[en] Susceptibility to pitting corrosion of Incoloy 800 in 0.1M sodium chloride solution, at room temperature, was studied as a function of pH. In order to determine the pitting potentials (E_p), potentiokinetic and galvanostatic techniques were applied. The results obtained by both techniques indicate that there is no noticeable change of E_p values in the 3 to 11 pH range, and that E_p increases at pH 12. E_p values obtained by the galvanostatic method were lower than those measured using the potentiokinetic technique. The number and size of pits decreases as the pH increases. The morphology of pitting belongs to the crystallographic type. (Author)