1.1 This test method covers a laboratory procedure forconducting an electrochemical reactivation (EPR) test on AISIType 304 and 304L (UNS No. S30400 and S30403, respec-tively) stainless steels. This test method can provide a nonde-structive means of quantifying the degree of sensitization inthese steels (1 , 2, 3). 2 This test method has found wideacceptance in studies of the effects of sensitization on inter-granular corrosion and intergranular stress corrosion crackingbehavior (see Terminology G15). The EPR technique has beensuccessfully used to evaluate other stainless steels and nickelbase alloys (4), but the test conditions and evaluation criteriaused were modified in each case from those cited in this testmethod.
