# Inconel 690

*N06690 · NS3105*

> High-chromium Ni-Cr-Fe alloy for nuclear steam generator tubing with superior SCC resistance.

Inconel 690 is a high-chromium nickel alloy developed specifically for nuclear steam generator tubing. The 30% chromium content provides exceptional resistance to stress-corrosion cracking in high-temperature water, making it the industry standard for PWR nuclear reactor steam generators.

## Key features

- Best-in-class SCC resistance
- 30% Cr for nuclear water chemistry
- PWR steam generator standard
- Resistant to caustic environments
- ASME nuclear qualified

## Applications

- Nuclear steam generator tubing
- Nuclear waste vitrification
- Chemical processing equipment
- Coal gasification systems
- Incinerator components

## Standards

- ASTM B166
- ASTM B167
- ASTM B168
- ASME N-Stamp