Corrosion rate as a function of aging time and temperature for alloy C-22 (UNS N06022). (a) Aged wrought alloy in boiling
sulfuric acid/ferric sulfate (ASTM G 28 Method A). (b) Gas tungsten arc welded (GTAW) alloy in boiling sulfuric acid/
ferric sulfate (ASTM G 28 Method A). (c) Aged wrought alloy in boiling 2.5% HCl. (d) GTAW alloy in boiling 2.5% HCl. Source: Ref 43