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.
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 |
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 |
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 % |
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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