Duplex Steel Plate

Duplex stainless steels are extremely corrosion resistant, work hardenable alloys. Their microstructures consist of a mixture of austenite and ferrite phases. As a result, duplex stainless steels display properties characteristic of both austenitic and ferritic stainless steels. This combination of properties can mean some compromise when compared with pure austenitic and pure ferritic grades. Duplex stainless steels are in most cases, tougher than ferritic stainless steels. Strengths of duplex stainless steels can in some cases be double that for austenitic stainless steels. Whilst duplex stainless steels are considered resistant to stress corrosion cracking, they are not as resistant to this form of attack as ferritic stainless steels. However, the corrosion resistance of the least resistant duplex stainless steels is greater than that for the most commonly used grades of stainless steels, i.e. 304 and 316. Duplex steels are also magnetic, a property that can be used to easily differentiate them from common austenitic grades of stainless. Property data given in this document is typical for flat rolled products covered by EN 10088-2:2005. ASTM, EN or other standards may cover products sold. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this datasheet.


Size -4’ x 8’, 1500 x 3000, 2500 x 6000 and in Customized size.
Thickness-2mm to 50mm Thk.
Form-Coil, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc.

Services and certificates

Other Services-Cutting, Bending, Forging, Rolling, Heat Treatment, Minor Fabrication
Test Certificate-Manufacturer Test Certificate as per EN 10204 / 3.1 with NACE MR 01 75

Product Type

Duplex Steel Plate-UNS S31803 UNS S32205


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