Copper Nickel Alloy Heating Resistance Wire

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The copper nickel alloy heating resistance wire provides low electrical resistance, great weldability, workability, and high anti-corrosion properties. It is ideally suited for making key components in thermal overload relay, low voltage circuit breaker, and household appliance. In addition, it is an indispensable material for underfloor heating cable.

The copper-based heating resistance alloy wire is also usually found in the metallurgy, chemical, glass, ceramics, electronics, and other machinery manufacturing industries for making heating furnace, far-infrared heating device, ignition electrode, motor voltage regulator, stainless steel welding material, starting or braking resistor for various motor vehicles, etc.


Product Properties
Type CuNi1
NC003
CuNi2
NC005
CuNi6
NC010
CuNi8
NC012
CuMn3
MC012
CuNi10
NC015
CuNi14
NC020
CuNi19
NC025
CuNi23
NC030
CuN30
NC035
CuNi34
NC040
CuNi44
NC050
Composition (%) Cu Rest Rest Rest Rest Rest Rest Rest Rest Rest Rest Rest Rest
Mn -- -- -- -- 3 -- 0.3 0.5 0.5 1.0 1.0 1.0
Ni 1 2 6 8
10 14.2 19 23 30 34 44
Max. continuous
operating temperature ℃
200 200 220 250 200 250 300 300 300 350 350 400
Nominal value μΩ.m (20℃) 0.03±
10%
0.05±
10%
0.1±
10%
0.12±
10%
0.12±
10%
0.15±
10%
0.2±
5%
0.25±
5%
0.3±
5%
0.35±
5%
0.4±
5% 
0.49±
5%
Resistance-temperature coefficient
α×10ˉ5/℃ (20-600℃)
<100 <120 <60  <57 <38 <50 <38 <25 <16  <10 -0 <-6
Thermal electromotive force (EMF) against
copper at 20℃ μV/K
-8  -12 -18 -22 1 -25 -28 -32 -34  -37 -39  -43
Mean coefficient of linear thermal expansion, in 10ˉ6/k, at a temperature between 20℃ and 400℃ 17.5 17.5 17.5 17.5 18 17.5 17.5 17.5 17.5 17.0 16.0 15.0
Thermal conductance at 20℃ W/mK 145 130 92 75 84 59 48 38 33 27 25 23
Specific heat capacity at 20℃ J/gK 0.38 0.38 0.38 0.38 0.39 0.38 0.38 0.38 0.38 0.39 0.40 0.41
Density at 20℃ g/cm3 8.9 8.9 8.9 8.9 8.8 8.9 8.9 8.9 8.9 8.9 8.9 8.9
Melting temperature ℃ 1085 1090 1095 1097 1050 1100 1115 1135 1150 1170 1180 1280
Min. tensile strength N/mm² 210 220 250 270 290 290 310 340 350 400 400 420
Elongation % 25 25 25 25 25 25 25 25 25 25 25 25

Resistance/Meter Value Table
Tolerance of ohm/m: +5%
Dia.(mm) NC005 CuNi2 NC010 CuNi6 NC015 CuNi10 NC020 CuNi14 NC025 CuNi19 NC030 CuNi23 NC035 CuNi30
0.10 6.36 12.73 19.10 25.46 31.83 38.20 44.56
0.11 5.26 10.52 15.78 21.05 26.31 31.57 36.83
0.12 4.42 8.84 13.26 17.68 22.10 26.53 30.95
0.13 3.76 7.53 11.30 15.07 18.83 22.60 26.37
0.14 3.24 6.50 9.74 12.99 16.24 19.49 22.74
0.15 2.82 5.66 8.49 11.32 14.15 16.98 19.81
0.16 2.48 4.97 7.46 9.95 12.43 14.92 17.41
0.17 2.20 4.41 6.61 8.81 11.01 13.22 15.42
0.18 1.96 3.93 5.89 7.86 9.82 11.79 13.75
0.19 1.76 3.53 5.29 7.05 8.82 10.58 12.34
0.20 1.59 3.18 4.77 6.37 7.96 9.55 11.14
0.21 1.44 2.89 4.33 5.77 7.22 8.66 10.11
0.22 1.31 2.63 3.95 5.26 6.58 7.89 9.21
0.23 1.20 2.41 3.61 4.81 6.02 7.22 8.42
0.24 1.10 2.21 3.32 4.42 5.53 6.63 7.74
0.25 1.01 2.04 3.06 4.07 5.09 6.11 7.13
0.26 0.94 1.88 2.83 3.77 4.71 5.65 6.59
0.27 0.87 1.75 2.62 3.49 4.37 5.24 6.11
0.28 0.81 1.62 2.44 3.25 4.06 4.87 5.68
0.29 0.75 1.51 2.27 3.03 3.78 4.54 5.30
0.30 0.70 1.41 2.12 2.83 3.54 4.24 4.95
0.31 0.66 1.32 1.99 2.65 3.31 3.97 4.64
0.32 0.62 1.24 1.87 2.49 3.11 3.73 4.35
0.33 0.58 1.17 1.75 2.34 2.92 3.51 4.09
0.34 0.55 1.10 1.65 2.20 2.75 3.30 3.85
0.35 0.51 1.04 1.56 2.08 2.60 3.12 3.64

Dia .(mm) NC005 CuNi2 NC010 CuNi6 NC015 CuNi10 NC020 CuNi14 NC025 CuNi19 NC030 CuNi23 NC035 CuNi30
0.36 0.49 0.98 1.47 1.96 2.46 2.95 3.44
0.37 0.47 0.93 1.40 1.86 2.33 2.79 3.26
0.38 0.44 0.88 1.32 1.76 2.20 2.65 3.09
0.40 0.40 0.80 1.19 1.59 1.99 2.39 2.79
0.41 0.38 0.76 1.14 1.51 1.89 2.27 2.65
0.42 0.36 0.72 1.08 1.44 1.80 2.17 2.53
0.43 0.34 0.69 1.03 1.38 1.72 2.07 2.41
0.44 0.33 0.66 0.99 1.32 1.64 1.97 2.30
0.45 0.31 0.63 0.94 1.26 1.57 1.89 2.20
0.46 0.30 0.60 0.90 1.20 1.50 1.81 2.11
0.47 0.29 0.58 0.86 1.15 1.44 1.73 2.02
0.48 0.28 0.55 0.83 1.11 1.38 1.66 1.93
0.49 0.27 0.53 0.80 1.06 1.33 1.59 1.86
0.50 0.25 0.51 0.76 1.02 1.27 1.53 1.78
0.51 0.24 0.49 0.73 0.98 1.22 1.47 1.71
0.52 0.24 0.47 0.71 0.94 1.18 1.41 1.65
0.53 0.23 0.45 0.68 0.91 1.13 1.36 1.59
0.54 0.22 0.44 0.65 0.87 1.09 1.31 1.53
0.55 0.21 0.42 0.63 0.84 1.05 1.26 1.47
0.56 0.20 0.41 0.61 0.81 1.02 1.22 1.42
0.57 0.20 0.39 0.59 0.78 0.98 1.18 1.37
0.58 0.19 0.38 0.57 0.76 0.95 1.14 1.32
0.59 0.18 0.37 0.55 0.73 0.91 1.10 1.28
0.60 0.18 0.35 0.53 0.71 0.88 1.06 1.24

As an experienced copper nickel alloy heating resistance wire manufacturer and supplier in China, Senphus offers a comprehensive range of products, including PVC heating wire, underfloor heating cable, anti-freeze pipe heating cable, and more.

Related Names:
Electrical Resistance Wire | Cupronickel Wire | Copper Nickel Wire | Cu-ni Wire | Copper Nickel Alloy

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