# Hastelloy C22

*N06022*

> Ni-Cr-Mo-W alloy with superior oxidizing media resistance and better weldability than C-276.

Hastelloy C22 is a nickel-chromium-molybdenum-tungsten alloy offering superior resistance to oxidizing media and exceptional weldability. It is the upgraded alternative to C-276 in applications requiring resistance to both oxidizing and reducing environments, particularly in flue gas desulfurization (FGD) systems and pharmaceutical processing.

## Key features

- Superior oxidizing media resistance
- Better weldability than C-276
- Resists pitting and crevice corrosion
- ASME pressure vessel approved
- Excellent in mixed acid environments

## Applications

- Flue gas desulfurization (FGD) scrubbers
- Pharmaceutical processing equipment
- Chemical reactor vessels
- Pulp and paper bleach plants
- Waste treatment systems

## Standards

- ASME Section VIII
- ASTM B574
- ASTM B575
- NACE MR0175