CuNi2 Resistance Alloy
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Introduction
CuNi2 resistance alloy is a kind of copper nickel binary alloy. It has low temperature coefficient of resistance and its maximum operating temperature is 250°C. This alloy is mainly used for manufacturing low voltage circuit breaker, low temperature electric blanket, thermal cutout and other low voltage electrical devices. And it is also used to manufacture heating cable for home electric blanket.
| 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 | 2 | Manganese | - |
| 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 |
| 90 | 220 | 25 | 8.9 | 0.05 | ＜120 | 130 | -12 | 17.5 | 0.38 | 109 | 200 | 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 | Poor | Poor | Poor | Poor | Good |
Index
alloy strip, resistance wire
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