Inconel 625 round head bolt for Jet engine exhaust systems
The results reveal that Inconel 625 is excellent in resist the corrosion attack in seawater. However, at increasing temperature, the corrosion resistance of this metal decrease.
Alloy 625 can be used as an internal overlay for valve bodies, bonnets, and internals in carbon steel or low alloy steel to prevent different types of corrosion, such as carbon dioxide, hydrogen sulfide, and pitting. The performance is same in seawater with high sulphate content at increasing temperature. It can be concluded that sulphate promote perforation on Inconel 625 and become aggressive agents that accelerate the corrosion attack.