Heer Fittings provides SMO 254 Pipe Fittings in Delhi, India, for highly corrosive environments and challenging industrial applications. All these fittings—elbows, tees, reducers, crosses, caps, and other common forms—are manufactured according to ASTM A403, ASME B16.9, and other international standards. SMO 254 (UNS S31254) is a super austenitic stainless steel designed for improved resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking in seawater, chemical processing, and pulp and paper mills.
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 has about 20% chromium, 18% nickel, 6% molybdenum, and traces of nitrogen and other elements that contribute to its corrosion resistance and mechanical properties. It has a tensile strength of ~650 MPa, yield strength of ~300 MPa, and elongation of approximately 35%. The presence of a high amount of molybdenum and nitrogen lends it a PREN of >42.5, making it extremely useful in chloride-containing environments. The weldability and formability of the alloy are also good with the ability to sustain performance under high pressure and high temperature.
| 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 % |
Heer Fittings one of the largest suppliers of Stainless Steel SMO 254 Pipe Fittings in Delhi, India. We specialize in providing a wide range of high-quality, durable fittings for various industrial applications. Our inventory includes elbows, tees, reducers, couplings, and other essential fittings designed to offer exceptional corrosion resistance and strength. Stainless Steel SMO 254 is known for its cost-effectiveness and excellent mechanical properties, making it ideal for industries such as construction, chemical processing, and food processing. With a commitment to customer satisfaction, timely delivery, and competitive pricing, we are the trusted choice for Stainless Steel SMO 254 Pipe Fittings in the India.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Stainless Steel SMO 254 Pipe Fittings from Heer 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.
Yes, custom sizes are available for Stainless Steel SMO 254 Pipe Fittings to meet specific requirements. We offer tailored solutions to ensure precise fit and performance for various applications. For more information, please contact us at sales@heerfittings.com.
| 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 Pipe Fittings are applied in offshore oil and gas platforms, desalination plants, heat exchangers, chemical processing vessels, marine exhaust systems, and manufacture of pharmaceuticals. They work particularly well in chloride-containing solutions, brine systems, and acidic process streams, where typical stainless steels such as 316L or 317L would fail. Because of its endurance and resistance to corrosion fatigue, SMO 254 is frequently chosen for long-term service in harsh conditions with low maintenance needs.
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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