Based in Houston, Texas, Luois Metals is a well-known producer and supplier of Alloy Steel F91 Bars and Rods. The highest requirements for strength, heat resistance, and long-term performance in demanding applications are met by the engineering of our F91 alloy steel products. F91 bars and rods are widely trusted in the oil and gas, petrochemical, and power generation industries and are frequently used in high-pressure and high-temperature environments. In order to provide reliable alloy steel solutions for harsh service conditions to both domestic and international markets, Luois Metals guarantees precision manufacturing, quality testing, and prompt delivery.
Chromium (8–9.5%), molybdenum (0.85–1.05%), vanadium, carbon, manganese, phosphorus, sulphur, and silicon make up the majority of Alloy Steel F91 Bars/Rods. Excellent creep resistance and high-temperature strength are provided by this modified 9Cr-1Mo alloy. Tensile strength of 585–760 MPa and yield strength of up to 415 MPa are among its mechanical characteristics. Under extreme heat and pressure loads, the material retains its structural integrity and can be heat-treated. Because of its strong resistance to oxidation and corrosion, alloy F91 is appropriate for harsh settings where longevity and performance are crucial over long service times.
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type |
Alloy Steel ASTM A182 F91 Round Bars |
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Type |
rod, square bar, Round bar, hexagon bar, flat bar, channel bar, angle bar, threaded bar |
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Standards |
Alloy Steel ASTM A182 F91 , A479, A314, GB4226-84, GB/T1220-2007, JISG4311-91, JIS G4318-98, EN 10095-99, GB4226-84, EN10088-3-2005, JIS G3033-2005, etc |
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Surface |
bright round bar, pickled round bar, black round bar |
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Package Details |
Standard seaworthy package(wooden boxes package,pvc package, or other package) |
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Technique |
Forged/Hot Rolled/Cold Drawn/Peeled |
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Range |
Range – 3.17mm to 350mm dia |
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Diameter |
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Length |
1m-9m or according to the customer’s requirement |
| Grade | C | Mn | Si | Mo | P | Cr |
| ASTM A182 F91 | 0.08 – 0.15 | 0.30 – 0.60 | 0.20 – 0.50 | 0.85 – 1.05 | 0.020 | 8.0 – 9.5 |
| Tensile Strength (ksi) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (ksi) min |
| 570 | 23 | 295 |
| STANDARD | WERKSTOFF NR. | UNS |
| ASTM A182 F91 | 1.4903 | – |
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SHAPE |
POUNDS PER FOOT |
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Round |
D2 x 2.67 |
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Hexagon |
D2 x 2.945 |
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Square |
D2 x 3.4 |
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Flat |
Thickness (in.) x Width (in.) x 3.4 |
Alloy Steel F91 Bars and Rods are primarily used in high-temperature and high-pressure applications such as power plants, pressure vessels, and heat exchangers due to their strength and resistance to oxidation.
Alloy Steel F91 offers excellent tensile strength, high-temperature resistance, and good oxidation and corrosion resistance, making it ideal for demanding industrial applications.
In high-pressure, high-temperature applications where durability and creep resistance are crucial, alloy steel F91 bars and rods are widely used. They are a preferred material in power plants for the production of steam piping systems, boiler tubes, headers, and superheaters. F91 is utilised in the oil and gas sector for high-stress parts in refineries, pressure vessels, and heat exchangers. It is also perfect for parts used in thermal power generation and chemical processing because of its resistance to oxidation and thermal fatigue. F91 is particularly useful in settings where extended exposure to high temperatures is necessary to preserve mechanical performance and structural integrity.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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