Inconel® alloy 800

UNS N08800
W.Nr 1.4876


Applications include furnace components and equipment, petrochemical furnace cracker tubes, pigtails and headers, sheathes for electrical heating elements, stream generator tubing and domestic appliances.


Incoloy® Alloy 800 is used for its corrosion resistance, heat resistance, strength and stability at high temperatures.  It offers general corrosion resistance to many aqueous media and resists stress corrosion cracking.  At elevated temperatures it resists oxidation, carburization and sulfidation along with maintaining good rupture and creep strength.

Industries Supplied

Chemical, Thermal, Food Processing and Nuclear

Nominal Composition

C: 0.10 max
Mn: 1.50 max
Si: 1.00 max
P: 0.035 max
S: 0.015 max
Cr: 19.0 - 23.0 
Ni: 30.0 - 35.0 
Ti: 0.15 - 0.60
Al: 0.15 - 0.60
Cu: 0.75 max 
Fe: Balance

Physical Properties

Density: 0.287 lb/in3, (7.94 g/cm3)

Modulus of Elasticity (E): 
At 70°F (20°C): 28.50 x 103 ksi (197 GPa)

Modulus of Rigidity (G)
At 70°F (20°C):  11 x 103 ksi (76 GPa)

Coefficient of Expansion:
9.4 µin/in.-°F (70°F to 1000°F)
16.8 µm/m-°C (20°C to 538°C)

Electrical Resistivity: 38.9 µΩ.in, (98.9 µΩ.cm)

Thermal Conductivity: 80 Btu-in/ft2hr-°F, (11.5 W/m-K)

Applicable Specifications

Strip: AMS 5871, ASTM A240, ASTM B409

Typical Mechanical Properties

  • Annealed
    • Heat Treatment: 1900°F (1036°C)
    • Tensile Strength: 75 ksi (520 MPa) min
    • Suggested Operating Conditions: -300°F to 1500°F (-184°C to 816°C)

  • INCOLOY® is a registered trademark of the Special Metals Corporation group of companies.

    For further information Contact:

    Phone: 1 888 843 2350 
    Elgiloy Specialty Metals - Strip Products
    1565 Fleetwood Dr.
    Elgin, IL 60123 USA