Strip – Incoloy Alloy 825

Strip – Incoloy Alloy 825

Incoloy® Alloy 825

UNS N08825
W.Nr 2.4858


Applications include chemical processing, pollution control, oil and gas recovery, acid production, pickling operations, nuclear fuel reprocessing and radioactive waste handling.


Incoloy® 825 is a Nickel-Iron-Chrome alloy with excellent resistance to sulfuric and phosphoric acids.  It is also resistant to oxidizing and reducing acids, stress corrosion cracking, pitting and intergranular corrosion.

Industries Supplied

Chemical and Petrochemical, Oil & Gas, Pollution Control and Nuclear

Nominal Composition

C: 0.05 max
Mn: 1.00 max
Si: 0.50 max
S: 0.030 max
Cr: 19.50 – 23.50
Ni: 38.0 – 46.0
Mo: 2.50 – 3.50
Ti: 0.60 – 1.20
Al: 0.20 max
Cu: 1.50 – 3.00
Fe: Balance

Physical Properties

Density: 0.294 lb/in3, (8.14 g/cm3)

Modulus of Elasticity (E):
At 70°F (20°C): 28.30 x 103 ksi (196 GPa)

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

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

Electrical Resistivity: 44.4 µΩ.in, (113 µΩ.cm)

Thermal Conductivity: 76.8 Btu-in/ft2hr-°F, (11.1 W/m-K)

Applicable Specifications

Strip:  ASTM B424, NACE MR0175

Typical Mechanical Properties

  • Annealed
    • Heat Treatment: 1832°F (1000°C)
    • Tensile Strength: 85 ksi (586 MPa) min
    • Suggested Operating Conditions: -300°F to 1600°F (-184°C to 871°C)

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

For further information Contact:

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

Limitation of Liability and Disclaimer of Warranty:

  • The content in these data sheets is provided primarily by third-party melting mills and is provided for reference only.  It is not intended for engineering or design.
  • Applications may be discussed, however, Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, does not recommend or endorse any material for any particular end use or application.
  • The data included in this data sheet are typical values and may vary.
  • Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, makes no representations or warranties, express or implied, as to the accuracy, completeness, condition, suitability, performance, fitness for a particular purpose, or merchantability of any information contained in any data sheet.

In no event will Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, be liable for any damages whatsoever arising from the use of the information included in the data sheets.