Shawn Flanges, located in Houston, USA, specializes in manufacturing and supplying Alloy Steel F91 Flanges. We provide top-notch high-temperature and high-pressure flange solutions tailored for critical industrial applications. Our F91 flanges are crafted to meet ASTM A182 and ASME standards, ensuring they perform exceptionally in power generation, petrochemical, and refinery systems. Renowned for their strength, resistance to oxidation, and durability, these flanges are perfect for demanding service conditions. At Shawn Flanges, we prioritize precision manufacturing, thorough testing, and timely delivery. Proudly serving both domestic and international clients, we offer reliable alloy steel flange products along with expert technical support.
Alloy Steel F91 flanges are crafted from a chromium-molybdenum-vanadium alloy, adhering to ASTM A182 F91 specifications. The typical chemical makeup features chromium (8–9.5%), molybdenum (0.85–1.05%), vanadium (0.18–0.25%), and carbon (0.08–0.12%). These alloying elements contribute to high creep strength, hardness, and oxidation resistance. The mechanical properties include a minimum yield strength of 275 MPa and tensile strength ranging from 585–760 MPa. F91 flanges can withstand temperatures up to 600°C (1112°F), making them perfect for high-temperature and high-pressure settings like steam pipelines, superheaters, and thermal power systems.
| Specifications | : | ASTM A182 / ASME SA182 |
| Size | : | 1/2″ (15 NB) to 48″ (1200NB) |
| Standards | : | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | : | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | : | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grade | C | Mn | Si | P | S | Cr | Mo |
| Alloy Steel F91 | 0.15 max | 0.3-0.6 | 0.5-1.0 | 0.03 | 0.03 | 8-10 | 0.9-1.1 |
| Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 380 | 585 | 20 % |
Shawn Flanges, a leading supplier in Houston, USA, offers an extensive selection of Alloy Steel F91 Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
Alloy Steel F91 flanges find extensive use in high-temperature and high-pressure environments, including thermal power plants, boiler systems, petrochemical refineries, and nuclear facilities. Their exceptional resistance to heat, pressure, and oxidation makes them ideal for critical applications involving superheated steam, hot gases, or corrosive fluids. Common flange types include weld neck, slip-on, and blind flanges, all designed to meet the rigorous demands of these industries.
Yes, we offer custom sizes for Alloy Steel F91 Flanges to meet specific project needs. Our team at Shawn Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@shawnflanges.us.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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