Home > Pipe Fittings > SMO 254 Pipe Fittings
Weston Stainless, Midland, UK-based, is one of the world’s leading supplier and manufacturer of high-quality stainless steel products with diverse industrial uses. The firm deals in SMO 254 Pipe Fittings, a corrosion-resistant high-alloy austenitic stainless steel grade that stands out for superior corrosion resistance especially in chloride-dominated and acidic exposures. Produced to Grade SMO 254, these fittings are available in all shapes such as elbows, tees, reducers, couplings, and bends. Made up of chromium, nickel, molybdenum, and nitrogen, SMO 254 Pipe Fittings provide superior strength, durability, and pitting resistance, which makes them suitable for marine, chemical, and offshore use.
SMO 254 Pipe Fittings contain around 19.5-20.5% Chromium, 17.5-18.5% Nickel, 6-6.5% Molybdenum, 0.18-0.22% Nitrogen, 1% Silicon, 1% Manganese, 0.03% Carbon, 0.03% Phosphorus, and 0.01% Sulfur, the rest being Iron. Their mechanical properties are tensile strength 650-850 MPa, yield strength around 300 MPa, elongation of 35-40%, and hardness up to 100 HB. Physically, they possess a density of 8 g/cm³, thermal conductivity of 14.5 W/m·K, and electrical resistivity of 850 nΩ·m, thus being very resistant and durable to harsh environmental conditions.
| Specifications | ASTM A403 / ASME SA403 |
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Size | Seamless Butt Weld Fittings: 1/2″ – 10″, Welded Butt Weld Fittings: 1/2″ – 48″ |
| Type | Seamless / Welded / Fabricated |
| Schedule | Sch 5 TO Sch XXS |
| Thickness | 20 Swg., 18 Swg., 16 Swg., 14 Swg., 12 Swg., 10 Swg., & Sch. 10, Sch. 40, Sch. 80 etc. |
| Grade | C | Mn | Si | S | Cu | Ni | Cr | Fe | Mo | P |
| 254 SMO | 0.07 max | 2.00 max | 1.00 max | 0.035 max | 3.00 – 4.00 | 32.00 – 38.00 | 19.00 – 21.00 | 29.85 min* | 2.00 – 3.00 | 0.045 ma |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 254 SMO | 8.1 g/cm3 | 1443 °C (2430 °F) | Psi -80,000, MPa -551 | Psi – 35,000, MPa – 241 | 30 % |
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SMO 254 Pipe Fittings find extensive application in high corrosion resistance and mechanical strength demanding industries. In marine and offshore industries, they are employed in shipbuilding, desalination plants, and oil and gas platforms because of their seawater corrosion resistance. They are employed in pipelines, heat exchangers, and reactors for aggressive chemicals in the chemical and petrochemical industries. Power stations, pulp and paper mills, and food processing facilities count on them for withstanding extreme conditions. SMO 254 Pipe Fittings are also employed in wastewater treatment, drug manufacturing, and aviation for dependable, long-term service.
Corrosion-resistant components designed for extreme environments. They offer excellent resistance to chloride-induced corrosion and high strength, making them ideal for marine and chemical applications.
Corrosion-resistant components used for seamless, strong connections in piping systems. They are ideal for marine, chemical, and offshore applications, ensuring durability and reliability.
Corrosion-resistant components designed for secure, leak-proof connections. They are ideal for high-pressure and high-temperature applications, ensuring durability and performance in harsh environments.
Corrosion-resistant components crafted without joints. They provide strong, leak-proof connections and are ideal for extreme environments, including marine and chemical processing applications.
Corrosion-resistant components designed to connect four pipes at a central junction. They offer durability and reliability in harsh environments, including marine and chemical industries.
Corrosion-resistant components that connect three pipes at a right angle. They ensure durable, reliable performance in extreme conditions, such as marine and chemical applications.
SMO 254 Pipe Fittings are accompanied by test certificates like Mill Test Certificates (MTC) according to EN 10204 3.1 or 3.2, third-party inspection certificates, and other quality documents for ensuring international compliance. They are packed safely in wooden crates, cartons, or bubble-packed plastic covers for transit protection. Trustworthy shipping and logistics services provide safe, efficient, and timely delivery to domestic and foreign customers.







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