SMO 254 | Super Austenitic Stainless Steel | UNS S31254 | WNR 1.4547 | 6Mo |  6 Molybdenum

254 SMO Stainless Steel Applications

SMO 254 Stainless Steel Supplier | SMO 254 Stainless Steel Manufacturer | SMO 254 Stainless Steel Exporter | SMO 254 Stainless Steel Distributor

SMO 254 (en 1.4547 / 254 smo material) also known as 6mo Stainless Steel (6Mo) with UNS S31254 is a high Molybdenum (Molybdenum Metal) i.e 6 Molybdenum and Nitrogen alloyed Super Austenitic Stainless Steel with low Carbon content. 6Mo Material (6Moly) is designed with a combination of Nickel and Copper (ck3mcun), impact tough resistance to chloride stress corrosion cracking, and pitting and crevice corrosion with strength that is twice that of the stainless steel 300 series, especially in environments containing halite Ions, e.g. chloride, bromide and fluoride solutions. 254 SMO Stainless Steel (S31254 / Mo 6) is also characterized by high ductility and impact strength. With high levels of chromium, molybdenum, and nitrogen (ck3mcun material), 6 Moly Stainless Steel (SMO254) is frequently used in high chloride environments, such as brackish water, seawater, pulp mill bleach plants, etc.

6 Moly Material ( EN 1.4547/ UNSS31254 Alloy 6Mo / SMO254) has been reported to be a cost-effective substitute for high nickel and titanium alloys. 6 molybdenum (Molybdenum Metal) is known to possess excellent workability as well. Super Austenitic Stainless Steel (S31254 Stainless Steel / Mo 6) is compatible with the common Austenitic Stainless Steels. 1.4547 Stainless Steel (254 SMO) is readily fabricated and welded. 254SMO® is a registered with Outokumpu Oyj and 254 SMO™ is a trademark owned by Avesta Sheffield AB. Thus, 6 molybdenum stainless steel (SS 254 / F44 Material) must be procured only from trusted vendors like Oshwin Overseas. 254 SMO Stainless Steel (SMO 254)also known as Sandvik 254 SMO / Avesta 254 SMO.

Oshwin Overseas is one of the leading Exporter, Supplier, and Manufacturer of Super Austenitic Stainless Steel (UNS 31254 / SMO 254 / 6Mo) to various heavy executive industries in India and Abroad. Oshwin Overseas have grown efficiently in the field of Industrial Supplies offering a wide array of 254 SMO Stainless Steel in forms like 254 SMO Pipe (ASTM A312), 254 SMO Pipe Fittings (ASTM A403), 254 SMO Flange (ASTM A182 F44), 254 SMO Forged Fittings (ASTM A473 F44).

Oshwin Overseas all are fully equipped with all the necessary tools, machines, and equipment that help us produce large consignments and deliver them to our respected consumers well within their desired time. Our SMO 254 (Molybdenum Alloy) Products are created and examined to international Standards, under the strict direction of highly qualified and experienced technocrats. In order to maintain the highest standards of quality 6 moly stainless steel (6Mo Material) we make sure that each and every unit is individually inspected and tested, thereby cropping out the scope of any sort of anomaly. With a strong belief in dynamism & change, our company successfully adheres to the latest trends and offers our respectable clientele with best-in-class product ambit satisfying our clients beyond their expectations. Our UNS S31254Mo 6 (SS254 / SMO Material) Products are used by several European, Africa, and Gulf-based companies.

Oshwin Overseas certified by ISO 9001: 2008 for continued excellence in providing impeccable quality Super Austenitic Stainless Steel (UNS 31254 / SMO 2546Mo Stainless Steel) products to its customers. Oshwin Overseas has exploded greatly & improved phenomenally with respect to quality & quantity. It has recently been widely acknowledged to meet the growing demand for quality 254 SMO Stainless Steel (1.4547 / F44 Material) products throughout the world. Today we’re catering the demand of our renowned Companies around the world.

Oshwin Overseas is a global supplier of 254 SMO Supplier in India, 254 SMO Supplier in UAE, 254 SMO Supplier in Abu Dhabi, 254 SMO Supplier in Dubai, 254 SMO Supplier in UK, 254 SMO Supplier in England, 254 SMO Supplier in London, 254 SMO Supplier in US, 254 SMO Supplier in California, 254 SMO Supplier in Texas, 254 SMO Supplier in New York, 254 SMO Supplier in Georgia, 254 SMO Supplier in New Jersey, 254 SMO Supplier in Australia, 254 SMO Supplier in Brazil, 254 SMO Supplier in Canada, 254 SMO Supplier in France, 254 SMO Supplier in Germany, 254 SMO Supplier in Greece, 254 SMO Supplier in Indonesia, 254 SMO Supplier in Italy, 254 SMO Supplier in Malaysia, 254 SMO Supplier in Netherland, 254 SMO Supplier in Philippines, 254 SMO Supplier in Russia, 254 SMO Supplier in Saudi Arabia, 254 SMO Supplier in Singapore, 254 SMO Supplier in South Africa, 254 SMO Supplier in South Korea, 254 SMO Supplier in Spain, 254 SMO Supplier in Sweden, 254 SMO Supplier in Thailand, 254 SMO Supplier in Ukraine.

6 Molybdenum Stainless Steel (SMO 254) Forms

254 SMO Pipe

  • SMO 254 Steel Seamless Pipe
  • SMO 254 ERW Pipe

254 SMO Forged Fittings

  • SMO 254 Socket Weld Fittings
  • SMO 254 Threaded Fittings

254 SMO Flange

  • SMO 254 Blind Flange
  • SMO 254 Slip On Flange
  • SMO 254 Lap Joint Flange
  • SMO 254 Weld Neck Flange
  • SMO 254 Threaded Flange
  • SMO 254 Socket Weld Flange

254 SMO Pipe Fittings / SMO 254 Buttweld Fittings

  • SMO 254 Elbow
  • SMO 254 Tee
  • SMO 254 Reducer
  • SMO 254 Couplings
  • SMO 254 Stub Ends
  • SMO 254 Cross
  • SMO 254 Pipe Bends
  • SMO 254 Pipe Nipples
GradeTypeUnified Numbering System (UNS)Forgings GradesWerkstoff-nr.EuronormAFNORDIN Standards
6Mo grade254 SMOS31254F441.4547en 1.4547FeMi35Cr20Cu4Mo2Z1 CNDU 20.18.06Azdin 1.4547
[table “71” not found /]
S31254 Pipe

SMO 254 Stainless Steel Pipes

Seamless Pipe and Welded Pipe (ERW Pipe)
6MO Flange, ASTM A182 F44

254 SMO Flange

Blind Flange, Slip On Flange, Weld Neck Flange, Threaded Flange and Socket Weld Flange

SMO254 Pipe Fittings

254 SMO Pipe Fittings

Elbow, Tee, Reducer, Couplings, Stub Ends, End Caps, Cross, Pipe Bends and Pipe Nipples
254 SMO Forged Fittings

SMO254 Forged Fittings

Socket Weld Fittings & Threaded Fittings
254 SMO Material Properties
  • Excellent resistance to pitting and crevice corrosion.
  • High resistance to general corrosion.
  • High resistance to stress corrosion cracking.
  • Higher strength than conventional austenitic stainless steels.
  • Good weldability.
Super Austenitic Stainless Steel Applications
  • Seawater Equipment such as, seawater cooling, cooling water pipes, ballast water systems, firefighting systems etc.
  • Hydraulic and instrumention tubing.
  • Equipment in pulp bleaching plants.
  • Components in gas cleaning systems.
  • Tanks and pipelines for chemicals with high halide contents.
SMO 254 UNS S312540.02 max19.5-20.51.0 max6.0-6.517.5-18.50.18-0.220.03 max0.8 max0.01 max
0.2% Proof Stress (N/mm2 ) [ksi] minimum300 [43.5]
Tensile Strength (N/mm2) [ksi] minimum650
Elongation (%) minimum35
Hardness (HBN)270 max
Reduction of Cross Section Area (%)50
Density (Kg.m-1)8000
Magnetic Permeability<1.05
Young’s Modulus (N/mm2)200 x 103
Specific Heat, 20°C (J.Kg-1.°K-1)500
Specific Electrical Resistance, 20°C (µO.m)0.85
Thermal conductivity, 20°C13.5

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  • Commercial Invoice including HS Code
  • Packing List including number of boxes, net weight, gross weight, Marks & Numbers
  • Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
  • Material Test Certificates as per EN 10204 3.1, EN 10204 3.2
  • Test Certificates certifying NACE MR0103, NACE MR0175


  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177


The different ways in which our products are packed are:

  • Shrink-wrapped
  • Wooden Boxes
  • Wooden Pallets
  • Wooden Crates
  • Carton boxes


We mark Duplex 2205 as needed with the most suitable & visible marking techniques. Standard Marking System :-

  • Manufacturer’s Name or Trademark
  • Material Designation
  • Size Designation
  • Rating Designation
  • Melt Designation
  • Marking for Identification

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Super Austenitic Stainless Steel (SMO 254) - UNS S31254
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