The corrosion of a material is dependant upon its composition and applied thermal procedure as well as other factors (shreir, 1976; Uhlig, 1971; Grafen et al. 1978). The effect of applied thermal procedure upon the corrosion of Fe alloys which consisted variying amo- unts of Cr in the medium of İN H2SO4by using various electrochemical techniques was investigated before (Aksüt, 1983). The composition of the steels investigated are tabulated in table 1.