Specialist in Manufacturing Industrial Steel Fasteners

Duplex Steel Sheets & Plates

We are a specialist distributor, processor and supplier of Duplex stainless steels sheets and plates – covered under ASTM A240/A240M. Standard size Duplex 2205/UNS S31803 sheets and plates are readily available ex-stock, while custom cut sizes can be supplied on request. We are suppliers of ASTM A240 Stainless Steel Duplex sheets and plates made by world’s leading mills, such as Jindal Stainless Ltd., POSCO, DKC- Korea, European Mills, NTK- Japan, TISCO, Aperam and others. We can supply cut to size Stainless Steel Duplex sheets, with both narrow and wide widths.

An ISO 9001:2008 Certified Company, Vision Alloys is a leading stockholder, supplier and exporter of Duplex 2205, UNS S31803 Stainless Steel Coils, Sheets and Plates in India and Worldwide. Duplex Stainless Steel Coils and Plates can be cut to your specifications and supplied with complete set of mill test reports. Custom length and width up to 2000 mm can be made available in case of stainless steel Duplex sheets and coils. Exports is Our Specialty!

Alloy 2205 (UNS S31803) is one of the most recognized and widely used duplex stainless steel grade, with excellent general corrosion resistance and superiority over grade 304 or 316 in most environments. Vision Alloys is a stockholder and supplier of various grades of duplex stainless steels including UNS 31803 (F51) and UNS 32205 (F60) Alloy 2205. The ratio of ferrite to austenite in Duplex stainless steel is approximately 50:50.

The characteristic feature of duplex stainless steels is their dual phase microstructure, comprising of approximately 50% of austenitic and 50% of ferrite. The yield strength of duplex stainless steel is typically double that of austenitic stainless steel.

Duplex fittings, duplex pipes and duplex plates are one of the key product items of Vision Alloys and are widely supplied from stock to various industries such as chemical, petrochemical, marine, oil and gas and transportation. Duplex pipes, tubing’s and fittings are widely used for oil field piping works and heat exchangers, duplex plates are used in manufacturing vessels, while duplex bars are used for manufacturing fasteners and high strength pump shafts.

Duplex stainless steel plates are considered as a cost effective grade due to lower nickel and molybdenum contents than their austenitic counterparts of similar corrosion resistance. Due to the lower alloying content, duplex stainless steels plates are generally lower in cost. Also, due to higher yield strength it could also be possible to reduce the thickness of duplex stainless steel products, compared to austenitic stainless steel. The dual benefit of lower prices and weight savings make duplex stainless steels plates economically very effective for project managers.

Brand: Indian Origin, European Origin, Japanese Origin, US Origin, Korea Origin, Thailand Origin, Taiwan Origin Manufacturer: POSCO, Aperam, Jindal Stainless, DKC Korea, Thyssenkrup, Baosteel, TISCO, SAIL, VDM, Nippon Metal Size Range: 2.0 to 50 mm in width of 1000mm, 1250mm, 1500mm, 2000mm

The ASTM A240 specification covers chromium, chromium-nickel, and chromium-manganese-nickel stainless steel plate, sheet, and strip for pressure vessels and for general applications. The steel shall conform to the requirements as to chemical composition specified. The material shall conform to the mechanical properties specified.

Duplex Stainless Steel – Alloy 2205 (UNS S31803) Specifications :

  • Duplex Plates, Sheet, Coil, and Strip: ASTM A240, ASME A 240
  • Duplex Grade Forgings: ASTM A182 UNS S31803 – Forgings Grade F51
  • Duplex Grade Castings: ASTM A890 grade 4A
  • Seamless Duplex Pipes / Tubes: ASTM A 789 / 790, ASME SA 789 / 790
  • Welded Duplex Pipes / Tubes: ASTM A 789 / 790, ASME SA 789 / 790
  • Duplex Bars, Rods, Wire: ASTM A 276 / 479, ASME SA 276 / 479
  • Duplex Pipe Fittings & Flanges: ASTM A 815, ASME SA 815

Stainless Steel Duplex 2205 Sheets, Duplex Plates Chemical Composition, %

CR NI MO C N
22.0-23.0 4.50-6.50 3.00-3.50 .030 Max 0.14-0.20
Mn Si P S Fe
2.00 Max 1.00 Max .030 Max .020 Max Balance

Physical & Mechanical Properties of Stainless Steel Duplex 2205 Sheets, Plates :

  DUPLEX STAINLESS STEEL
Density 7.805
Melting Range,℃ 1450 ℃
Elongation % 25 min.
Tensile Strength (Mpa) 655
Yield Strngth (Mpa) 450
Hardness (Brinell) 293 max

Vision Alloys exports Duplex Steel Sheets & Plates to countries like Saudi Arabia, United Arab Emirates, Singapore, Malaysia, Germany, Iran, United Kingdom, Italy, Israel, Russia, United States Of America, South Africa, Kenya, Nigeria, Phillipines.

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