Yousef Steel, a reputable steel manufacturer and supplier located in Riyadh, Saudi Arabia, proudly offers top-quality **Carbon Steel ASTM A350 LF2 bars**. These bars are specifically crafted for low-temperature applications in critical industrial settings. You’ll find them extensively used in the oil & gas, petrochemical, power generation, and offshore industries, where strength, toughness, and reliability in sub-zero conditions are non-negotiable. Yousef Steel is committed to delivering consistent quality, adhering strictly to industry standards, and ensuring timely delivery to meet the rigorous demands of your projects.
ASTM A350 LF2 is a low-alloy carbon steel celebrated for its outstanding impact toughness at low temperatures, typically tested at –46°C (–50°F). These bars boast a minimum yield strength of 250 MPa and a minimum tensile strength of 485 MPa. The material undergoes normalization or normalization and tempering processes to guarantee uniform mechanical properties and enhance the grain structure. A350 LF2 bars also excel in machinability and weldability, making them perfect for fabricating flanges, fittings, valve bodies, and other forged components used in cryogenic and pressure systems.
| 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.
You’ll commonly find these bars in applications such as low-temperature pressure vessels, structural supports, flanged joints, and pipeline fittings, especially in cold climates or offshore environments. Yousef Steel provides ASTM A350 LF2 bars in round, square, or custom profiles and sizes, with options for heat treatment, surface finishes (black, pickled, or machined), and full traceability. All bars can be supplied with EN 10204 3.1/3.2 certification and third-party inspection to comply with international codes and meet customer specifications.
| 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 bar is widely used in industrial applications because of their excellent cruelty, weldability and strength. They are usually used in pipelines, pressure containers and low temperature flanges. These straps are ideal for the oil and gas industry, chemical processing plants and power generation due to their corrosion resistance and durability. In addition, they are used in valves, shafts and fittings for heavy applications. His versatility makes him a favorite alternative for engineering and structural projects.
Yousef 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 Riyadh, Saudi Arabia.
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