ASTM: B 425
Alloy 825 is a nickel-iron-chromium alloy for use in extremely corrosive environments. The nickel content of
this alloy makes it resistant to chloride-ion stress-corrosion cracking. Additions of molybdenum and copper
give alloy 825 resistance to pitting and to corrosion in reducing acid environments such as sulphuric or
phosphoric acid solutions.
The alloys chromium content gives it resistance to various oxidizing environments, such as nitrates, nitric acid
solutions and oxidizing salts. The many corrosion-resistant properties of Alloy 825 make the alloy a suitable
choice for a variety of difficult applications.