Does acid damage copper?

Can acid damage copper? What you need to know

Copper is valued for its durability and distinct reddish-brown look, but it isn't invincible. If you are cleaning or working around the metal, you need to know how it reacts to harsh chemicals.

The short answer is yes, acid can severely damage copper. Hydrochloric acid (HCl) is particularly harsh on the metal. Because of its chloride ions, it can cause rapid pitting and permanent metal loss almost on contact.

Even so, hydrochloric acid is occasionally used in extreme situations to clear out heavy scale buildup. If it is ever used for this purpose, it must be heavily diluted, combined with specialized corrosion inhibitors, and kept on the surface for the shortest contact time possible to avoid ruining the metal.