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C70200 CuNi2.2

C70200 CuNi2.2
C70200 CuNi2.2
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Product Code : C70200
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Product Description

C70200 CuNi2.2

The copper nickel alloy is the low resistivity alloy used at temperature range up to 300°C (570°F). The alloy is mainly used in heating cables in electric pillows and blankets. The medium resistivity and low temperature coefficient of resistance also make these alloys ideal for control resistors and thermocouples.

Chemical Composition:


Ni %

Cu %

Nominal composition

2.2

Bal.

Mechanical properties:

Wire size

Yield strength

Tensile strength

Elongation

Ø

Rp0.2

Rm

A

Mm

MPa

MPa

%

1

100

240

30


Physical Properties:

Density g/cm3

8.9

Electrical resistivity at 20°C O mm2/m

0.05


Temperature factor of resistivity:

Temperature°C

20

100

200

300

Ct

1

1.11

1.25

1.4


Coefficient of thermal expansion:

Temperature°C

Thermal Expansion x10-6/K

20 - 100

16.5


Thermal conductivity:

Temperature°C

20

W m-1 K-1

130


Specific Heat Capacity:

Temperature°C

20

kJ kg-1 K-1

0.38

Melting point °C

1090

Max continuous operating temperature in air °C

300

Magnetic properties

The material is non-magnetic



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