Shawn Flanges, based in Houston, USA, stands out as a top manufacturer and supplier of SMO 254 Flanges, celebrated for their remarkable resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. SMO 254 (UNS S31254) is a super austenitic stainless steel crafted for use in highly corrosive settings, especially those with elevated chloride levels. These flanges are perfect for marine and chemical processing applications and come in various types, including weld neck, slip-on, socket weld, blind, and lap joint flanges. Adhering to ASTM A182, ASME B16.5, and other global standards, Shawn Flanges guarantees exceptional quality and performance.
SMO 254 Flanges from Shawn Flanges are made up of 19.5–20.5% chromium, 17.5–18.5% nickel, 6–6.5% molybdenum, 0.18–0.22% nitrogen, with the remainder being iron, all while maintaining a low carbon content. This unique blend provides outstanding resistance to chloride-induced corrosion and impressive strength. The mechanical properties include a tensile strength of at least 650 MPa, yield strength of at least 300 MPa, and excellent elongation of 35% or more. SMO 254 holds its structural integrity even under extreme chemical exposure and high pressure, making it a preferred choice for challenging service conditions. Its superb weldability and impact toughness further boost its reliability in demanding environments.
| Range | : | 1/2”~60” |
| Specification | : | ASTM A812 / ASME SA812 |
| Dimensions | : | ANSI/ASME B16.5, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Standards | : | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| 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) |
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
| SMO 254 | ≤0.020 | ≤0.80 | ≤1.00 | ≤0.030 | ≤0.010 | 20 | 18 | 6.1 | 0.20 | 0.7 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SMO 254 | 8.0 g/cm3 | 1320-1390 ℃ | 650 | 300 | 35 % |
Shawn Flanges, a leading supplier in Houston, USA, offers an extensive selection of SMO 254 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.
| STandARD | WERKSTOFF NR. | UNS | AFNOR | EN |
| SMO 254 | 1.4547 | S31254 | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 |
Shawn Flanges’ SMO 254 Flanges are perfect for seawater handling, desalination plants, heat exchangers, offshore oil platforms, and chemical processing facilities. Their exceptional resistance to saltwater corrosion, oxidizing acids, and halide environments makes them essential in marine engineering, pulp and paper production, and petrochemical applications. SMO 254 flanges are also utilized in flue gas cleaning systems and chloride-rich process streams, where standard stainless steels often fall short. Thanks to their high strength and long-lasting corrosion resistance, they help ensure reduced maintenance and increased longevity in various applications.
Yes, we offer custom sizes for SMO 254 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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