CuNi 90/10
CuNi 90/10 is a copper-nickel alloy with excellent resistance to seawater and biofouling – the classic for shipbuilding and seawater piping.
Application & properties
CuNi 90/10 is a copper-nickel alloy with excellent resistance to seawater and biofouling – the classic for shipbuilding and seawater piping.
- Seawater and shipbuilding piping
- Heat exchangers and condensers
- Cooling-water systems near the sea
Chemical composition
Typical values in wt.-% per EN standard (heat analysis).
| Element | Content (%) |
|---|---|
| Cu | Bal. |
| Ni | 9.0–11.0 |
| Fe | 1.0–2.0 |
| Mn | 0.5–1.0 |
| Pb | ≤ 0.02 |
Mechanical properties
Typical values at room temperature per EN standard.
| Property | Value |
|---|---|
| Yield strength Rp0.2 | ≥ 90–120 MPa |
| Tensile strength Rm | ≥ 290 MPa |
| Elongation A | ≥ 30 % |
Standards, equivalents & product forms
| Topic | Detail |
|---|---|
| Standards | EN 12449 / EN 12451 |
| ASME/ASTM equivalent | ~ UNS C70600 |
| Material no. | 2.0872 |
| Short name / aka | CuNi10Fe1Mn · CW352H |
We supply CuNi 90/10 as pipes, flanges and fittings – seamless or welded, on request with an EN 10204 3.1 / 3.2 mill certificate.
Frequently asked questions about CuNi 90/10
Why CuNi 90/10 for seawater?
Copper-nickel forms a stable protective layer, is highly seawater-resistant and also prevents biofouling.
Where is CuNi 90/10 used?
Above all in shipbuilding and seawater cooling circuits as well as in heat exchangers.
Request CuNi 90/10?
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.