Yash Fittings, in Mumbai, India, is a prominent manufacturer and supplier of industrial pipe fittings of high quality, delivering precision-made solutions for demanding purposes. Among its specialty items are SMO 254 Buttweld Fittings, which are tailored for superior performance in extremely corrosive environments. SMO 254 is an austenitic stainless steel with high molybdenum and nitrogen content, offering superior resistance to pitting, crevice corrosion, and chloride stress corrosion cracking. These connections are best used on offshore platforms, desalination plants, chemical processing, and marine applications where strength and resistance to corrosion are paramount.
Specifications : ASTM A403 / ASME SA403
Dimensions : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size : 3/4″ – 12″
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.
SMO 254 Butt weld Fittings have excellent chemical, mechanical, and physical properties and are very suitable for highly corrosive environments. SMO 254 is chemically a high-alloy austenitic stainless steel containing around 20% chromium, 18% nickel, 6% molybdenum, and with additional nitrogen added, which together impart exceptional resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. Mechanically, it possesses high tensile strength (approximately 650 MPa) and ductility, with very good impact toughness even at sub-zero temperatures. Physically, SMO 254 possesses good thermal conductivity and oxidation resistance, enabling it to perform well in both high-temperature and aggressive chemical environments.
| 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 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SMO 254 | 8.0 g/cm3 | 1320-1390 ℃ | 650 | 300 | 35 % |
Yash Fittings is a leading supplier of SMO 254 Buttweld Fittings in Mumbai, India. We offer an extensive range of SMO 254 Buttweld Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | WERKSTOFF NR. | UNS | JIS | SIS | GOST | AFNOR | EN |
| SMO 254 | 1.4547 | S31254 | – | 2378 | – | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 |
SMO 254 Buttweld Fittingsfrom Yash Fittings offer exceptional corrosion resistance, especially in seawater and harsh environments. They are known for their high strength, durability, and resistance to pitting and crevice corrosion, ensuring long-lasting performance. We provide precise manufacturing, quality control, and reliable service for diverse industrial applications.
All dimensions given in inches for common diameters and wall thicknesses. Dimensions in accordance with ASME B16.9. Other sizes, schedules and wall thicknesses also available. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Yes, custom sizes for SMO 254 Buttweld Fittings are available at Yash Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@yashfittings.com
SMO 254 Buttweld Fittings find extensive applications in industries where high resistance to corrosion, particularly in environments with high chloride and acid content, is demanded. They are best suited for uses in desalination plants, offshore oil and gas platforms, marine applications, and chemical processing facilities. These fittings are also employed in heat exchangers, flue-gas cleaning equipment, and pulp and paper manufacturing where high strength and pitting, crevice corrosion, and stress corrosion cracking resistance are essential. SMO 254’s enhanced strength and performance render it a favorite for demanding and long-lasting piping systems.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.








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