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CuNi23 Resistance Alloy
Introduction
CuNi23 resistance alloy is one of copper nickel binary alloys, having low temperature coefficient of resistance. It is applied to make rheostat, shunt, controller and other low voltage electrical components with a maximum operating temperature of 300°C. Due to its good heat coefficient, this alloy is widely used in low temperature heating cable of automobile heating cushion, railway snow melting, etc.
| Type | Size | ||
| Round wire | D=0.06mm~8mm | ||
| Flat wire | W=0.4~40mm | T=0.05~2.9mm | |
| Strip | W=8~200mm | T=0.1~3.0mm | |
| Foil | W=6~120mm | T=0.005~0.1mm | |
| Rod | Dia=8~100mm | L=50~1000mm | |
| Nickel | 23 | Manganese | 0.5 |
| Copper | Balance |
| Yield strength (Mpa) | Tensile strength (Mpa) | Elongation (%) | Density (g/cm3) | Resistivity (20℃) (Ω・mm2/m) | Resistance temperature coefficient (20℃~600℃) 10-5/℃ | Conductivity (20℃) (WmK) | Electromotive force against copper (μV/℃ ) (0~100℃) | Expansion coefficient (20 ℃- 400℃) x10-6/K | Specific heat capacity (20℃) (J/g・K) | Melting point (℃) | Max.operating temperature (℃) | Magnetism |
| 170 | 350 | 25 | 8.9 | 0.30 | ＜16 | 33 | -34 | 17.5 | 0.380 | 1150 | 300 | Non magnetic |
| Atmospheric corrosion resistance at 20℃ | Corrosion resistance at maximum operating temperature | ||||
| Air and other oxygen-containing gases | Ammonia containing gas | Sulfurous gas | Sulfurous gas | Carburization | |
| (oxidizability) | (reducibility) | ||||
| Good | Common | Common | Common | Poor | Good |
Index
alloy strip, resistance wire
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