Austenitic stainless
1.4529 Alloy 926 X1NiCrMoCuN25-20-7
6%-molybdenum super-austenitic with very high resistance to pitting and crevice corrosion in chloride media.
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Chemical composition
mass %| Element | Content |
|---|---|
| CCarbon | ≤0.02 |
| SiSilicon | ≤0.5 |
| MnManganese | ≤1 |
| PPhosphorus | ≤0.03 |
| SSulphur | ≤0.01 |
| NNitrogen | 0.15–0.25 |
| CrChromium | 19–21 |
| CuCopper | 0.5–1.5 |
| MoMolybdenum | 6–7 |
| NiNickel | 24–26 |
Mechanical properties
room temperature- Rp0.2 min (N/mm²)
- 270
- Rp1.0 min (N/mm²)
- 310
- Rm (N/mm²)
- 600–800
- Elongation A% (longitudinal)
- 35
- Elongation A% (transverse)
- 30
- Impact energy KV J (longitudinal)
- 100
- Impact energy KV J (transverse)
- 60
Seamless tube.
Standard equivalences
- DIN/EN
- X1NiCrMoCuN25-20-7
- AISI
- Alloy 926 (6Mo)
- UNS
- S31254
Typical applications
- Offshore applications
- Flue-gas desulphurisation
- Fertiliser industry and seawater desalination
- Sulphuric- and phosphoric-acid production
- Pulp and paper industry
Frequently asked questions
What is 1.4529 (Alloy 926)?
1.4529 (X1NiCrMoCuN25-20-7) — Austenitic stainless. 6%-molybdenum super-austenitic with very high resistance to pitting and crevice corrosion in chloride media.
Which grades are equivalent to 1.4529?
1.4529 corresponds to EN X1NiCrMoCuN25-20-7; equivalent designations: AISI Alloy 926 (6Mo), UNS S31254.
Related grades
Indicative values — verify against the applicable standard before specifying.
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