Polyimide-Insulated T2 Thermocouple Wire (Ni95/(Al+Mn+Si)5)

Polyimide-Insulated T2 Thermocouple Wire (Ni95/(Al+Mn+Si)5) merges the stable thermoelectric characteristics of type T thermocouple alloy with the heat resistance, dielectric strength, and chemical stability of polyimide insulation. It performs reliably in cryogenic to moderate high-temperature ranges, making it valuable for aerospace environmental testing, food processing control, and laboratory research instrumentation. Applications include embedded temperature sensors in refrigerated systems, monitoring in pharmaceutical freeze-drying processes, and precision thermal mapping in environmental chambers. In research, it supports thermoelectric calibration experiments, long-term drift analysis, and insulation stability studies under repeated thermal cycling. The combination of measurement accuracy, alloy resilience, and polyimide protection ensures dependable performance across a broad temperature spectrum.

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Tolerance

Properties

Reference & Citations

Health hazard/Hazardous to the ozone layer

Serious health hazard

each

Tolerances

Insulated Wire

Conductor Diameter		±10%
Insulation Thickness		Nominal
Length		+5% / -1%

Material Properties for Alloys

Magnetic Properties

Element	Value
Maximum permeability	1.07

Mechanical Properties

Element	Value
Elongation at break( % )	<44
Modulus of elasticity( GPa )	220
Izod impact strength( J m⁻¹ )	108
Tensile strength( MPa )	550-780

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	29-33
Temperature coefficient( K⁻¹ )	0.0019

Thermal Properties

Element	Value
Maximum use temperature in air( C )	1100
Melting point( C )	1315-1390
Specific heat( J K⁻¹ kg⁻¹ )	446@23°C
Thermal conductivity( W m⁻¹ K⁻¹ )	30-32@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	16.8@20-1000°C