LIMITATIONS OF THE SLOW STRAIN RATE TEST FOR STRESS-CORROSION CRACKING TESTING

A survey of the literature and experts in the field was performed on slow strain rate (SSR) testing methods for the Materials Technology Institute of the Chemical Process Industries, Inc. The goal of the survey was to determine if SSR testing methods yield useful data in predicting stress corrosion cracking susceptibility of metals used in the chemical process industry. it was concluded from the summary that most reported cases of anomalous behavior with the SSR test technique can be attributed to inadequate control or measurement of strain rate or potential, which are the major controlling parameters for a specific material/environment combination. Based on this and other conclusions, several recommendations were made regarding carrying out SSR tests.