Home > Alloy Steel > Alloy Steel F91 Flanges
Alloy steel F91 flanges are premium components engineered for high performance in demanding industrial applications. Blended with chromium, molybdenum, and other alloys, these flanges provide exceptional strength, durability, and resistance to high temperatures and pressures. They are widely used in critical applications such as oil and gas, petrochemicals and power generation. As well as its mechanical properties, alloy steel ensures a safe, leak-proof connection to F91 flange piping systems. It makes them an ideal choice for environments demanding strong and durable solutions for a long time.
Specifications : ASTM A182 / ASME SA182
Dimensions : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size : 1/2″ to 36″
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
| Grade | C | Mn | Si | S | P | Cr | Mo |
| A182 F91 | 0.08 – 0.12 | 0.3 – 0.6 | 0.5 | 0.01 | 0.02 | 8.5 – 9.5 | 0.85 – 1.05 |
| Grade | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation % |
| A182 F91 | 415 | 585 | 20 |
At PipingMart, we take pride in being the largest supplier and manufacturer in the UAE, offering cutting-edge solutions for all your piping needs. With state-of-the-art production plants strategically located in the UAE, we boast a vast inventory of over 25,000 tons of premium-quality materials readily available in stock.
Contact us to get a quick quote for your requirement.
We offer These Alloy Steel F91 Flanges as per DIN, ISO, JIS or ANSI Standard.
Since Alloy Steel F91 Flanges have excellent mechanical qualities and are resistant to wear corrosion, and high temperatures, they are widely used in various industries. These flanges are widely used in the oil and gas, petrochemical, power generation, and aerospace industries. They play an important part in joining equipment, valves, and pipe systems. They are perfect for applications exposed to severe operating conditions, such as high temperatures, high pressures, and corrosive environments, because of their exceptional strength, toughness, and wear resistance.
Yes, Alloy Steel F91 Flanges are weldable. They exhibit good weldability, allowing for effective joining and fabrication using standard welding techniques. To maintain the material’s mechanical properties and ensure the integrity of the welds, it is essential to follow proper welding procedures, including preheating, controlled heat input, and post-weld heat treatment. This ensures the flanges perform reliably in demanding industrial applications.
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