Duplex 2205
UNS S31803 / S32205EN 1.4462JIS SUS329J3L
Stock statusEx-stock Dubai
Typical lead time2 - 3 working days ex Dubai
The most widely used duplex grade. Roughly double the yield strength of 316L, allowing thinner and lighter sections while delivering far better chloride stress corrosion cracking resistance.
- Twice the yield strength of 316L
- High chloride SCC resistance
- Lower nickel content stabilises cost
Available forms & sizes
| Form | Size range |
|---|---|
| Plates | 1.5 - 100 mm thk, up to 2500 mm wide |
| Seamless Pipes & Tubes | 1/2" - 24" NB, SCH 5S - SCH 160 |
| Welded Pipes | 6" - 48" OD |
| Round Bars | 6 - 500 mm dia |
| Flanges | 1/2" - 48", 150# - 2500# |
| Fittings | 1/2" - 48", SCH 10S - SCH 160 |
Chemical composition (%)
| Element | Min | Max |
|---|---|---|
| C | - | 0.030 |
| Cr | 22.0 | 23.0 |
| Ni | 4.5 | 6.5 |
| Mo | 3.0 | 3.5 |
| N | 0.14 | 0.20 |
Mechanical properties
| Property | Value | Unit |
|---|---|---|
| Yield Strength (0.2%) | 450 min | MPa |
| Tensile Strength | 620 min | MPa |
| Elongation | 25 min | % |
| Hardness | 293 max | HBW |
Physical properties
| Property | Value | Unit |
|---|---|---|
| Density | 7.80 | g/cm3 |
| PREN | 35 | - |
| Max Service Temperature | 300 | C |
Typical applications
Offshore topside piping
Chemical tanker cargo tanks
Desalination evaporators
Pressure vessels
