# Incoloy 825

*N08825 · NS1402*

> Ni-Fe-Cr-Mo-Cu alloy with exceptional resistance to sulfuric and phosphoric acid corrosion.

Incoloy 825 is a nickel-iron-chromium alloy with additions of molybdenum, copper and titanium for exceptional corrosion resistance in reducing and oxidizing acids. It is the standard material for sulfuric acid coolers, phosphoric acid evaporators and chemical processing equipment handling mixed acid streams.

## Key features

- Outstanding sulfuric acid resistance
- Resistant to phosphoric acid
- Molybdenum + copper for pitting resistance
- Titanium stabilized for intergranular corrosion
- NACE sour service qualified

## Applications

- Sulfuric acid coolers
- Phosphoric acid evaporators
- Chemical reactor vessels
- Pickling tank heating coils
- Offshore production piping

## Standards

- ASTM B163
- ASTM B423
- ASTM B424
- NACE MR0175