An ISO 9001:2008 Certified Company, Metline Industries (Steel Plates, Sheets and Coil Division) 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. Metline Industries 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 Metline Industries 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.
When compared to 2205 grade duplex stainless steel, 904L has similar corrosion resistant properties but lower mechanical strength. 2205 is also a lower cost option compared to 904L, but is not suitable for temperatures above 300°C. Grade 2205 is not generally suitable for use at temperatures above 300°C as it suffers from precipitation of brittle micro-constituents, nor below -50°C because of its ductile-to-brittle-transition.
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
ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
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 | TRADENAME | UNS NO. | WERKSTOFF NO. | DENSITY (G/CM3) |
| Duplex | F51 / 2205, F60 | S31803 / S32205 | 1.4462 | 7.805 |
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 |
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