Shawn Flanges, based in Houston, USA, is a reputable manufacturer and supplier of top-notch Stainless Steel 348H Flanges, celebrated for their outstanding high-temperature performance and resistance to intergranular corrosion. The 348H grade is a niobium-stabilized austenitic stainless steel, perfect for applications that involve high temperatures and repeated thermal cycling. Shawn Flanges provides a diverse selection of weld neck, blind, slip-on, threaded, socket weld, and lap joint flanges, all crafted in accordance with ASTM A182, ASME B16.5, and other international standards. These flanges are designed for demanding industries that require consistent mechanical performance under thermal and pressure stresses.
Stainless Steel 348H Flanges from Shawn Flanges are made up of 18–20% chromium, 8–11% nickel, with niobium (columbium) added for stabilization, and a higher carbon content (up to 0.10%) compared to standard 348. These flanges provide improved creep and rupture strength. Their mechanical properties typically feature a tensile strength of 515 MPa, yield strength of 205 MPa, and elongation of 35–40%. Engineered for high-temperature service, 348H flanges resist sensitization and maintain their structural integrity even under prolonged heat exposure.
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges |
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Class/Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
Shawn Flanges, a leading supplier in Houston, USA, offers an extensive selection of Stainless Steel 348H 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.
Shawn Flanges’ Stainless Steel 348H Flanges find extensive use in nuclear power plants, heat exchangers, petroleum refineries, chemical processing, superheaters, and boiler components. They are particularly well-suited for high-temperature and high-pressure settings, where resistance to thermal fatigue and intergranular corrosion is crucial. These flanges are ideal for piping systems that require a long service life, structural stability, and safety under continuous heat exposure. With precise manufacturing and rigorous quality controls, Shawn Flanges guarantees that each 348H flange meets or surpasses industry standards, providing reliable and durable performance.
| SS 348H | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Yes, we offer custom sizes for Stainless Steel 348H 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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