CuNi40 Constantan Low resistance alloy ribbon Constantan Flat wire

Model NO.
CuNi40
Sample Free
Available
Serves
Small Oreder Accepted
Transport Package
Coil Cartons, Pallet, Spools, Coils
Specification
ROHS, SGS
Trademark
TANKII
Origin
China
HS Code
7409400000
Production Capacity
200 Tons/Year
Reference Price
$ 19.80 - 22.50
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Product Description

CuNi40 Constantan Low resistance alloy ribbon Constantan Flat wire

Product Description
      Constantan Wire with moderate resistivity and low temperature coefficent of resistance with a flat resistance/temperature curve over a wider range than the "manganins". Constantan also shows better corrosion resistance than the man ganins. Uses tend to be restricted to ac circuits.
     Constantan wire is also the negative element of the type J thermocouple with Iron being the positive; type J thermocouples are used in heat treating applications. Also, it is the negative element of the type T thermocouple with OFHC Copper the positive; type T thermocouples are used at cryogenic temperatures.
 
Chemical Content, %

Ni
Mn
Fe
Si
Cu
Other
ROHS Directive

Cd
Pb
Hg
Cr

40
1.50%
0.5
-
Bal
-
ND
ND
ND
ND
 

Mechanical Properties

Max Continuous Service Temp
400ºC

Resisivity at 20ºC
0.48±5%ohm mm2/m

Density
8.9 g/cm3

Thermal Conductivity
-6(Max)

Melting Point
1280ºC

Tensile Strength,N/mm2   Annealed,Soft
340~535 Mpa

Tensile Strength,N/mm3   Cold Rolled
680~1070 Mpa

Elongation(anneal)
25%(Min)

Elongation(cold rolled)
≥Min)2%(Min)

EMF vs Cu, μV/ºC (0~100ºC)
-43

Micrographic Structure
austenite

Magnetic Property
Non
 

CuNi40 Constantan Low resistance alloy ribbon Constantan Flat wire
CuNi40 Constantan Low resistance alloy ribbon Constantan Flat wire
CuNi40 Constantan Low resistance alloy ribbon Constantan Flat wire
CuNi40 Constantan Low resistance alloy ribbon Constantan Flat wire



 

 

Alloy