Incoloy 825
Incoloy 825 is a nickel-iron-chromium-molybdenum alloy with good corrosion resistance to sulfuric acid, phosphoric acid and seawater. Similar to Alloy 800, but with improved resistance to water-based corrosion. Although not fully resistant to stress-corrosion cracking in boiling magnesium chloride, Alloy 825 has good resistance to neutral chloride media.
Type Analysis
Description
Incoloy 825 is a nickel-iron-chromium-molybdenum alloy with good corrosion resistance to sulfuric acid, phosphoric acid and seawater. Similar to Alloy 800, but with improved resistance to water-based corrosion. Although not fully resistant to stress-corrosion cracking in boiling magnesium chloride, Alloy 825 has good resistance to neutral chloride media.
Applications
Typical applications are phosphoric acid evaporators, pickling tank heaters, pickling hooks and equipment, chemical process equipment, tank trucks, propeller shafts and spent nuclear fuel element recovery.
Weldability
Incoloy 825 can be easily welded by shielded metal-arc process with alloy welding electrode 135, gas shielded arc process with alloy filler metal 65, and resistance welding process.
The alloy does not require heat treatment after welding.
The corrosion resistance of the weld metal deposited from the covered electrode and bare wire is the same as the base material.
