About Uns S31254 Seamless Pipe/Welded Pipe (254 SMO, 1.4547, 254SMO)
UNS S31254 / Alloy 6Mo / WNR 1.4547 / F44 / 254SMO Super Austenitic Stainless Steel
UNS S31254 is a highly corrosion-resistant super austenitic stainless steel with excellent corrosion resistance in severe corrosive environments such as high-temperature seawater.
We offer a comprehensive selection of seamless/welded stainless steel pipe, including UNS S31254 super austenitic stainless steel pipe, also known as 254SMo or WNR 1.4547. Made from high-quality materials and manufactured to strict manufacturing standards, these S31254 tubes are ideal for a variety of applications in seawater treatment systems, desalination plant equipment, chemical processing and flue gas desulfurization units.
UNS S31254 stainless steel pipe features:
- High Corrosion Resistance: Made from alloy UNS S31254, these pipes are highly corrosion resistant in harsh environments including high chloride and acidic conditions.
- HIGH STRENGTH: WNR 1.4547 pipe is constructed of high-strength super austenitic stainless steel, making it durable and reliable in a variety of applications.
- Excellent weldability: 6mo stainless steel pipe is easy to weld and fabricate, making it a versatile solution for complex piping systems.
- Meet industry standards: 254SMO super austenitic stainless steel pipe complies with the manufacturing standards of ASTM A269, ASTM A312 and ASTM A213 to ensure quality and reliability.
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The standard process for manufacturing S31254 pipe involves a series of steps. The first step is to melt the steel in an electric arc furnace. The steel is then refined using an argon-oxygen decarburization process. This process helps remove impurities like carbon and sulfur. The refined steel is then poured into a casting mold and solidified into a billet. The blank is then hot rolled into tubes.
SMO 254 Seamless Pipes Specifications
| Specifications | ASTM A 409 ASME SA 409 / ASTM A 312 ASME SA 312 / ASTM A 358 ASME SA 358 |
| Dimensions | ASTM, ASME and API |
| Size | 1/2″ – 48″ |
| Specialized in | Large Diameter Size |
| Thickness | 20 Swg., 18 Swg., 16 Swg., 14 Swg., 12 Swg., 10 Swg., & Sch. 10, Sch. 40, Sch. 80 etc. |
| Type | Seamless / ERW / Welded / Fabricated |
| Form | Round, Hydraulic Etc |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Treaded |
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SMO 254 Pipes Chemical Composition
| SMO 254 | Ni | C | Mo | Mn | Si | Fe | Cu | S | P | Cr |
| 17.5 – 18.5 | 0.02 max | 6 – 6.5 | 1 max | 0.8 max | – | 0.5 – 1 | 0.01 max | 0.03 max | 19.5 – 20.5 |
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SMO 254 Pipe Mechanical Properties
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.0 g/cm3 | 1320-1390 ℃ | 300 | 650 | 35 % |
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Equivalent Grades For 254 SMO Pipe
| STANDARD | UNS | WERKSTOFF NR. | AFNOR | EN | JIS | SIS | GOST |
| SMO 254 | S31254 | 1.4547 | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 | – | 2378 | – |
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