

| UNS Number | S32205 |
|---|---|
| Werkstoff Number | 1.4462 |
Duplex 2205 stainless steel (both ferritic and austenitic) is used extensively in applications that require good corrosion resistance and strength. The S31803 grade stainless steel has undergone a number of modifications resulting in UNS S32205, and was endorsed in the year 1996. This grade offers higher resistance to corrosion.
At temperatures above 300°C, the brittle micro-constituents of this grade undergo precipitation, and at temperatures below -50°C the micro-constituents undergo ductile-to-brittle transition; hence this grade of stainless steel is not suitable for use at these temperatures.
Duplex 2205 Stainless Steel is a nitrogen-enhanced duplex used in applications requiring high strength and excellent corrosion resistance. It is designed to combine improved resistance to stress corrosion cracking, pitting and crevice corrosion. Duplex 2205 provides nearly double the corrosion resistance typical in other austenitic stainless steels.
Best Stainless supplies Duplex 2205 SS for a variety of industries including oil & gas, petrochemical, marine and pulp & page factories.

Typical applications
| Chemical Components | C | Si | Mn | P | S | Cr | Ni | Mo | N |
| Minimum | – | – | – | – | – | 22 | 4.5 | 3 | 0.14 |
| Maximum | 0.03 | 1 | 2 | 0.03 | 0.02 | 23 | 6.5 | 3.5 | 0.2 |
| Tensile Strength
σb Mpa |
Yield Point
σs Mpa |
Elongation
δ % |
Hardness
HBW |
| ≥655 | ≥450 | long.
≥25 |
≤293 |
| Product Form | Size Range From | Size Range To |
| Sheet & Plate | 0.30 mm | 25 mm |
| Round Bar | 4 mm | 380 mm |
| Tube | 6 mm | 260 mm |