Epoxy-Insulated Nickel/Chromium Alloy Wire (Ni80/Cr20)

Epoxy-Insulated Nickel/Chromium Alloy Wire (Ni80/Cr20) combines the high electrical resistivity, oxidation resistance, and thermal stability of the Ni80/Cr20 alloy with a durable epoxy coating for enhanced dielectric performance and environmental protection. The Ni80/Cr20 core offers stable resistive properties over a wide temperature range, excellent corrosion resistance, and high mechanical strength at elevated temperatures, making it ideal for use in harsh environments. The epoxy insulation adds abrasion resistance, moisture sealing, and electrical isolation, enabling reliable performance in aerospace, industrial heating, and precision instrumentation applications. Specific uses include resistance heating elements in compact devices, insulated conductors in high-temperature sensors, and mechanically robust wiring in industrial furnaces. In research and advanced manufacturing, Epoxy-Insulated Ni80/Cr20 Wire is valued for its ability to deliver precise, stable electrical performance while withstanding thermal cycling and corrosive atmospheres.

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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

Mechanical Properties

Element	Value
Elongation at break( % )	40
Tensile strength( MPa )	650-1100

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	108
Temperature coefficient( K⁻¹ )	0.00005

Thermal Properties

Element	Value
Maximum use temperature in air( C )	1150-1250
Melting point( C )	1400
Thermal conductivity( W m⁻¹ K⁻¹ )	13.4@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	14@20-100°C