CuNi resistance alloy wire has lower electrical resistance, good echanical, excellent welding and anti-corrosion properties. It is used to make the key components in the thermal overload relay, low resistance thermal circuit breaker, and the electrical appliances. It is also an important material for electrical heating cable.
Our productions
1.Pure Nickel
2.Nickel chrome wire Strip Bar includes: Cr25Ni20,Cr20Ni35,Cr15Ni60,Cr20Ni80.Cr30Ni70
3.Copper Nickel wire Strip includes:CuNi1,CuNi2,CuNi6,CuNi8,CuNi10,CuNi14,CuNi19,CuNi23,CuNi30,CuNi34,CuNi44.CuMn3
4.Constantan wire includes: 6J40.
5.Manganin wire:6J8,6J12,6J13
6.Thermocouple wire:Type K,E,J,T,N
7.Thermocouple compensating&extension wire:KX,NX,EX,JX,TX,KCA,KCB,SC/RC,WRENC
Main Advantage and Application
It widely used in sulfide environment and producing industrial electric furnace, household electrical appliance and far infrared ray device.Low price with high electric resistance, low temperature cofficient of resistance, high working temperature and good corrosion resistance under high temperature especially.
Copper nickel alloy
| Main property | | Cuni1 | CuNI2 | CuNI6 | CuNI10 | CuNi19 | CuNi23 | CuNi30 | CuNi34 | CuNI44 |
Main chemical
composition
| Ni | 1 | 2 | 6 | 10 | 19 | 23 | 30 | 34 | 44 |
| MN | / | / | / | / | 0.5 | 0.5 | 1.0 | 1.0 | 1.0 |
| CU | rest | rest | rest | rest | rest | rest | rest | rest | rest |
| max working Temperature °c | / | 200 | 220 | 250 | 300 | 300 | 350 | 350 | 400 |
| Density g/cm3 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 |
| Resistivity at 20 °c | 0.03
± 10% | 0.05
±10% | 0.1
±10% | 0.15
±10% | 0.25
±5% | 0.3
±5% | 0.35
±5% | 0.40
±5% | 0.49
±5% |
| Temperature coefficient of Resistance | <100 | <120 | <60 | <50 | <25 | <16 | <10 | -0 | <-6 |
| Tensile strength Mpa | >210 | >220 | >250 | >290 | >340 | >350 | >400 | >400 | >420 |
| elongation | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 |
| Melting point °c | 1085 | 1090 | 1095 | 1100 | 1135 | 1150 | 1170 | 1180 | 1280 |
| coefficient of conductivity | 145 | 130 | 92 | 59 | 38 | 33 | 27 | 25 | 23 |
Mechanical Properties
| Max Continuous Service Temp | 200ºC |
| Resisivity at 20ºC | 0.05±10%ohm mm2/m |
| Density | 8.9 g/cm3 |
| Thermal Conductivity | <120 |
| Melting Point | 1090ºC |
| Tensile Strength,N/mm2 Annealed,Soft | 140~310 Mpa |
| Tensile Strength,N/mm2 Cold Rolled | 280~620 Mpa |
| Elongation(anneal) | 25%(min) |
| Elongation(cold rolled) | 2%(min) |
| EMF vs Cu, μV/ºC (0~100ºC) | -12 |
| Micrographic Structure | austenite |
| Magnetic Property | Non |
