Journal
CORROSION SCIENCE
Volume 142, Issue -, Pages 56-65Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2018.07.003
Keywords
Critical pitting temperature; H2S; Duplex stainless steel; Austenitic stainless steel
Funding
- Alfa Laval
- Aperam
- Arcelor Mittal - Industeel
- Arcelor Mittal - Bourg en Bresse
- NV Bekaert SA
- Bolder Edelstahl
- National Oilwell Varco
- Outokumpu
- Sandvik Material Technology
- TechnipFMC - FlexiFrance
- Tenaris
- Total
- Vallourec
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The study aimed at developing a test method allowing to evaluate the critical pitting temperature of corrosion resistant alloys in H2S containing environments. ASTM G150 method is indeed not appropriate in sour environment due to the oxidation of H2S at high applied potential and to the decrease of H2S partial pressure as the temperature increases. The study underlines that critical pitting temperature measurement is possible in H2S-containing environments but that the determined temperature is probably not potential independent. The methodology can however be used to rank different alloys provided the selection of a test media representative from service conditions.
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