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Super Duplex S32750 · Super Duplex 2507 Stainless Steel · WNR 1.4410 · UNS S32750

Super Duplex S32750 Stainless Steel Supplier | Super Duplex S32750 Stainless Steel Manufacturer | Super Duplex S32750 Stainless Steel Exporter

Super Duplex S32750 also known as SAF 2507 or Super Duplex 2507. Super Duplex Stainless Steel Grade with UNS S32750 (1.4410 / 2507) is a high super duplex stainless steel with a PRE value of min.42*. Super Duplex Material, supplied by Oshwin Overseas is characterized by very good chloride corrosion resistance, combined with very high mechanical strength. Super Duplex Stainless Steel Properties (1.4410 / 2507) combines the most desirable characteristics of both ferritic and austenitic steel. Duplex 2507 or SAF 2507 is a super duplex stainless steel developed by Oshwin Overseas for applications that demand high strength and corrosion resistance. Alloy 2507 has 25% chromium (25Cr Duplex), 4% molybdenum, and 7% nickel also known as X2CrNiMoN25.7.4. This high molybdenum, chromium and nitrogen content causes high resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking. The Super Duplex 2507 has undergone a number of modifications resulting in Super Duplex UNS S32750. Thus, Super Duplex S32750 must be procured only from trusted vendors like Oshwin Overseas. Super Duplex Stainless Steel also is known as Sandvik SAF 2507 / SAF 2507, is a Sandvik-owned trademark.

Oshwin Overseas is one of the leading Exporter, Supplier, and Manufacturer of Super Duplex S32750 (Super Duplex UNS S32750) 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 Stainless 2507 in forms like Super Duplex S32750 Pipes (ASTM A790), Super Duplex S32750 Tubes (ASTM A789), Super Duplex S32750 Flanges (ASTM A182), Super Duplex S32750 Fasteners, Super Duplex S32750 Pipe Fittings (ASTM A403 / ASTM A815), Super Duplex S32750 Tube Fittings, Super Duplex S32750 Forged Fittings (ASTM A182 / ASTM A473), Super Duplex S32750 Sheet Plate, Super Duplex S32750 Wire Mesh and Super Duplex S32750 Round Bar (ASTM A276 / ASTM A479).

Oshwin Overseas manufactures Super Duplex Stainless Steel to be used in aggressive environments with properties like toughness, high strength, corrosion resistance in a large number of organic and inorganic acids. While the use of Super Duplex S32750 (1.4410 / 2507) is not recommended for exposure to temperatures more than 572F. The chemical composition of S32750 and S32760 are similar; however, the latter contains slightly more copper and tungsten. The copper content (min. 0.5, max 1.0) permits excellent resistance to corrosion in many non-oxidizing and mineral acids like hydrochloric and sulfuric acid.

2507 Super Duplex Stainless Steel (Super Duplex UNS S32750), manufactured by Oshwin Overseas is particularly suited for service in highly corrosive conditions and where high strength is required, in aggressive environments such as warm chlorinated seawater and acidic, chloride containing media. The properties of Super Duplex 2507 Stainless Steel (1.4410 / 2507) are being widely used in offshore oil and gas exploration and production and in heat exchanger in petrochemical and chemical processing. The Super Duplex Stainless Steel is also suitable for hydraulic and instrumentation applications in tropical marine environments. Super Duplex is listed in NACE MR 01 75 for sour service UNS S32750 and having gained ASME Approval for Pressure Vessel applications it can be used in a wide variety of applications.

Super Duplex S32750 Stainless Steel Forms

Super Duplex S32750 Pipes

  • Super Duplex  S32750 Seamless Pipe
  • Super Duplex S32750 Welded Pipe

Super Duplex S32750 Tubes

  • Super Duplex S32750 Seamless Tubes
  • Super Duplex S32750 Welded Tubes

Super Duplex S32750 Bars

  • Super Duplex S32750 Square Bar
  • Super Duplex S32750 Hexagon Bar
  • Super Duplex S32750 Flat Bar
  • Super Duplex S32750 Round Bar
  • Super Duplex S32750 Threaded Bar
  • Super Duplex S32750 Hollow Bar

Super Duplex S32750 Wire Mesh

Super Duplex S32750 Sheet Plate

Super Duplex S32750 Flange

  • Super Duplex S32750 Blind Flange
  • Super Duplex S32750 Slip On Flange
  • Super Duplex S32750 Lap Joint Flange
  • Super Duplex S32750 Weld Neck Flange
  • Super Duplex S32750 Threaded Flange
  • Super Duplex S32750 Socket Weld Flange

Super Duplex S32750 Tube Fittings

  • Super Duplex S32750 Union Tube Fittings
  • Super Duplex S32750 Connector Tube Fittings
  • Super Duplex S32750 Elbow Tube Fittings
  • Super Duplex S32750 Tee Tube Fittings
  • Super Duplex S32750 Adapter Tube Fittings
  • Super Duplex S32750 End Reducer Tube Fittings
  • Super Duplex S32750 Plug Tube Fittings
  • Super Duplex S32750 Cap Tube Fittings
  • Super Duplex S32750 Nut Tube Fittings
  • Super Duplex S32750 Ferrule Tube Fittings

Super Duplex S32750 Pipe Fittings

  • Super Duplex S32750 Elbow Pipe Fittings
  • Super Duplex S32750 Tee Pipe Fittings
  • Super Duplex S32750 Reducer Pipe Fittings
  • Super Duplex S32750 Couplings Pipe Fittings
  • Super Duplex S32750 Stub Ends Pipe Fittings
  • Super Duplex S32750 Cross Pipe Fittings
  • Super Duplex S32750 Bends Pipe Fittings
  • Super Duplex S32750  Nipples Pipe Fittings

Super Duplex S32750 Fastener

  • Super Duplex S32750 Bolts
  • Super Duplex S32750 Screw
  • Super Duplex S32750 Nuts
  • Super Duplex S32750 Washer

Super Duplex S32750 Forged Fittings

  • Super Duplex S32750 Socket Weld Forged Fittings
  • Super Duplex S32750 Threaded Forged Fittings


GradeTypeUnified Numbering System (UNS)Forgings GradesWerkstoff-nr.EuronormAFNORDIN Standards
2507Super DuplexS32750F531.4410en 1.4410X2CrNiMoN25-7-4Z3CN25.06Azdin 1.4462



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S32750 Pipes

Super Duplex S32750 Pipes

Seamless Pipe, ERW Pipe (Welded Pipe)
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S32750 Tubes

Super Duplex S32750 Tubes

Seamless Tube, ERW Tube (Welded Tubes)
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S32750 Flange

Super Duplex S32750 Flange

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

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S32750 Fastener

Super Duplex S32750 Fastener

Bolts, Screw, Nuts and Washer

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S32750 Pipe Fittings

Super Duplex S32750 Pipe Fittings

Elbow, Tee, Reducer, Couplings, Stub Ends, End Caps, Cross, Pipe Bends and Pipe Nipples
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S32750 Tube Fittings

Super Duplex S32750 Tube Fittings

Union, Connector, Elbow, Tee, Adapter, Tube End Reducer, Plug, Cap, Tube Nut and Ferrule.
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S32750 Forged Fittings

Super Duplex S32750 Forged Fittings

Socket Weld Fittings & Threaded Fittings
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S32750 Bar

Super Duplex S32750 Bar

Square Bar, Hex Bar (Hexagon Bar), Flat Bar, Round Bar, Steel Rod, Threaded Bar, Hollow Bar, Bright Bar, Spring Steel Bar, Cold Drawn Bar.
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S32750 Sheet Plate

Super Duplex S32750 Sheet Plate

Sheet and Plate
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S32750 Wire Mesh

Super Duplex S32750 Wire Mesh

Wire and Wire Mesh
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Super Duplex 2507 Properties


  • Combination of properties given by austenitic and ferritic structure.
  • Superior resistance to chloride pitting and crevice corrosion.
  • Excellent resistance to stress corrosion cracking (SCC) in chloride bearing enviroments
  • High resistance to general corrosion in acids.
  • Low rate of thermal expansion.
  • Excellent resistance to erosion corrosion
  • Excellent resistance to corrosion fatigue
  • Very high mechanical strength.
  • Suggested for applications up to 600° F.
  • Good weldability and workability.
Applications of Super Duplex 2507 Stainless Steel


  • Chemical Processing Industry – Transport and Storage, pressure vessels, tanks, piping, and heat exchangers.
  • FGD / Effluent Scrubber Systems.
  • Oil and Gas exploration and processing equipment – piping, tubing, and heat exchangers.
  • Paper and Pulp Industry Digesters, Bleaching equipment and Stock-Handling Systems, Chip Pre-steaming vessels.
  • Marine Industry and Seawater systems – Cargo Tanks for Ships, High chloride environments,
  • Biofuels Plant, Desalination plants.
  • Flue gas desulfurization / cleaning equipment.


Duplex MaterialTypesRange
Fasteners Socketweld,SCREWED, NPT, BSP, BSPT 1/4" NB to 4" NB in Class 2000, 3000, 6000, 9000
Round Bar3.0 - 50.8 mm/50.8 – 300mm Forged, Annealed
Square BarAF2mm – 14mm/AF6.35mm, 9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm
Rectangular Bar6.35 x 12.7mm, 6.35 x 25.4mm, 12.7 x 25.4mm
Hex BarAF5.8mm–17mm
Sheet Plate Coil1000 mm x 2000 mm0.1mm to 12 mm Thickness
1220 mm x 2440 mm (4' x 8')
1250 mm x 2500 mm
1500 mm x 3000 mm
2000 mm x 4000 mm
2000 mm x 2000 mm

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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 Duplex Stainless Steel - UNS S32750
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