Duplex (austenitic-ferritic)
1.4362 Duplex 2304 X2CrNiN23-4
Lean duplex (2304) with a balanced austenite/ferrite structure — roughly double the proof strength of 316L with good stress-corrosion-cracking resistance, used wherever 1.4404 is used.
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Chemical composition
mass %| Element | Content |
|---|---|
| CCarbon | ≤0.03 |
| SiSilicon | ≤1 |
| MnManganese | ≤2 |
| PPhosphorus | ≤0.035 |
| SSulphur | ≤0.015 |
| NNitrogen | 0.05–0.2 |
| CrChromium | 22–24 |
| MoMolybdenum | 0.1–0.6 |
| NiNickel | 3.5–5.5 |
| CuCopper | 0.1–0.6 |
Mechanical properties
room temperature- Rp0.2 min (N/mm²)
- 400
- Rm (N/mm²)
- 650–850
- Elongation A% (longitudinal)
- 20
- Impact energy KV J (longitudinal)
- 100
- Impact energy KV J (transverse)
- 60
Rp0.2 450 below 3 mm, 400 at/above 3 mm.
Standard equivalences
- DIN/EN
- X2CrNiN23-4
- AISI
- 2304 (lean duplex)
- UNS
- S32304
- UNS shown as not assigned on the source datasheet; S32304 is the recognised number for 2304.
Typical applications
- Energy
- Process industry
- Construction
- Food industry
Frequently asked questions
What is 1.4362 (Duplex 2304)?
1.4362 (X2CrNiN23-4) — Duplex (austenitic-ferritic). Lean duplex (2304) with a balanced austenite/ferrite structure — roughly double the proof strength of 316L with good stress-corrosion-cracking resistance, used wherever 1.4404 is used.
Which grades are equivalent to 1.4362?
1.4362 corresponds to EN X2CrNiN23-4; equivalent designations: AISI 2304 (lean duplex), UNS S32304.
Related grades
Indicative values — verify against the applicable standard before specifying.
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