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Constantan® - Resistance Alloy ( Cu55/Ni45 )

Material Information

Buy Constantan® - Resistance Alloy on-line

We stock and supply the following standard forms:
Foil Insulated Wire Rod Sputtering Target Wire
Foil Insulated Wire Rod Sputtering Target Wire

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Common Brand Names:
Ferry®, Hecnum®, Telconstan®, Constantan®
 
General Description:  

Resistance alloy 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 manganins. Uses tend to be restricted to ac circuits. Constantan 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.

   

Electrical Properties

Electrical resistivity ( µOhmcm ) 52.0
Temperature coefficient ( K-1 ) +/-0.00002

Mechanical Properties

Elongation at break ( % ) <45
Hardness - Brinell 100-300
Izod impact strength ( J m-1 ) 107
Modulus of elasticity ( GPa ) 162
Tensile strength ( MPa ) 400-590

Physical Properties

Density ( g cm-3 ) 8.9
Melting point ( C ) 1225-1300

Thermal Properties

Coefficient of thermal expansion @20-100C ( x10-6 K-1 ) 14.9
Maximum use temperature in air ( C ) 500
Thermal conductivity @23C ( W m-1 K-1 ) 19.5

Buy Constantan® - Resistance Alloy on-line

We stock and supply the following standard forms:
Foil Insulated Wire Rod Sputtering Target Wire
Foil Insulated Wire Rod Sputtering Target Wire

Choose a form to search our on-line catalogue  

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