EN ISO 17864:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Specimens
7 Calibration of specimen temperature vs.
   solution temperature
8 Procedure
9 Assessment of results
10 Test report
Annex A (informative) - Guidelines for selecting the
                        test parameters
Annex B (informative) - Method of preventing a crevice
                        attack
Annex C (informative) - Potential difference of selected
                        reference electrodes at 25 Degree C
                        with respect to the standard hydrogen
                        electrode (SHE)

ISO 17864:2005 describes the procedure for determining the critical pitting temperature for stainless steels (austenitic, ferritic/austenitic, ferritic stainless steel) under potentiostatic control.The principal advantage of the test is the rapidity with which the critical pitting temperature can be measured in a single test.The critical pitting temperature, as determined in this International Standard, can be used as a relative index of performance, for example, to compare the relative performance of different grades of stainless steel. The test described in this International Standard is not intended to determine the temperature at which pitting will occur in service.