Home > Forged Fittings > SMO 254 Forged Fittings
Weston Stainless, a Midland, UK-based company, is a reliable source of stainless steel products of high quality, serving multiple industrial applications with precision-made materials. Of its high-end products, SMO 254 Forged Fittings are notable for their high strength and corrosion resistance. Made of SMO 254 (UNS S31254), a high-alloy austenitic stainless steel, the fittings come in a range of shapes such as elbows, tees, couplings, unions, and reducers. With high molybdenum and nitrogen levels, they offer superior resistance to pitting, crevice corrosion, and stress corrosion cracking, which makes them suitable for chemical, marine, and offshore service applications that need durability and reliability.
SMO 254 Forged Fittings contain around 20% chromium, 18% nickel, 6% molybdenum, 1% nitrogen, and low carbon content, making them highly resistant to corrosion. Mechanically, they possess a tensile strength of 650 MPa, yield strength of 300 MPa, and elongation of 35%, exhibiting high durability and flexibility. Their physical properties are a density of 8 g/cm³, thermal conductivity of 14.5 W/m·K, and a melting range of 1320-1390°C. These characteristics make SMO 254 Forged Fittings the best choice for high-temperature and high-pressure applications, which provide superior resistance to crevice corrosion, pitting, and stress corrosion cracking.
Specifications : ASTM B 366, ASME SB 366
Type : Socket Weld (S/W) & SCREWED (SCRD) – NPT, BSP, BSPT, Threaded Fittings
Size : 1/2″NB TO 4″NB IN
Class :2000LBS, 3000LBS, 6000LBS, 9000LBS, etc.
Standards : ASTM, ASME, ANSI 16.11, MSS SP-79,83,95,97,BS 3799
| Grade | % | Ni | Cr | Mo | Cu | N | C | Mn | Si | P | S |
SMO 254 | Min. | 17.5 | 19.5 | 6 | 0.5 | 0.18 | |||||
| Max. | 18.5 | 20.5 | 6.5 | 1 | 0.22 | 0.02 | 1 | 0.8 | 0.03 | 0.01 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation | |
| SMO 254 | 8.0 g/cm3 | 1320-1390 ℃ | 650 | 300 | 35 |
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SMO 254 Forged Fittings find extensive application in industries that demand high strength and better corrosion resistance. They are best suited for marine operations, such as piping of seawater, offshore installations, and ship construction, as a result of the excellent corrosion resistance against chloride. In the petrochemical and chemical industries, they find application in heat exchangers, process piping, and pressure vessels dealing with aggressive chemicals. They play an imperative role in desalination plants, pulp and paper mills, food and beverage plants, and pharmaceutical production. They are also applied in power plants, flue gas treatment systems, and other high-pressure applications where they are needed to be long-lasting.
These fittings are available in sizes from 1/8″ to 4″ and offer reliable, leak-free connections in high-pressure systems. They are commonly used in petrochemical, power generation, and oil and gas industries.
Threaded fittings, ranging from 1/8″ to 4″, provide ease of installation and maintenance. Suitable for low-pressure applications, they are widely used in plumbing, heating, and cooling systems.
These elbows, available in sizes from 1/8″ to 4″, allow for smooth directional flow changes. They are ideal for piping systems requiring high-strength connections and reduced flow resistance.
Threaded tees, in sizes ranging from 1/8″ to 4″, branch off the main line in a piping system. They provide reliable performance in various industrial and commercial applications.
These couplings, available in sizes from 1/8″ to 4″, join two pipes or fittings. They offer easy assembly and disassembly, making them suitable for maintenance and repair work.
Socket weld crosses, ranging from 1/8″ to 4″, are designed to connect four pipes at a single junction. They are used in high-pressure applications where a strong, leak-proof connection is essential.
SMO 254 Forged Fittings are supplied with necessary test certificates, such as Mill Test Certificates (MTC) according to EN 10204 3.1, third-party inspection reports, and material traceability documents, to ensure conformity to industry standards. They are safely packed in wooden crates, bubble wrapping, and waterproof materials to avoid damage during shipping. With a robust logistics network, timely delivery is guaranteed globally, ensuring that products arrive at customers in perfect condition and within the agreed-upon time.







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