Alloy 825

2.4858  /  UNS N08825

A nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localized attack such as pitting and crevice corrosion. The alloy is especially resistant to sulfuric and phosphoric acids. Used for chemical processing, pollution-control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production, and pickling equipment.

Stock program

Bars

  • 8.0 mm
  • 10.0 mm
  • 12.0 mm
  • 16.0 mm
  • 20.0 mm
  • 25.0 mm
  • 30.0 mm
  • 35.0 mm
  • 40.0 mm
  • 45.0 mm
  • 50.0 mm
  • 60.0 mm
  • 70.0 mm

Sheets

  • 0.4 mm
  • 0.5 mm
  • 0.6 mm
  • 0.7 mm
  • 0.8 mm
  • 0.9 mm
  • 1.0 mm
  • 1.2 mm
  • 1.27 mm
  • 1.5 mm
  • 1.6 mm
  • 2.0 mm
  • 3.0 mm*
  •  

*  also hot rolled 

Tubes / Pipes

outside diameter x wall thickness

  • 21.34 mm
  • x
  • 2.11 mm
  • 26.67 mm
  • x
  • 2.87 mm
  • 33.40 mm
  • x
  • 3.38 mm
  • 48.26 mm
  • x
  • 3.68 mm
  • 60.32 mm
  • x
  • 3.91 mm
  • 88.90 mm
  • x
  • 5.49 mm

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Chemical Analysis
Ni   38.00 - 46.00 %
Cr   19.50 - 23.50 %
Fe min. 22.00 %
Mo   2.50 - 3.50 %
Cu   1.50 - 3.00 %
Ti   0.60 - 1.20 %
Mn max. 1.00 %
Si max. 0.50 %
Al max. 0.20 %
C max. 0.05 %
S max. 0.03 %
Density
g/cm³   8.14
lb/in³   0.294
Recommended Welding Products
Electrode INCONEL 112
  INCO WELD 686CPT
Filler Metall INCONEL 625
  INCO WELD 686CPT