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CuNi2
Common Name: (CuNi2,NC5)
CuNi2 is a copper-nickel alloy (Cu2Ni98 alloy) with low resistivity for use at temperatures up to 200°C.
CuNi2 is typically used for low-temperature applications such as heating cables in electric blankets and pillows.
Normal composition%
Nickel
2
Manganese
-
Copper
Bal.
Typical Mechanical properties(1.0mm)
Yield strength
Tensile Strength
Elongation
Mpa
Mpa
%
90
220
25
Typical Physical properties
Density (g/cm3)
8.9
Electrical resistivity at 20℃ (Ωmm2/m)
0.05
Temperature factor of resistivity(20℃~600℃)X10-5/℃
<120
Conductivity coefficient at 20℃ (WmK)
130
EMF vs Cu(μV/℃ )(0~100℃ )
-12
Coefficient of thermal expansion
Temperature
Thermal Expansion x10-6/K
20 ℃- 400℃
17.5
Specific heat capacity
Temperature
20℃
J/gK
0.380
Melting point (℃)
109
Max continuous operating temperature in air (℃)
200
Magnetic properties
non-magnetic
Corrosion resistance performance
Alloys
Working In atmosphere at 20℃
Working at max temperature 200℃
Air and oxygen contain
gases
gases with Nitrogen
gases with sulfur
oxidability
gases with sulfur
reductibility
carburization
CuNi2
good
bad
bad
bad
bad
good
Style of supply
Alloys Name
Type
Dimension
CuNi2W
Wire
D=0.06mm~8mm
CuNi2R
Ribbon
W=0.4~40
T=0.05~2.9mm
CuNi2S
Strip
W=8~200mm
T=0.1~3.0
CuNi2F
Foil
W=6~120mm
T=0.005~0.1
CuNi2B
Bar
Dia=8~100mm
L=50~1000
Copper Nickel Alloy CuNi2