BS ISO 18089:2015
Current
The latest, up-to-date edition.
Corrosion of metals and alloys. Determination of the critical crevice temperature (CCT) for stainless steels under potentiostatic control
Hardcopy , PDF
English
11-30-2015
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Equipment
6 Procedure
7 Assessment of results
8 Test report
Annex A (informative) - Examples of how the connections
of the electrode can be made
Annex B (normative) - Schematic representation of different
crevice formers used for CCT-measurements
Annex C (normative) - Calibration of specimen temperature
vs. solution temperature if a specimen holder is used
Annex D (informative) - Potential difference of selected
reference electrodes at 25 degrees C with respect to
the standard hydrogen electrode (SHE)
Bibliography
Explains the procedure for determining the critical crevice temperature (CCT) for stainless steels under potentiostatic control.
| Committee |
ISENFE/8
|
| DevelopmentNote |
Supersedes 14/30263834 DC. (11/2015)
|
| DocumentType |
Standard
|
| Pages |
24
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This International Standard describes the procedure for determining the critical crevice temperature (CCT) for stainless steels under potentiostatic control.
The principal advantage of the test is the rapidity with which the CCT can be measured in a single test procedure. The CCT, 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 crevice corrosion will occur in service.
This method is not intended for materials with critical pitting temperature (CPT) values below 20 °C measured in accordance with ISO17864, when measured in the same test solution and at the same potential
| Standards | Relationship |
| ISO 18089:2015 | Identical |
| ISO 17864:2005 | Corrosion of metals and alloys — Determination of the critical pitting temperature under potientiostatic control |
| ISO 8044:2015 | Corrosion of metals and alloys Basic terms and definitions |
| ASTM G 150 : 2013 | Standard Test Method for Electrochemical Critical Pitting Temperature Testing of Stainless Steels |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| ISO 18070:2015 | Corrosion of metals and alloys Crevice corrosion formers with disc springs for flat specimens or tubes made from stainless steel |
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