CuNi30Mn1Fe
CW354H70/30 copper-nickel alloy — the premium marine cupronickel. Higher Ni than 90/10 (CuNi10Fe1Mn) for superior seawater corrosion resistance, especially in polluted or high-velocity water (up to 4.5 m/s). Used for condenser tubes, desalination plant tubing, propeller sleeves, seawater piping, and heat exchangers in naval and offshore service.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | UNS | USA | UNS C71500 | C71500 | REF |
| 🇪🇺 | EN | Europe | CuNi30Mn1Fe | CW354H | 100% |
| 🇬🇧 | BS | United Kingdom | CN107 | — | 95% |
Sources: ASTM B171, EN 12163, BS 2871
Mechanical properties — Pro
Annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation | ||
| Elastic Modulus | ||
| Density |
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