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Duplex 2205

Stainless Steel Duplex 2205 is the most widely used duplex (ferritic/austenitic) stainless steel grade. It finds applications due to both excellent corrosion resistance and high strength. Duplex 2205 is a nitrogen enhanced stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steels.Duplex Steel 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.


Standard Duplex 2205
UNS S31803 / S32205

Werkstoff Nr. 1.4462

Mechanical & Physical Properties

Density 7.8 g/cm3

Melting Point 1440 °C (2625 °F)

Tensile Strength Psi-90000 , MPa-620

Yield Strength (0.2%Offset) Psi-65000 , MPa-450

Elongation 30 %

Chemical Composition


Duplex 2205
Ni 4.5-6.5

Fe Balance

Cr 22-23

Mo 3-3.5

C 0.030 max

Mn 2.0 max

Si 1 max

P 0.030 max

N 0.14-0.2

S 0.02 max


Chemical Industry
Oil & Gas Industry
Nuclear Industry
Food Processing
Fabrication Industry
Paper & Pulp Industry

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