Nickel-Copper Alloy 400 – UNS N04400 – shows high strength and excellent corrosion resistance in a range of acidic and alkaline environments and especially suitable for reducing conditions. It also has good ductility and thermal conductivity. al brass tubes
| UNS No. | N04400 – BSI No. BS3074NA13 |
| Chemical Comp. (%) | Ni 63 min / Cu 28 ~ 34 / Fe 2.5 max / Mn 2.0 max / C 0.3 max / Si 0.5 max / S 0.024 max |
| ASTM Spec. | B163, B165, B828 |
| ASME Spec. | SB163, SB165, SB828 |
| Applications | Marine engineering, chemical and hydro-carbon processings, heat exchangers and alkylation units. |
| Temper | Annealed / Stress Relieved |
Nickel-Copper Alloy 400 – UNS N04400
| Properties * | Metric | English |
| Density | 8.80 g/cc | 0.318 lb/in³ |
| Tensile Strength – Annealed min. | 483 MPa | 70 ksi |
| Tensile Strength – Stress Relieved min. | 586 MPa | 85 ksi |
| Yield Strength – Annealed min. | 193 MPa | 28 ksi |
| Yield Strength – Stress Relieved min. | 379 MPa | 55 ksi |
| CTE, linear | 14.2 μm/m•°C @ 100°C | 7.7 in/in/°F x 10-6 @ 200°F |
| Specific Heat Capacity | 445 J/kg•°C @ 100ºC | 0.105 Btu/lb/°F @ 200ºF |
| Thermal Conductivity | 24.0 W/m•°C @ 100°C | 167 Btu-in/h/ft2/°F @ 200°F |
| Melting Point | 1300 – 1350 °C | 2370 – 2460 °F |
