International Hydrogen Conference (IHC 2016): Materials Performance in Hydrogen Environments
Research on Fatigue of Cr-Mo Steel for Hydrogen Storage Vessels
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A pre-normative project, “Material testing and recommendations for hydrogen components under fatigue, MATHRYCE” under the EU joint research program dealt with hydrogen enhanced fatigue in Q&T (YS=600MPa) low alloy Cr-Mo steel and pressure vessel design. The project was concluded by cyclic testing of pre-notched vessels by hydraulic and hydrogen pressure loading. This paper display part of the fatigue tests performed under hydrogen pressure, including fatigue crack initiation analysis from 0.5MPa H2 to 103MPa H2. Notable differences, but explainable correlations between results of various test types were found. Some implications to possible improvements of hydrogen pressure vessels design standards are also presented.