CuNi1 Resistance Alloy

Introduction
CuNi1 resistance alloy is a type of copper nickel binary alloy with low temperature coefficient of resistance and a maximum operating temperature of 200°C. This alloy is mainly used to produce low voltage circuit breaker, low temperature electric blanket, thermal cutout and other low voltage electrical devices.

Type of supply
Type Size
Round wire D=0.06mm~8mm
Flat wire W=0.4~40mm T=0.05~2.9mm
Strip W=8~200mm T=0.1~3.0mm
Foil W=6~120mm T=0.005~0.1mm
Rod Dia=8~100mm L=50~1000mm
Main chemical composition (%)
Nickel 1
Manganese -
Copper 99
Physical parameters
Yield strength (Mpa) Tensile strength (Mpa) Elongation (%) Density (g/cm3) Resistivity (20℃)
(Ω・mm2/m)
Resistance temperature coefficient (20℃~600℃) 10-5/℃ Conductivity (20℃)
(WmK)
Electromotive force against copper (μV/℃ ) (0~100℃) Expansion coefficient (20 ℃- 400℃) x10-6/K Specific heat capacity (20℃)
(J/g・K)

Melting point
(℃)
Max.operating temperature (℃) Magnetism
90 210 25 8.9 0.03 <100 145 -8 17.5 0.38 1085 200 Non magnetic
Corrosion resistance performance
Atmospheric corrosion resistance at 20℃ Corrosion resistance at maximum operating temperature
Air and other oxygen-containing gases Ammonia containing gas Sulfurous gas Sulfurous gas Carburization
(oxidizability) (reducibility)
Good Poor Poor Poor Poor Good

Index
alloy strip, resistance wire

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