About Uns S31254 Seamless Pipe Welded Pipe (254 SMO, 1.4547, 254SMO)

About UNS S31254 Seamless and Welded Pipe (254 SMO, 1.4547, 254SMO)

UNS S31254, also known as Alloy 6Mo, WNR 1.4547, F44, or 254SMO, is a high-performance super austenitic stainless steel designed for extreme corrosion resistance. It excels in harsh environments such as high-temperature seawater, chemical processing, and flue gas desulfurization systems.

We provide a wide range of high-quality seamless and welded stainless steel pipes made from UNS S31254, commonly referred to as 254SMO or WNR 1.4547. These pipes are manufactured using premium materials and strict quality control standards, ensuring durability and reliability in demanding industrial applications.

Key features of UNS S31254 stainless steel pipe include:

  • Exceptional Corrosion Resistance: Offers superior performance in high-chloride and acidic environments, making it ideal for marine and chemical industries.
  • High Strength: This super austenitic stainless steel provides excellent mechanical strength, suitable for high-pressure and high-temperature applications.
  • Excellent Weldability: Easy to weld and fabricate, allowing for flexible and complex piping system designs.
  • Compliance with Industry Standards: Meets ASTM A269, ASTM A312, and ASTM A213 specifications, ensuring consistent quality and performance.

The manufacturing process of S31254 pipes begins with melting the raw material in an electric arc furnace. The molten steel undergoes argon-oxygen decarburization to remove impurities like carbon and sulfur. After refining, the steel is cast into a billet and then hot-rolled into tubes, ensuring uniform structure and mechanical properties.

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 Conforms to ASTM, ASME, and API standards
Size Available in sizes ranging from 1/2” to 48”
Specialized in Large diameter pipes
Thickness 20 SWG, 18 SWG, 16 SWG, 14 SWG, 12 SWG, 10 SWG, Sch. 10, Sch. 40, Sch. 80
Type Seamless, ERW, Welded, Fabricated
Form Round, Hydraulic, and other custom shapes
Length Single random, double random, or cut-to-length
Ends Plain end, beveled end, threaded

SMO 254 Pipe 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°C 300 MPa 650 MPa 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 –

Whether you're working on desalination plants, offshore oil and gas projects, or chemical processing units, our SMO 254 pipes are engineered to deliver long-term performance under the most challenging conditions. With a focus on quality, innovation, and customer satisfaction, we ensure that every product meets the highest industry standards and exceeds expectations.

Sewing System

Sewing System,Automatic Bag Closing Machine,Bag Closing Equipment

GUANGZHOU TUSEN MACHINERY & EQUIPMENT CO., LTD , https://www.gztusen.com

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