Chuck Metals stands out as a top-notch manufacturer and supplier of high-temperature Alloy Steel F91 Bars and Rods right here in Singapore, Pulau Ujong. We cater to a variety of industries, including power generation, oil & gas, and petrochemical processing. F91 is a specially modified 9Cr-1Mo alloy steel, celebrated for its remarkable creep strength, oxidation resistance, and structural stability even in high-temperature settings. At Chuck Metals, we offer F91 bars and rods in a range of sizes and heat-treated conditions, all fully compliant with ASTM A182 specifications. With a solid reputation for quality, precision, and timely delivery, we provide our clients with reliable alloy steel solutions tailored for the most demanding applications.
Typically, Alloy Steel F91 Bars and Rods consist of about 9% chromium, 1% molybdenum, along with some vanadium, niobium, and nitrogen. This unique blend results in impressive tensile strength (620–860 MPa), outstanding thermal resistance, and long-lasting creep strength. F91 is available in a normalized and tempered state, ensuring top performance in high-temperature service. It also boasts good weldability, especially with the right preheat and post-weld heat treatment. Its microstructure remains stable even after prolonged exposure to high pressure and temperature, making it a perfect choice for components in power plants and superheater tubes.
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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 widely utilized in crafting components for supercritical and ultra-supercritical boilers, steam piping, turbine casings, headers, and pressure vessels. In the oil & gas industry, F91 is essential for high-temperature refining and processing units. Its excellent creep strength and oxidation resistance make it a go-to material for extreme environments where failure simply isn’t an option. F91 is highly preferred for both new installations and replacements in systems that demand reliable, long-lasting, and heat-resistant materials under continuous thermal stress.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chuck Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Singapore, Singapore
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