In the literature there are only limited results available on the corrosion resistance of nickel alloys and
special stainless steels in acids at high temperature, in particular above the boiling point. Therefore, a
recent laboratory testing program was started to obtain corrosion data on the 6 % Mo stainless steel
alloy 31 (UNS N08031), and the nickel alloys 59 (UNS N06059) and B-2 (UNS N10665) in formic acid,
acetic acid, phosphoric acid and p-toluene sulfonic acid.