Incoloy® 800 Tube

Incoloy® 800 Tube is a nickel–iron–chromium alloy recognized for its exceptional strength and metallurgical stability under long-term high-temperature service. It resists oxidation, carburization, and chloride stress corrosion cracking, ensuring structural integrity in aggressive thermal and chemical environments. These tubes are widely applied in power generation, petrochemical, and chemical processing industries, where they are critical for heat exchangers, boiler tubing, and steam generator systems. Specific applications include superheater tubes in fossil fuel plants and tubing for reformers in petrochemical units, where resistance to prolonged thermal cycling is essential. Research has leveraged Incoloy® 800 Tubes for understanding microstructural changes after extended service and for developing advanced techniques like EBSD characterization to ensure long-term reliability. By combining thermal strength with corrosion resistance, Incoloy® 800 Tube plays a pivotal role in advancing both industrial performance and scientific understanding of high-temperature alloys.

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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
Hardness - Brinell	180-250
Elongation at break( % )	<45
Modulus of elasticity( GPa )	196
Izod impact strength( J m⁻¹ )	160
Tensile strength( MPa )	400-900

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	20
Temperature coefficient( K⁻¹ )	-

Thermal Properties

Element	Value
Melting point( C )	1350-1420
Specific heat( J K⁻¹ kg⁻¹ )	460@23°C
Thermal conductivity( W m⁻¹ K⁻¹ )	11.5-12.9@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	14.2-15.8@20-100°C