Hydrogen Embrittlement of low-alloyed Steels and Corrosion Resistant Alloys in high-pressure H2 gas and H2S saturated solution

Activity: Talk or presentation Oral presentation



7 Sep 2020

Anton Trautmann - Speaker

Gregor Karl Mori - contributor

Mathias Truschner - contributor

Josefine Pfeiffer - contributor

Wolfgang Siegl - contributor

Andreas Keplinger - contributor

Marianne Kapp - contributor

Markus Oberndorfer - contributor

Stephan Bauer - contributor

The carbon steels L80, P110 (both according to API 5CT) and 42CrMo4 (UNS G41400) as well as the corrosion resistant alloys (CRAs) Super 13Cr, Duplex 2205 and Alloy 28 were tested with regard to hydrogen embrittlement under the conditions prevailing in an underground natural gas reservoir used for microbiological methanation. Constant load tests (CLTs) and immersion tests in rotating autoclaves were performed. After the tests, the hydrogen content of the immersion specimens was measured. Atmospheres with different partial pressures of H2 gas with and without brine were used. The experiments were carried out for a duration of 30 days at 25 and 80 °C. Specimens were also immersed in an acidified H2S saturated aqueous brine solution (NACE TM0177 Solution A) and the Hydrogen uptake was measured after 3 hours, 30 hours and 336 hours of loading.
Significant differences between H2 and H2S containing media were found in the behavior under constant load as well as hydrogen uptake of the specimens. A comparison of the results indicates that steel grades suitable for sour service are also suitable for service in atmospheres containing up to 100 bar H2.
7 Sep 2020

Event (Conference)

TitleEurocorr 2020
Web address (URL)
Degree of recognitionInternational event