Hydrofluoric Acid Corrosion

Few compounds are more corrosive than hydrofluoric acid – and Monel fasteners is one of the few can survive hydrofluoric acid (HF). Hydrofluoric acid is a unique anomaly when it comes to corrosiveness – it will even eat through solid tantalum, yet Monel can withstand all concentrations of hydrofluoric acid, even up to the boiling point. In hydrofluoric acid, Monel is the leader in protection along with some of the fluorpolymers. It is recommended that Monel 400 is even suitable when fully immersed. Keep in mind aeration or the presence of oxidizing salts will increase the corrosion rate.

 

 

Monel vs. Nickel Alloy Hydrofluoric Acid Corosion Performance 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Monel Hydrofluoric Acid Performance