Constantan TC

Constantan for Thermocouple, Extension and Compensating Wires.

Material can be ordered to all National or International emf standards as well as customer’s own specifications. Scott Precision Wire Constantan alloys are available in solid wire, strip or tape and flexible bunch or strand constructions.

The alloy composition is carefully controlled to provide a range of emf outputs to suit the following thermocouple combinations:

Thermocouple TypeConstantan AlloyRangeTemp.Constantan Description
JConJ0 - 750°CTo form the negative leg of the thermocouple or extension wire combination. Matched to Thermocouple Iron
ConJX0 - 200°C
TConT0 - 350°CTo form the negative leg of the thermocouple or extension wire combination. Matched to Thermocouple Copper
ConTX0 - 100°C
EConE0 - 900°CTo form the negative leg of the thermocouple or extension wire combination. Matched to Nicro
ConEX0 - 200°C
K (KC) CompensatingConKCA0 - 150°CTo form the negative leg of the compensating wire combination. Matched to Thermocouple Copper
ConKCB0 - 100°C

Physical and Mechanical Properties

UnitsConstantan
Nominal composition%Cu 56
Ni 44
Density at 20°Cg/cm³8.9
Resistivity at 20°CµΩcm49
Temperature Coefficient of Resistance1/K0.00004
Coefficient of thermal expansion 20 – 100°C1/K13.5 x 10^6
Thermal conductivity at 20°CW/mK23
Specific Heat Capacity at 20°CkJ/kgK0.41
Melting point (approx.)°C1280
Magnetic propertiesNon-Magnetic
Tensile strength Rm(0.5mm annealed wire)N/mm²420

The figures given in these tables represent nominal or typical values.

Information contained within this technical data sheet is based upon the general experience of Scott Precision Wire Ltd and is believed to be correct at the time of issue.

No warranty is given or is to be implied from the details above.

Customers are advised to carry out independent tests in order to determine the suitability of any Scott Precision Wire Ltd product for an application.