CuNi 30 / CuNi 44 Resistance Wire /Nickel Alloy 30/Cuprothal 30 Resistance Wire
Product Description
The copper-based low resistance heating alloy is widely used in low-voltage circuit breaker, thermal overload relay, and other low-voltage electrical product. It is one of the key materials of the low-voltage electrical products. The materials produced by our company have the characteristics of good resistance consistency and superior stability. We can supply all kinds of round wire, flat and sheet materials.
CuNi30 low resistance heating alloy is widely used in low-voltage circuit breaker, thermal overload relay, and other low-voltage electrical product. It is one of the key materials of the low-voltage electrical products. The materials produced by our company have the characteristics of good resistance consistency and superior stability. We can supply all kinds of round wire, flat and sheet materials.
The alloy is non-magnetic. It is used for electrical regenerator's variable resistor and the strain resistor,
potentiometers, heating wires, heating cables and mats. Ribbons are used for heating of bimetals. Another field of application is manufacturing of thermocouples because it develops a high electromotive force (EMF) in association with others metals.
Copper nickel alloy Series:Constantan CuNi40 (6J40), CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23,CuNi30, CuNi34, CuNi44.
Size dimension range
Wire: 0.1-10mm
Ribbons: 0.05*0.2-2.0*6.0mm
Strip: 0.05*5.0-5.0*250mm
Main grades and properties
Type | Electrical resistivity (20degreeΩ mm²/m) | temperature coefficient of resistance (10^6/degree) | Dens ity g/mm² | Max. temperature (°c) | Melting point (°c) |
CuNi1 | 0.03 | <1000 | 8.9 | / | 1085 |
CuNi2 | 0.05 | <1200 | 8.9 | 200 | 1090 |
CuNi6 | 0.10 | <600 | 8.9 | 220 | 1095 |
CuNi8 | 0.12 | <570 | 8.9 | 250 | 1097 |
CuNi10 | 0.15 | <500 | 8.9 | 250 | 1100 |
CuNi14 | 0.20 | <380 | 8.9 | 300 | 1115 |
CuNi19 | 0.25 | <250 | 8.9 | 300 | 1135 |
CuNi23 | 0.30 | <160 | 8.9 | 300 | 1150 |
CuNi30 | 0.35 | <100 | 8.9 | 350 | 1170 |
CuNi34 | 0.40 | -0 | 8.9 | 350 | 1180 |
CuNi40 | 0.48 | ±40 | 8.9 | 400 | 1280 |
CuNi44 | 0.49 | <-6 | 8.9 | 400 | 1280 |

Alloy | DN-Trade Name | Material-No. | UNS-No. | ASTM Specification | DIN Specification |
CuNi1 | CuNi1 | | | | |
CuNi2 | CuNi2 | 2.0802 | C70200 | ASTM B267 | DIN 17471 |
CuNi6 | CuNi6 | 2.0807 | C70500 | ASTM B267 | DIN 17471 |
CuNi10 | CuNi10 | 2.0811 | C70700 | ASTM B267 | DIN 17471 |
CuNi10Fe1Mn | CuNi10Fe1Mn | (2.0872) / (CW352H) | C70600 | ASTM B151 | |
CuNi15 | CuNi15 | | | | |
CuNi23Mn | CuNi23Mn | 2.0881 | C71100 | ASTM B267 | DIN 17471 |
CuNi30Mn | CuNi30Mn | 2.0890 | | | |
CuNi30Mn1Fe | CuNi30Mn1Fe | (2.0882) / (CW354H) | C71500 | ASTM B151 | |
CuNi44Mn1 | Vernicon | 2.0842 | | | DIN 17471 |
294:Common Name:
Alloy294, Cuprothal294, Nico, MWS-294, Cupron, Copel, Alloy45, Cu-Ni102, Cu-Ni44, Cuprothal, Cupron, Copel, Neutrology, Advance, Konstantan
A30:Common Name:
Alloy 30, MWS-30, Cuprothal 5, Cu-Ni 23, Alloy 260, Cuprothal 30 HAI-30, Cu-Ni2, Alloy 230, Nickel Alloy 30
A90: Common Name:
Alloy 95, 90 Alloy, MWS-90, Cu-Ni 10, Cuprothal 15, Cu-Ni 10, Alloy 320 Alloy 90, Alloy 290, #95 Alloy, Cuprothal 90,HAI-90,Alloy 260,Nickel Alloy 90
A180: Common Name:
Alloy 180, 180 Alloy, MWS-180, Cuprothal 30, Midohm, Cu-Ni 23, Nickel Alloy 180



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