williamhenry wrote:
if you wanted to spray something on 180 degree thin aluminum that
would eat holes in the said aluminum ,what would do it the fastest?
other than mercury sulfate, thanks

&

thin aluminum at 180 degrees farenheit, sorry

In that case, you don't want to use muriatic acid (HCl). The fumes
given off by the acid vaporizing on the hot aluminum would be REALLY
REALLY terrible. I've heated it to 150F and it's not something that
I'll do again.

Bob