Manufacturer of Carbon Steel Bars, Low Carbon Steel Bar, From 5mm to 250mm diameter Cold Rolled Carbon Steel Bar, Get Best Price of ASTM A105 Round Bar, Hot Rolled A105 Bar.
A leading manufacturer, supplier and exporter of Carbon Steel Round Bars, offering high-performance solutions tailored for diverse industrial needs. These round bars are recognized for their robustness, precision, and cost-effectiveness, making them suitable for both domestic and international markets. Engineered with quality and reliability in mind, they serve as essential components in heavy-duty and structural applications.
Carbon Steel Round Bars are available in diameters ranging from 6mm to 100mm, with customizable lengths and surface finishes based on project specifications. The bars meet key standards such as ASTM A105, ASTM A36, AISI 1018, EN8, C45, and IS 2062, and are supplied in hot rolled, cold drawn, or normalized conditions. Their excellent machinability, dimensional accuracy, and weldability make them ideal for both general-purpose and specialized applications.
Carbon Steel Round Bars are widely used across industries like construction, oil & gas, automotive, heavy machinery, power generation, railways, and shipbuilding. They are commonly used for shafts, axles, fasteners, gears, pins, and structural frameworks, especially in areas where strength and fatigue resistance are critical. Their adaptability allows them to function well in both dynamic and static load environments.
These round bars offer a range of performance advantages, including high tensile strength, excellent wear resistance, and good weldability. Their versatility makes them suitable for machining and fabrication, while their cost-effectiveness provides economic value in large-scale production. With a long service life and reliable performance under stress, Carbon Steel Round Bars are a smart choice for industries looking for durable and high-performing raw materials that support structural integrity and operational efficiency.
We Supply the ASTM A105 Carbon Steel Round Bar, Carbon Steel Centerless Ground Round Bar, Carbon Steel A36 Bars, Buy A105 Carbon Steel Round Bar, C45 Round Bar.
Carbon Steel Round Bars Specifications
| Standard | ASTM A105, A36 / ASME SA105, SA36 |
|---|---|
| Carbon Steel Square bar size | 4 to 100mm |
| CS Hollow Bar | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Low Carbon Steel Hex Bar size | 2-100mm A/F |
| Carbon Steel Angle bar size | 3mm*20mm*20mm~12mm*100mm*100mm |
| CS Rectangles Size | 33 x 30mm to 295 x 1066mm |
| Low Carbon Steel Flat bar size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Carbon Steel Channel Bar | 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
| CS Section | 3.0 to 12.0mm thickness |
| Low Carbon Steel Round bar size | Diameter: 3-~800mm |
| Carbon Steel Billet Size | 1/2″ to 495mm Diameter |
| Carbon Steel Surface | Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
| CS Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Low Carbon Steel Technique | Carbon Steel Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
| Carbon Steel Condition | Hardened & tempered, annealed |
| 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 |
| Form | Carbon Steel Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square Bar, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
| Processing | Bar cutting to 650mm |
| Our Carbon Steel Round bar conforms to NACE MR0175/ISO 15156 | |
Types of Carbon Steel Round Bars
Hot Rolled Round Bars
Manufactured by hot rolling, offering excellent strength and durability.
Cold Drawn Round Bars
Precision-made with a smooth surface finish, ideal for machining.
Peeled & Polished Round Bars
Enhanced surface finish with high dimensional accuracy
Centerless Ground Round Bars
Extremely precise tolerance with a fine, smooth surface.
Forged Round Bars
High-strength bars for heavy-duty industrial applications.
Bright Round Bars
High-quality, smooth surface bars used in precision applications.
Black Round Bars
Raw, unfinished bars used in industrial applications requiring further processing.
Equivalent of Carbon Steel Round Bars
| Standard | Equivalent Grades | |||||
|---|---|---|---|---|---|---|
| DIN | SAE/AISI | BS | IS | EN | JIS | |
| EN43B | CK45 | 1045 | 080A47 | – | EN43B | – |
| EN42 | CK75 | 1074 | – | 80C6 | EN42 | – |
| EN8C | CK45 | 1040,1045 | 080A40 | 45C8 | EN8C | – |
| SAE1541 | 36Mn7 | SAE1541 | 150M36 | 37C15 | EN15,15A | SMn438 |
| EN8A | CK45 | 1040,1045 | 080A40 | 45C8 | EN8A | – |
| EN8B | CK45 | 1040,1045 | 080A40 | 45C8 | 45C8 | – |
| EN8 | CK45 | 1040,1045 | 080A40 | 45C8 | EN8 | – |
| C35 | C35 | 1035 | – | 35C8, C35Mn75 | – | – |
| SAE1038 | CK38 | 1038 | – | – | – | – |
| EN43C | – | 1050 | – | C50 | EN43C | – |
| CK45 | CK45 | – | – | 45C8 | 1045 | – |
| EN15B | 36Mn5 | 1536 | 150M36 | 37Mn2, 37C15 |
EN15B | – |
| EN32B | CK15 | 1015,1016,101 8 |
– | C14 | EN32B | – |
| EN9 | CK55 | 1055 | 070M55 | C55 | EN9 | – |
| EN8D | CK45 | 1040,1045 | 080A40 | 45C8 | EN8D | – |
| EN42B | C67 | 1065 | – | 65C6 | EN42B | – |
| EN43 | C55 | 1055 | 080M50 | 60C6 | EN43 | – |
Chemical Composition of Carbon Steel Round Bars
| 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 | – | – | – |
Mechanical Properties of Carbon Steel Round Bars
| Mechanical Properties | Metric | English |
|---|---|---|
| Tensile Strength, Yield | 250 MPa | 36300 psi |
| Compressive Yield Strength | 152 MPa | 22000 psi |
| Tensile Strength, Ultimate | 400 – 550 MPa | 58000 – 79800 psi |
| Modulus of Elasticity | 200 GPa | 29000 ksi |
| Poissons Ratio | 0.26 | 0.26 |
| Bulk Modulus | 160 GPa | 23200 ksi |
| Elongation at Break | 20 % | 20 % |
| 23 % | 23 % | |
| Shear Modulus | 79.3 GPa | 11500 ksi |
Carbon Steel Round Bar Size Chart
| Size in inch. | Round | Square | Hexagon | Size in inch. | Round | Square | Hexagon |
|---|---|---|---|---|---|---|---|
| 1/16 | .010 | .013 | .012 | 11/16 | 1.262 | 1.607 | 1.392 |
| 5/64 | .017 | .022 | .019 | 45/64 | 1.320 | 1.681 | 1.456 |
| 3/32 | .023 | .029 | .025 | 23/32 | 1.380 | 1.756 | 1.521 |
| 7/64 | .031 | .039 | .034 | 47/64 | 1.440 | 1.834 | 1.588 |
| 1/8 | .042 | .053 | .046 | 3/4 | 1.502 | 1.913 | 1.656 |
| 9/64 | .053 | .067 | .058 | 25/32 | 1.630 | 2.075 | 1.797 |
| 5/32 | .065 | .083 | .072 | 13/16 | 1.763 | 2.245 | 1.944 |
| 11/64 | .079 | .100 | .087 | 27/32 | 1.901 | 2.421 | 2.096 |
| 3/16 | .094 | .120 | .104 | 7/8 | 2.045 | 2.603 | 2.254 |
| 13/64 | .110 | .140 | .121 | 29/32 | 2.193 | 2.792 | 2.418 |
| 7/32 | .128 | .163 | .141 | 15/16 | 2.347 | 2.988 | 2.588 |
| 15/64 | .147 | .187 | .162 | 31/32 | 2.506 | 3.191 | 2.763 |
| 1/4 | .167 | .213 | .184 | 1 | 2.670 | 3.400 | 2.945 |
| 17/64 | .188 | .240 | .207 | 1-1/16 | 3.015 | 3.838 | 3.324 |
| 9/32 | .211 | .269 | .233 | 1-1/8 | 3.380 | 4.303 | 3.727 |
| 19/64 | .235 | .300 | .259 | 1-3/16 | 3.766 | 4.795 | 4.152 |
| 5/16 | .261 | .332 | .288 | 1-1/4 | 4.172 | 5.313 | 4.601 |
| 21/64 | .288 | .360 | .318 | 1-5/16 | 4.600 | 5.857 | 5.072 |
| 11/32 | .316 | .402 | .348 | 1-3/8 | 5.049 | 6.428 | 5.567 |
| 23/64 | .345 | .439 | .381 | 1-7/16 | 5.518 | 7.026 | 6.085 |
| 3/8 | .376 | .478 | .414 | 1-1/2 | 6.008 | 7.650 | 6.625 |
| 25/64 | .408 | .519 | .450 | 1-9/16 | 6.519 | 8.301 | 7.189 |
| 13/32 | .441 | .561 | .486 | 1-5/8 | 7.051 | 8.978 | 7.775 |
| 27/64 | .475 | .605 | .524 | 1-11/16 | 7.604 | 9.682 | 8.385 |
| 7/16 | .511 | .651 | .564 | 1-3/4 | 8.178 | 10.41 | 9.018 |
| 29/64 | .548 | .698 | .604 | 1-13/16 | 8.773 | 11.17 | 9.673 |
| 15/32 | .587 | .747 | .647 | 1-7/8 | 9.388 | 11.95 | 10.35 |
| 31/64 | .627 | .798 | .692 | 1-15/16 | 10.02 | 12.76 | 11.05 |
| 1/2 | .668 | .850 | .736 | 2 | 10.68 | 13.60 | 11.78 |
| 33/64 | .710 | .904 | .783 | 2-1/16 | 11.36 | 14.46 | 12.53 |
| 17/32 | .754 | .960 | .831 | 2-1/8 | 12.06 | 15.35 | 13.30 |
| 35/64 | .799 | 1.017 | .881 | 2-3/16 | 12.78 | 16.27 | 14.09 |
| 9/16 | .845 | 1.076 | .932 | 2-1/4 | 13.52 | 17.21 | 14.91 |
| 37/64 | .893 | 1.136 | .985 | 2-5/16 | 14.28 | 18.18 | 15.75 |
| 19/32 | .941 | 1.199 | 1.038 | 2-3/8 | 15.06 | 19.18 | 16.61 |
| 39/64 | .992 | 1.263 | 1.094 | 2-7/16 | 15.87 | 20.20 | 17.49 |
| 5/8 | 1.043 | 1.328 | 1.150 | 2-1/2 | 16.69 | 21.25 | 18.40 |
| 41/64 | 1.096 | 1.395 | 1.209 | 2-9/16 | 17.53 | 22.33 | 19.34 |
| 21/32 | 1.150 | 1.464 | 1.268 | 2-5/8 | 18.40 | 23.43 | 20.29 |
| 43/64 | 1.205 | 1.535 | 1.329 | 2-11/16 | 19.29 | 24.56 | 21.27 |
Heat Treatment of Carbon Steel Round Bar
| Grade | Heat Treatment | |||
|---|---|---|---|---|
| Hardening Temperature | Quenching Medium | Tempering Temperature | Brinell Rock well hardness | |
| EN-1A | – | – | – | – |
| EN-42 | 600-700 | DIRECT HARDENING | – | 40-45 |
| EN-9 | 850-900 | OIL | 200-250 | 55-60 |
| EN-24 (V 130) | 830-860 | OIL | 540-680 | 45-55 |
| EN-8 | 750-900 | OIL | 150-200 | – |
| EN-44 | 650-750 | OIL | 150 | 45-50 |
| EN-19 (V 320) | 900-950 | OIL | 200-225 | 45-55 |
| EN-353 | 840-870 | OIL | 150-200 | 62-64 |
| EN-45 | 830-860 | OIL | 470-520 | 50-55 |
| EN-351 | 850-860 | OIL | 175-200 | 62-64 |
| EN-31 R-100 | 820-860 | OIL | 180-225 | 59-65 |
| EN-36C E-200 |
780-860 | OIL | 170-210 | 61-63 |
Weight chart of Carbon Steel Round Bars
| Weight | Diameter | Weight | Diameter |
|---|---|---|---|
| per metre (kg) | (inches) | per metre (kg) | (mm) |
| 0.14 | 3/16 Inch | 0.10 | 4 mm |
| 0.06 | 1/8 Inch | 0.06 | 3 mm |
| 0.39 | 5/16 Inch | 0.22 | 6 mm |
| 0.25 | 1/4 Inch | 0.16 | 5 mm |
| 0.77 | 7/16 Inch | 0.40 | 8 mm |
| 0.56 | 3/8 Inch | 0.30 | 7 mm |
| 1.22 | 9/16 Inch | 0.89 | 12 mm |
| 1.00 | 1/2 Inch | 0.62 | 10 mm |
| 1.89 | 11/16 Inch | 1.40 | 15 mm |
| 1.56 | 5/8 Inch | 1.22 | 14 mm |
| 3.07 | 7/8 Inch | 2.01 | 18 mm |
| 2.25 | 3/4 Inch | 1.59 | 16 mm |
| 4.03 | 1 Inch | 2.48 | 20 mm |
| 3.57 | 24 mm | ||
| 3.00 | 22 mm | ||
| 3.88 | 25 mm |
Worldwide Supply of Carbon Steel Round Bars
Russia, Bahrain, Cyprus, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, Turkey, United Arab Emirates (UAE), Yemen, United States of America (USA), Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom, Vatican City.
