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About ASTM A182 F11 Flange
ASTM A182 F11 WN RF Flanges are high-quality welding neck raised face flanges specifically designed for high-temperature, high-pressure, and demanding industrial piping systems. They are widely used in thermal power plants, nuclear power stations, petrochemical industries, and other fields. The welding neck raised face flange is one of the strongest and most reliable flange types. Its unique long-tapered hub design effectively distributes piping stress and significantly reduces stress concentration at welds, making it particularly suitable for high-pressure, high-temperature, or rapidly cycling temperature conditions. Combined with the raised face (RF) sealing design, it ensures reliable sealing of pipeline media and guarantees transportation safety.
A182 F11 WN RF Flanges are manufactured from ASTM A182 F11 Chromium-Molybdenum Steel. This steel composition features controlled carbon content (0.05–0.15%) to balance strength and weldability while reducing hardening tendency. The chromium (1.00–1.50%) and molybdenum (0.44–0.65%) content endow its core performance advantages: enhanced creep resistance, hydrogen corrosion resistance, oxidation resistance, and high-temperature strength. This allows the flange to maintain excellent strength at elevated temperatures (maximum service temperature approximately 593°C / 1100°F). These exceptional properties ensure the safety, reliability, and long service life of A182 F11 WN RF Flanges in critical piping systems within core industries like power generation, petrochemicals, and chemical processing.
| Alloy Steel A182 Grade F11 Flanges Chemical Composition | |||||||||
| Grade | C | Mn | Si | S | P | Cr | Mo | ||
| A182 F11 | 0.05-0.15 | 0.3-0.6 | 0.5-1 | 0.03 | 0.03 | 1-1.5 | 0.044-0.65 | ||
| Alloy Steel A182 Grade F11 Flanges Mechanical Properties | |||||||||
| Grade | Tensile Strength(Mpa) | Yield Strength(Mpa) | Elongation % | ||||||
| A182 F11 | 205 | 415 | 20 | ||||||
A182 F11 WN RF Flanges are available in multiple specifications. C&N Group supplies standard sizes ranging from 2 inches to 10 inches, pressure ratings of 600LB and 1500LB, and wall thickness matching options (SCH30/SCH80) to meet diverse piping design requirements. Products strictly comply with the ASTM A182 F11 standard. During manufacturing, solution annealing treatment is applied to the flange material to enhance strength, enabling the A182 F11 flanges to withstand temperatures up to 1010°C. Finished products undergo professional surface treatment, including application of black paint, varnish, oil, galvanization, or anti-corrosion coatings, to prevent cracks, bubbles, and corrosion, ensuring high-quality products are delivered to customers.
Material Of A182 F11 Steel Flange
| Nominal Pipe Size | Flanges Inside Diameter (ID) (inch) | Flanges Outside Diameter (OD) (inches) | ||||
| Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | ||
| 1/2 | 0.84 | 1.875 | 2.125 | 2.125 | 2.125 | 2.50 |
| 3/4 | 1.06 | 2.25 | 2.625 | 2.625 | 2.625 | 2.75 |
| 1 | 1.31 | 2.625 | 2.875 | 2.875 | 2.875 | 3.125 |
| 1 1/4 | 1.66 | 3 | 3.25 | 3.25 | 3.25 | 3.50 |
| 1 1/2 | 1.91 | 3.375 | 3.75 | 3.75 | 3.75 | 3.875 |
| 2 | 2.38 | 4.125 | 4.375 | 4.375 | 4.375 | 5.625 |
| 2 1/2 | 2.88 | 4.875 | 5.125 | 5.125 | 5.125 | 6.50 |
| 3 | 3.50 | 5.375 | 5.875 | 5.875 | 5.875 | 6.625 |
| 4 | 4.50 | 6.875 | 7.125 | 7.00 | 7.625 | 8.125 |
| 5 | 5.56 | 7.75 | 8.50 | 8.375 | 9.50 | 9.75 |
| 6 | 6.62 | 8.75 | 9.875 | 9.75 | 10.50 | 11.375 |
| 8 | 8.62 | 11 | 12.125 | 12.00 | 12.625 | 14.125 |
| 10 | 10.75 | 13.375 | 14.25 | 14.125 | 15.75 | 17.125 |
| 12 | 12.75 | 16.125 | 16.625 | 16.50 | 18.00 | 19.625 |
A182 F11 Pipe Flange Dimensions
| AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) | ASME B1.20.1, Pipe Threads, General Purpose ASME B16.1, Cast Iron Flanges and Flanged Fittings Classes 25, 125 and 250 ASME B16.5, Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24 ASME B16.11, Forged Fittings, Socket Welding and Threaded ASME B16.25, Buttwelding Ends ASME B16.36, Orifice Flanges ASME B16.47, Large Diameter Steel Flanges NPS 26 Through NPS 60 ASME B31.1, Power Piping ASME B31.3, Process Piping ASME B46.1, Surface Texture (Surface Roughness, Waviness, and Lay) |
Alloy Steel F11 Flanges elevated strength may require higher forming pressures. Annealing of SA 182 Gr F11 Steel Flanges is done by soaking thoroughly at 1725 Degree F – 1850 Degree F (941 Degree C – 1010 Degree C), water quenched, which can only be hardened by cold work.
C&N Group is a manufacturer, supplier, and exporter of alloy steel ASTM A182 F11 Flanges, offering various specifications of A182 F11 WN RF Flanges. If you are uncertain about flange selection, we will provide product selection advice and recommend the optimal solution based on your specific pipe size, pressure-temperature conditions, and pipe wall thickness requirements. Please contact us immediately if needed.
