The hydrogen economy makes an important contribution to the industrial transformation towards climate neutrality. Against this background, the influence of hydrogen on the mechanical properties of materials must be evaluated for a large number of scenarios. Therefore, such tests need to be simple, efficient and widely available.

Despite this need, there is no easily applicable and standardized method to efficiently determine the influence of gaseous hydrogen on metallic materials, and the few available standards describe complex and costly procedures that are only available to a very limited extent worldwide.

The hollow specimen approach of the H2HohlZug research project has the potential to fulfill these requirements. It requires only a fraction of the amount of hydrogen compared to the existing autoclave method and thus significantly reduces the costs related to safety issues.

The "H2HohlZug" project, which is part of the German TransHyDE flagship project, aims to evaluate various process parameters such as geometric considerations, surface quality, gas purity and other factors and gives recommendations for a standardized test procedure. This poster provides an overview of the project and the method and presents preliminary results concerning the field of gas purity.