Nickel/Chromium Alloy Tube (Ni80/Cr20)

Nickel Chromium Alloy Tube (Ni80/Cr20) provides outstanding corrosion resistance, high-temperature stability, and mechanical integrity, making it ideal for transporting gases or liquids under extreme thermal conditions. The alloy’s 80–20 composition ensures excellent resistance to oxidation and scaling, even in open-air high-temperature service. It finds use in heat exchangers, furnace gas delivery systems, and high-performance process piping in aerospace, chemical, and power generation industries. Specific technologies benefiting include tubular heating elements, high-temperature reaction gas feeds, and protective conduits for thermocouples in corrosive atmospheres. In research, its stable surface chemistry and strength retention under prolonged heat exposure make it invaluable for developing advanced thermal process equipment. Its combination of durability, resistivity, and formability ensures continued relevance in both industrial production and laboratory-scale systems.

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Tolerance

Properties

Reference & Citations

Health hazard/Hazardous to the ozone layer

Serious health hazard

each

Tolerances

Tube

Outside Diameter	=<2mm	±0.05mm
Outside Diameter	2mm - 5mm	±0.1mm
Outside Diameter	>5mm	±5%
Wall Thickness		±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