Common Grade: Duplex 2205
UNS: S32205 / S31803
EN: 1.4462
Chemical Composition (%)
| Element | Composition |
|---|---|
| Carbon (C) | 0.03 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.030 max |
| Sulphur (S) | 0.020 max |
| Nickel (Ni) | 4.5 – 6.5 |
| Chromium (Cr) | 21.0 – 23.0 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Nitrogen (N) | 0.08 – 0.20 |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 620 MPa |
| Yield Strength | ≥ 450 MPa |
| Elongation | ≥ 25 % |
| Hardness | ≤ 290 HB |
Equivalent Grades
UNS S32205 / S31803
DIN EN 1.4462
ASTM A182 F51 / F60
ASTM A815
ASTM A790
Applicable Standards for Butt Weld Fittings
ASTM A403
ASME SA 403
ASME B16.9 / B16.28
EN 10253
Types Available
Elbow (45°, 90°)
Tee (Equal / Reducing)
Reducer (Concentric / Eccentric)
Stub End
End Cap
Key Features
High mechanical strength
Smooth internal surface for better flow
Excellent corrosion and oxidation resistance
Leak-proof welded joints
Long service life with low maintenance
Manufacturing Standards
ASTM A403
ASME SA 403
ASME B16.9 / B16.28
EN 10253
Surface Finish
Pickled & Passivated
Mill Finish
Polished Finish (as required)
Applications
Oil & gas pipelines
Chemical & petrochemical industries
Power plants & refineries
Water treatment plants
Food processing & pharmaceutical industries
Shipbuilding & offshore applications