CuNi19 Resistance Alloy
Introduction
CuNi19 resistance alloy is a type of copper nickel binary alloy with low temperature coefficient of resistance. This alloy is used for producing rheostat, shunt, controller and other low voltage electrical components. Its maximum operating temperature is 300°C. With good heat coefficient, this alloy is also widely used in low temperature heating cables of automobile heating cushion, railway snow melting and so on.
| 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 | 19 | 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 |
| 155 | 340 | 25 | 8.9 | 0.25 | ＜25 | 38 | ―32 | 17.5 | 0.380 | 1135 | 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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