Hydrogen Uptake of Duplex 2205 at H2 Partial Pressures up to 100 bar

Activity: Talk or presentation Oral presentation



1 Oct 2019

Anton Trautmann - Speaker

Gregor Karl Mori - contributor

Wolfgang Siegl - contributor

Mathias Truschner - contributor

Josefine Pfeiffer - contributor

Marianne Kapp - contributor

Andreas Keplinger - contributor

Markus Oberndorfer - contributor

Stephan Bauer - contributor

Microbiological methanation is investigated in an underground natural gas reservoir. Since H2 is involved in the process, hydrogen embrittlement of steel must inevitably be considered. Therefore, a routine for testing has been developed and a unique autoclave test bench was designed to simulate field conditions. The 2205 duplex stainless steel (UNS S31803) was investigated. Constant load tests (CLTs) and immersion tests with subsequent hydrogen analyses were performed. The specimens were exposed to different partial pressures of H2 under both dry and wet conditions (with brine). Additionally, the influence of CO2 under wet conditions was covered. Tests were performed at two different temperatures (25 °C and 80 °C) and lasted for 30 days. In general, the duplex stainless steel shows a good resistance to hydrogen embrittlement, but significant differences to other steels in hydrogen uptake were measured.
1 Oct 2019

Event (Conference)

TitleESSC & DUPLEX 2019
LocationSchloss Schönbrunn
Degree of recognitionInternational event