At Esha Steel, we proudly offer premium Carbon Steel A350 LF2 Bars to industries across Kolkata and nationwide. Manufactured to meet ASTM A350 LF2 standards, these bars are specifically designed for low-temperature applications requiring exceptional toughness, ductility, and reliability. Esha Steel combines precision manufacturing, stringent quality control, and timely delivery to ensure consistent product performance. Trusted by the oil, gas, petrochemical, and pressure vessel industries, our LF2 bars provide long-lasting structural integrity, superior weldability, and dependable service in demanding environments.
Carbon Steel A350 LF2 Bars are made from low-carbon steel with controlled levels of manganese, sulfur, phosphorus, and silicon to ensure excellent mechanical properties at low temperatures. Mechanically, LF2 bars offer a minimum tensile strength of 415 MPa, yield strength of 240–275 MPa, and exceptional impact toughness, even at sub-zero temperatures. Their uniform microstructure provides excellent ductility, machinability, and weldability. Heat treatment can be applied to further improve strength and toughness. These properties make LF2 bars suitable for pressure-critical applications where consistent performance and safety are essential.
| Standard | ASTM A350, ASME SA350 |
|---|---|
| Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Round bar Size | Diameter: 3-~800mm |
| Hex Bar Size | 2-100mm A/F |
| Square Bar Size | 4 to 100mm |
| Angle Bar Size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Rectangular Bars Section | 3.0 to 12.0mm thickness |
| 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) |
| Threaded Bar Billet Size | 1/2 to 495mm Diameter |
| Rectangular Size | 33 x 30mm to 295 x 1066mm |
| 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 |
| Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Surface | Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
| Condition | Hardened & tempered, annealed |
| Technique | Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
| Processing | Bar cutting to 650mm |
| Form | Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
| Grade | C | Si | Mn | P | S | Cr | Mo | Cu | Nb | V |
| LF2 | ≤0.30% | 0.15 – 0.30% | 0.60 – 1.35% | ≤0.035% | ≤0.040% | ≤0.30 % | ≤0.12% | ≤0.40% | ≤0.02% | ≤0.08% |
| Grade | Tensile strength, (MPa) | Yield (0.2%) (MPa) | Elongation (%) | Reduction of Area (%) | Hardness HB |
| LF2 | 485-655(70-95KSi) | 250(36KSi) | 22 | 30 | ≤197HB |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Esha Steel is a trusted manufacturer and supplier of high-quality Carbon Steel A350 LF2 Bar in Kolkata India. We specialize in premium steel products, including Carbon Steel, Alloy Steel, Mild Steel, and Galvanized Steel. Our extensive inventory also includes Pipes, Tubes, Flanges, Forged Fittings, Sheets, and Plates. Committed to fast delivery and exceptional customer service, we use only the finest raw materials to ensure superior strength, durability, and performance in critical industrial applications.
| STANDARD | UNS | WERKSTOFF NR. |
| ASTM A350 LF2 | K03011 | 1.0508 |
| US Bar | Metric | Japanese | Canadian/ASTM | ||||
| Diameter(Inch) | Carbon Steel LF2 Bar Size | Diameter (millimeter) | Carbon Steel LF2 Bar Size | Diameter (millimeter) | Carbon Steel LF2 Bar Size | Diameter (millimeter2) | Carbon Steel LF2 Bar Size |
| 0.250 | #2 | 5 | 5 | 6 | 6 | 100 | 10M |
| 0.375 | #3 | 5.5 | 5.5 | 10 | 10 | 200 | 15M |
| 0.500 | #4 | 6 | 6 | 13 | 13 | 300 | 20M |
| 0.625 | #5 | 7 | 7 | 16 | 16 | 500 | 25M |
| 0.750 | #6 | 8 | 8 | 19 | 19 | 700 | 30M |
| 0.875 | #7 | 9 | 9 | 22 | 22 | 1000 | 35M |
| 1.000 | #8 | 10 | 10 | 25 | 25 | 1500 | 45M |
| 1.125 | #9 | 11 | 11 | 29 | 29 | 2500 | 55M |
| 1.250 | #10 | 12 | 12 | 32 | 32 | ||
| 1.375 | #11 | 14 | 14 | 35 | 35 | ||
| 1.500 | #12 | 16 | 16 | 38 | 38 | ||
| 1.625 | #13 | 18 | 18 | 41 | 41 | ||
| 1.750 | #14 | 20 | 20 | 44 | 44 | ||
| 1.875 | #15 | 22 | 22 | 48 | 48 | ||
| 2.000 | #16 | 25 | 25 | 51 | 51 | ||
| 2.250 | #18 | 28 | 28 | 57 | 57 | ||
| 32 | 32 | ||||||
| 36 | 36 | ||||||
| 40 | 40 | ||||||
| 44 | 44 | ||||||
| 50 | 50 | ||||||
| Diameter in inch | Size in inch/MM | Weight Lbs/ft & Kg/M |
| 1/16 | 0.0625 1.5875 | 0.010 / 0.01488 |
| 1/8 | 0.125 3.175 | 0.042 / 0.062496 |
| 3/32 | 0.0938 2.38252 | 0.0240 / 0.035712 |
| 5/32 | 0.1563 3.97002 | 0.065 / 0.09672 |
| 7/32 | 0.2188 5.55752 | 0.128 / 0.190464 |
| 3/16 | 0.1875 4.7625 | 0.094 / 0.139872 |
| 1/4 | 0.25 6.35 | 0.167 / 0.248496 |
| 5/16 | 0.3125 7.9375 | 0.260 / 0.38688 |
| 9/32 | 0.2813 7.14502 | 0.211 / 0.313968 |
| 3/8 | 0.375 9.525 | 0.376 / 0.559488 |
| 1/2 | 0.5 12.7 | 0.668 / 0.993984 |
| 7/16 | 0.4375 11.1125 | 0.512 / 0.761856 |
| 9/16 | 0.5625 14.2875 | 0.844 / 1.255872 |
| 11/16 | 0.6875 17.4625 | 1.264 / 1.880832 |
| 5/8 | 0.625 15.875 | 1.043 / 1.551984 |
| 3/4 | 0.75 19.05 | 1.502 / 2.234976 |
| 7/8 | 0.875 22.225 | 2.045 / 3.04296 |
| 13/16 | 0.8125 20.6375 | 1.761 / 2.620368 |
| 15/16 | 0.9375 23.8125 | 2.35 / 3.4968 |
| 1 1/16 | 1.0625 26.9875 | 3.012 / 4.481856 |
| 1 | 1 25.4 | 2.671 / 3.974448 |
| 1 1/8 | 1.125 28.575 | 3.38 / 5.02944 |
| 1 1/4 | 1.25 31.75 | 4.173 / 6.209424 |
| 1 3/16 | 1.1875 30.1625 | 3.77 / 5.60976 |
| 1 5/16 | 1.3125 33.3375 | 4.598 / 6.841824 |
Carbon Steel A350 LF2 Bars are widely used in pressure vessels, flanges, valves, and fittings in oil, gas, and petrochemical industries. They are ideal for low-temperature applications, including cryogenic systems, pipelines, and structural components exposed to sub-zero environments. LF2 bars are also used in mechanical engineering projects, offshore platforms, and chemical processing equipment that require high toughness and impact resistance. Their excellent weldability and machinability allow fabricators to create precise, reliable components. Overall, A350 LF2 bars ensure long-term durability, safety, and operational efficiency in demanding low-temperature industrial and structural applications.
Esha Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Kolkata India.
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