Nickel/Chromium Alloy Coil (Ni80/Cr20)

Nickel Chromium Alloy Coil (Ni80/Cr20) combines high electrical resistivity, excellent oxidation resistance, and mechanical stability at elevated temperatures. The 80–20 Ni–Cr composition makes it particularly suited to continuous operation in high-heat environments without significant degradation. This alloy is extensively used in heating elements, thermal processing equipment, and resistance wires across industrial, laboratory, and manufacturing sectors. Specific technologies benefiting include coiled resistance heaters in furnaces, thermal sealing systems in packaging machinery, and industrial dryers for controlled heat distribution. In research, its consistent resistive properties under cyclic heating make it ideal for developing precision thermal control systems and testing thermal fatigue resistance. The alloy’s reliability, long service life, and process versatility cement its role as a cornerstone in both industrial heating and experimental thermal engineering.

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Tolerance

Properties

Reference & Citations

Health hazard/Hazardous to the ozone layer

Serious health hazard

each

Tolerances

Coil

Thickness	<0.01mm	±25%
Thickness	0.01mm - 0.05mm	±15%
Thickness	>0.05mm	±10%

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