1.4462 (Duplex)
1.4462 is a duplex steel (austenitic-ferritic) with high strength and excellent resistance to pitting and stress-corrosion cracking – ideal for seawater and aggressive chemicals.
Application & properties
1.4462 is a duplex steel (austenitic-ferritic) with high strength and excellent resistance to pitting and stress-corrosion cracking – ideal for seawater and aggressive chemicals.
- Seawater and offshore applications
- Chemicals with high chloride load
- Highly loaded piping and vessels
Chemical composition
Typical values in wt.-% per EN standard (heat analysis).
| Element | Content (%) |
|---|---|
| C | ≤ 0.030 |
| Si | ≤ 1.00 |
| Mn | ≤ 2.00 |
| Cr | 21.0–23.0 |
| Ni | 4.5–6.5 |
| Mo | 2.5–3.5 |
| N | 0.10–0.22 |
Mechanical properties
Typical values at room temperature per EN standard.
| Property | Value |
|---|---|
| Yield strength Rp0.2 | ≥ 460 MPa |
| Tensile strength Rm | 640–840 MPa |
| Elongation A | ≥ 25 % |
Standards, equivalents & product forms
| Topic | Detail |
|---|---|
| Standards | EN 10216-5, EN 10088 |
| ASME/ASTM equivalent | ~ UNS S31803 / S32205 |
| Material no. | 1.4462 |
| Short name / aka | X2CrNiMoN22-5-3 · Duplex |
We supply 1.4462 (Duplex) as pipes, flanges and fittings – seamless or welded, on request with an EN 10204 3.1 / 3.2 mill certificate.
Frequently asked questions about 1.4462 (Duplex)
What is a duplex steel?
A steel with a mixed austenitic-ferritic microstructure – combining high strength with very good corrosion resistance.
What is 1.4462 used for?
Above all where standard stainless steels reach their limits with chlorides/seawater: offshore, desalination, aggressive chemicals.
Request 1.4462 (Duplex)?
Grade, standard, size, pressure rating and quantity are enough – on request with an EN 10204 3.1 / 3.2 mill certificate. Your quote usually the same day.
All data are typical values per the relevant EN standards for first orientation – without warranty. The applicable standard and the mill certificate of the delivery are decisive.