The titanium-stabilized Incoloy 825 nickel-based alloy is a full austenitic nickel-iron alloy with the addition of copper and the rare metal molybdenum. Incoloy 825 nickel-based alloys are resistant to strong acids and bases in oxidizing and reducing environments.

Compared with ordinary austenite, nickel in nickel-based alloys can make them resistant to chloride stress corrosion, molybdenum and copper can make them have strong corrosion resistance in reducing environments.

Chromium and molybdenum components are resistant to chloride pitting and corrosion in various oxidizing environments. Nickel can be added to make the material more stable and less susceptible to sensitization during welding. This non-sensitizing property enables the material to resist intergranular corrosion even when exposed to the sensitizing temperature range. Incoloy 825 nickel-based alloys have excellent corrosion resistance to a variety of processing environments, including sulfuric acid, sulfite, phosphoric acid, nitric acid, hydrofluoric acid, organic acids and bases such as sodium, potassium hydroxide, and acyl chloride.