cupro nickel constantan / Konstantan / CuNi44 / CuNi 45 / CuNi 40
alloy strip for circuit breaker
Chemical Content, %
Ni | Mn | Fe | Si | Cu | Other | ROHS Directive |
Cd | Pb | Hg | Cr |
44 | 1% | - | - | Bal | - | ND | ND | ND | ND |
Mechanical Properties
Max Continuous Service Temp | 400℃ |
Resisivity at 20℃ | 0.49±5%ohm mm2/m |
Density | 8.9 g/cm3 |
Thermal Conductivity | -6(Max) |
Melting Point | 1280℃ |
Tensile Strength,N/mm2 Annealed,Soft | 340~535 Mpa |
Tensile Strength,N/mm2 Cold Rolled | 680~1070 Mpa |
Elongation(anneal) | 25%(Min) |
Elongation(cold rolled) | ≥Min) |
Copper Nickel CuNi44 foil / strip
cuni 44 foil: CuNi resistance Alloy ,Very good resistance to corrosion ,Very good
malleability,Very good solder ability
copper nickel alloy cuni 44 foil
CuNi alloy grade: Constantan, CuNi1, CuNi2, CuNi6, CuNi8, CuNi10,
CuNi14, CuNi19, CuNi23, CuMu12Ni, CuNi34, CuNi40 (6J40), CuNi44.
Copper nickel alloy sizes:
Wire: 0.018-10mm Ribbons: 0.05*0.2-2.0*6.0mm , Strip:
0.005*5.0-5.0*250mm ,Bars: OD 4-100mm
Our CuNi alloy are in the form of wire, ribbon, coil, strip, foil
etc.
Characteristics:
1)Manufactured according to international quality. System (ISO9001)
2)Stable resistance and long-life span
3)Mill test certificate will be provided after production
4)Size range wire:.0.018-10mm ribbons: 0.05-0.2*2-6mm strips:
0.005-2.5*1-300mm
5)Good packing methods to keep goods no damage during delivery
6)Customized lable, packing, OEM service
7)24 hours after-sale service
Applications
It could be used to make electric heating element in low-voltage
apparatus, such as thermal overload relay, low-voltage circuit
breaker, and so on.
Mechanical 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 |
