Technical Data Sheet
Alloy 825 is a nickel-iron-chromium alloy with additions of molybdenum and copper. It offers excellent resistance to reducing and oxidizing acids, stress corrosion cracking, and localized corrosion such as pitting and crevice corrosion. Alloy 825 is particularly resistant to sulfuric and phosphoric acids. Alloy 825 is used in chemical processing, pollution control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production and pickling equipment, and radioactive waste disposal.
Chemical Composition Limits
Weight %
Ni
Fe
Cr
Mo
Cu
Ti
C
Mn
S
Si
Al
Alloy 825
38 - 46
22 min
19.5 - 23.5
2.5 - 3.5
1.5 - 3
0.6 - 1.2
0.05 max
1 max
0.03 max
0.5 max
0.2 max
Typical Mechanical Properties
Material
Form and Condition
Tensile Strength MPa
Yield Strength (0.2% Offset) MPa
Elongation (%)
Alloy 825 Tube
Annealed
772
441
36
Alloy 825 Tube
Cold Drawn
1000
889
15
Alloy 825 Bar
Annealed
690
324
45
Alloy 825 Plate
Annealed
662
338
45
Alloy 8…