Resistance Rheostat CuNi6 CuNi8 CuNi10 CuNi14 Wire Long Useful Life
Specifications:
1. Brief introduce of constantan (CuNi40/6J40) wire :
Constantan is a type of resistance alloy, which is made up of copper and
nickel as the main components.It has a low temperature coefficient
of resistance (TCR), and a wide operating temperature range (below
500°C). It has good properities on mechanical working, high
resistance of corrosion. It is used for variable and strain
resistance of corrosion. It is used for variable and strain
resisitance elements in alternative instruments.
Constantan wire is CuNi40(6J40) wire Ni:39-41 Mn:1-2 Cu:rest
We can supply type of : wire,ribbon,strip, furnance spring wire
We can supply Size: Wire: 0.018mm-10mm
Ribbon: 0.05*0.2mm-2.0*6.0mm
Strip: 0.5*5.0mm-5.0*250mm
furnance spring wire according to customers requirement
2.Feature of constantan (CuNi40/6J40) wire
(1) High resistance
(2) Low temperature coefficient of resistance
(3) High working temperature
(4) Good corrosion resistance especailly under high temperature
(5) Good performance of anti-carburizing, the atmosphere and
surface of sulfur pollution.
(6) Long useful life
3. Advantages and application of constantan (CuNi40/6J40) wire
(1) Good corrosion resistance at high temperature.
(2) It can be widely used in industrial furnacess, household
appliances and far-infrared devices.
CuNi series:
| Type | Electrical
Resistivity
(20℃Ωmm²/m) | Temperature
Coefficient of Resistance(10-6/℃) | Density(g/m³) | Max.
Temperature(℃) | Metlting
Point(℃) |
| 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 |
| Alloys Name | Type | Dimension |
| OhmAlloy10W | Wire | D=0.06mm~8mm |
| OhmAlloy10R | Ribbon | W=0.4~40 | T=0.05~2.9mm |
| OhmAlloy10S | Strip | W=8~200mm | T=0.1~3.0 |
| OhmAlloy10F | Foil | W=6~120mm | T=0.005~0.1 |
| OhmAlloy10B | Bar | Dia=8~100mm | L=50~1000 |
