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CuNi8 Resistance Alloy
Introduction
CuNi8 resistance alloy is one of copper nickel binary alloys having low temperature coefficient of resistance and a maximum operating temperature of 250°C. It is mainly used for producing low voltage circuit breaker, low temperature electric blanket, thermal cutout and other low voltage electrical components. This alloy is also used to make 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 | 8 | 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 |
| 140 | 270 | 25 | 8.9 | 0.12 | ＜57 | 75 | ―22 | 17.5 | 0.380 | 1092 | 250 | 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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