanium Gr 4 Round Bar | Titanium Gr 5 Round Bar |
| Titanium Gr 7 Round Bar |
Applications & Uses of Round Bar
- Machined Components
- Pump Shafts
- Valves
- Fasteners
- Machine Tools
- Dairy Equipment
- Surgical & Medical Parts
- Threaded Bars, Studs, Bolts, Pins
- Hinges and Handles
- Oil & Gas Industry
- Petrochemical Industry
Kaizen Steel Industries Export to
Burundi, Comoros, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Malawi, Mauritius, Mayotte, Mozambique, Reunion, Rwanda, Seychelles, Somalia, Tanzania, United Republic of Uganda, Zambia, Zimbabwe, Angola, Cameroon, Central African Republic, Chad, Congo (Brazzaville), Congo, Democratic Republic of the Equatorial Guinea, Gabon, Sao Tome and Principe, Algeria, Egypt, Libyan Arab Jamahiriya, Morroco, South Sudan, Sudan, Tunisia, Western Sahara, Botswana, Lesotho, Namibia, South Africa, Swaziland, Benin, Burkina Faso, Cape Verde, Cote d\\’Ivoire (Ivory Coast), Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mali, Mauritania, Niger, Nigeria, Saint Helena, Senegal, Sierra Leone, Togo
Anguilla, Antigua and Barbuda, Aruba, Bahamas, Barbados, Bonaire, Saint Eustatius and Saba, British Virgin Islands, Cayman Islands, Cuba, Curaçao, Dominica, Dominican Republic, Grenada, Guadeloupe, Haiti, Jamaica, Martinique, Monserrat, Puerto Rico, Saint-Barthélemy, St. Kitts and Nevis, Saint Lucia, Saint Martin, Saint Vincent and the Grenadines, Sint Maarten, Trinidad and Tobago, Turks and Caicos Islands, Virgin Islands (US), Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falkland Islands (Malvinas), French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela, Bermuda, Canada, Greenland, Saint Pierre and Miquelon, United States
Afghanistan, Armenia, Azerbaijan, Bangladesh, Bhutan, Brunei Darussalam, Cambodia, China, Georgia, Hong Kong, India, Indonesia, Japan, Kazakhstan, South Korea, Kyrgyzstan, Laos, Macao, Malaysia, Maldives, Mongolia, Myanmar (ex-Burma), Nepal, Phillipines, Singapore, Sri Lanka (ex-Ceilan), Taiwan, Tajikistan, Thailand, Timor Leste (West), Turkmenistan, Uzbekistan, Vietnam
Albania, Andorra, Belarus, Bosnia, Croatia, European Union, Faroe Islands, Gibraltar, Guerney and Alderney, Iceland, Jersey, Kosovo, Liechtenstein, Macedonia, Man, Island of Moldova, Monaco, Montenegro, Norway, Russia, San Marino, Serbia, Svalbard and Jan Mayen Islands, Switzerland, Turkey, Ukraine, Vatican City State (Holy See)
Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, United Kingdom
Bahrain, Iraq, Iran, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, United Arab Emirates, Yemen
