Nickel-based alloys
2.4660 Alloy 20 NiCr20CuMo
Highly corrosion-resistant alloy, very resistant in chloride-bearing media to sulphuric, phosphoric and nitric acid.
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Chemical composition
mass %| Element | Content |
|---|---|
| CCarbon | ≤0.07 |
| SiSilicon | ≤1 |
| MnManganese | ≤2 |
| PPhosphorus | ≤0.025 |
| SSulphur | ≤0.015 |
| CrChromium | 19–21 |
| MoMolybdenum | 2–3 |
| NiNickel | 32–38 |
| NbNiobium | 8×C – 1.0 |
| CuCopper | 3–4 |
| FeIron | balance |
Mechanical properties
room temperature- Scaling temperature (°C)
- 500
Standard equivalences
- DIN/EN
- NiCr20CuMo
- AISI
- Alloy 20
- UNS
- N08020
Typical applications
- Chemical industry apparatus
- Phosphoric, sulphuric and hydrofluoric acid
- Heat exchangers
- Food industry
Frequently asked questions
What is 2.4660 (Alloy 20)?
2.4660 (NiCr20CuMo) — Nickel-based alloys. Highly corrosion-resistant alloy, very resistant in chloride-bearing media to sulphuric, phosphoric and nitric acid.
Which grades are equivalent to 2.4660?
2.4660 corresponds to EN NiCr20CuMo; equivalent designations: AISI Alloy 20, UNS N08020.
Related grades
Indicative values — verify against the applicable standard before specifying.
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