Incoloy® 800 UNS N08800

Incoloy 800 posesses the ultimate in chemical properties for high-temperature strength and resistance to oxidation, carburization and other types of high-temperature corrosion. It is a widely used material for applications requiring corrosion resistance, heat resistance, strength, and stability for service up to 1500°F (816°C).
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(Nickel 800) Strip, Coil, Foil, and Wire, AMS 5766, AMS 5871, AMS 5876, AMS 5877, ASTM B 408, ASTM B409

Applications of Incoloy 800

  • Muffles
  • Radiant tubes
  • Heat Treat Trays
  • Cracker Tubes
  • Manifolds
  • Food processing
  • Furnace equipment parts


lncoloy® 800 is a nickel-iron-chromium alloy designed with good strength and to resist oxidation and carburization at elevated temperatures.The high nickel content (30% Min.) makes the alloy highly resistant both to chloride stress-corrosion cracking and to embrittlement from precipitation of sigma phase. The general corrosion resistance is excellent.

Chemistry Typical

Nickel: 30.00-35.00
Chromium: 19.00-23.00
Iron: 39.50 min
Carbon: 0.10 max
Manganese: 1.50 max
Sulfur: 0.015 max
Silicon: 1.00 max
Copper: 0.75 max
Aluminum: 0.15-0.60
Titanium: 0.15-0.60
Phosphorus: 0.035 max

Physical Properties of Nickel 800

Density: 0.27 lbs/in3, 7.94.g/cm3

Specific Heat, Btu/lb•° F, J/kg•°C:
32 - 212 °F (0 - 100 °C): 0.11 (460)

Mean Coefficient of Thermal Expansion: in/inl° F (mm/ml°C)
70 - 212 ° F (20 - 100 °C)- 7.9 x 10-s (14.2)

Thermal Conductivity: BTU/h-ft-° F (W/m-° K):
70 ° F (21 °C): 6.7 (11.6)

Modulus of Elasticity: ksi (MPa)
28.5 x 103 (196.5 x 103) in tension

Permeability at 70 ° F (21 °C) H = 200 Oersted :

Annealed : 1.014

Melting Point: 2525 ° F (1385 °C)


Coil - Strip, Foil, Ribbon Wire - Profile, Round, Flat, Square

Mechanical Properties of Incoloy 800 at Room Temperature

Properties: Annealed

Ultimate Tensile Strength: 75 KSI min (420 MPa min)
Yield Strength (0.2% offset): 30 KSI (gauges ≥ 0.020 inches)
Elongation: 30% min
Hardness: Rb 84 nom


lncoloy® 800 can be cold rolled to various tempers. Contact Ulbrich Technical Service for additional information.

Additional Properties

Incoloy 800 Corrosion Resistance

Refer to NACE (National Associate of Corrosion Engineers) for recommendations.

Incoloy 800 Finishes

#1 - Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.
#2D - Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process. #2B - Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D. #BA- Bright annealed cold rolled and bright annealed
#CBA- Course bright annealed cold rolled matte finish and bright anneal
#2 - Cold Rolled
#2BA- Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish. A 2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part. Polished - Various grit finish for specific polish finished requirements.
* Not all finishes are available in all alloys - Contact Ulbrich Sales for more information.

Incoloy 800 Wire Finishes

XC - Extra Clean Bright Annealed or Bright Annealed and Cold Rolled Grease - Ultra bright finish (for decorative applications) Soap - Soap coating on tempered wire to act as lubricant. * Contact Ulbrich Wire for custom wire finishes.

Heat Treatment of Incoloy 800

lncoloy® 800 cannot be hardened heat treating.

Welding Incoloy 800

For best results refer to: SSINA's "Welding of Stainless Steels and Other Joining Methods".

Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels & Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the 'applications' noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this document.

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