Cuni is a highly versatile type of resistance alloy that is composed primarily of copper and nickel. One of the key benefits of this alloy is its low temperature coefficient of resistance (TCR), which means that it is able to maintain a consistent level of electrical resistance over a wide range of operating temperatures. This makes it an ideal choice for use in a variety of electrical applications where reliable performance is essential.
In addition to its excellent electrical properties, Cuni also boasts impressive mechanical characteristics. It has a low electric resistance, making it an efficient conductor of electricity. It is also highly resistant to both heat and corrosion, which helps to ensure that it will continue to perform reliably even in harsh environments.
Another advantage of Cuni is that it is easy to process and lead welded, making it a popular choice for use in the manufacture of various electrical components. It is commonly used to make key components in thermal overload relays, low resistance thermal circuit breakers, and other types of electrical appliances. Additionally, it is an important material for electrical heating cables, which are used to provide heat in a variety of industrial and commercial settings.
Overall, Cuni is an incredibly versatile and reliable type of resistance alloy that is well-suited for use in a wide range of electrical applications. Its unique combination of electrical and mechanical properties make it an ideal choice for anyone looking for a high-quality, dependable material that can stand up to even the toughest conditions.
| Type | Electrical resistivity
(20degreeΩ
mm²/m) | Max. temperature
(°c) | Tensil strength | Melting point
(°c) | Density(g/m3) | TCRx10-6/°c(20-600°c) | EMF VS Cu |
| CuNi1 | 0.03 | 200 | 210 | 1085 | 8.9 | ＜100 | -8 |
| CuNi2 | 0.05 | 200 | 220 | 1090 | 8.9 | ＜120 | -12 |
| CuNi6 | 0.10 | 220 | 250 | 1095 | 8.9 | ＜60 | -18 |
| CuNi8 | 0.12 | 250 | 270 | 1097 | 8.9 | ＜57 | -22 |
| CuNi10 | 0.15 | 250 | 290 | 1100 | 8.9 | ＜50 | -25 |
| CuNi14 | 0.20 | 300 | 310 | 1115 | 8.9 | ＜30 | -28 |
| CuNi19 | 0.25 | 300 | 340 | 1135 | 8.9 | ＜25 | -32 |
| CuNi23 | 0.30 | 300 | 350 | 1150 | 8.9 | ＜16 | -34 |
| CuNi30 | 0.35 | 350 | 400 | 1170 | 8.9 | ＜10 | -37 |
| CuNi34 | 0.40 | 350 | 400 | 1180 | 8.9 | ＜0 | -39 |
| CuNi44 | 0.50 | 400 | 420 | 1200 | 8.9 | ＜-6 | -43 |
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CuNi2/CuNi6/CuNi8/CuNi10 Copper Nickel CuNi Alloy Electric Heating Wire With Low Resistance Images
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