VTT Webinar

Watch the webinar: Tackling the material challenges in hydrogen economy

In this webinar we will discuss about the hydrogen related material challenges and how to ensure safety and avoid costly failures in hydrogen based industrial processes.

Hydrogen gas is a highly flammable material and utilizing it requires a deep understanding of materials and their performance. In addition to safety, it is crucial to consider how changes in processes may affect the durability, reliability and maintainability of infrastructure, machinery, and equipment.

Watch the webinar recording to hear VTT scientists' insights about hydrogen related material challenges and how VTT ProperScan can help you make right choices and avoid material failures resulting in costly down-time.


  • Water Electrolysis for Green H2 Production – Technical Challenges, Materials and  Research Activities at VTT -- Ville Saarinen,  Senior Scientist, D.Sc. (Tech.) ​
  • Integrity of pressure vessels and pipes for H2 transportation and storage -- Sebastian Lindqvist, Senior Scientist, D.Sc. (Tech.)
  • Material challenges related to the use of hydrogen and ammonia as fuel -- Elina Huttunen-Saarivirta, Research Professor, D.Sc. (Materials Science)
  • Q&A


Any specific EU directives issued solely to Hydrogen applications or plans for it? 

At the moment not solely for hydrogen but hydrogen is included and dealt in various directives e.g. in Pressure Equipment Directive (PED) and Renewable Energy Directive to which Commission proposed two new green hydrogen acts in Feb 2023. But there is a need for EU hydrogen standardisation and in March 2023 the European Clean Hydrogen Alliance published a Roadmap on Hydrogen Standardization.

What are the EU standards defining the minimum requirements for material selection for hydrogen storage and pipe transportation or instrumentation?

There is a lack of suitable standards and new European hydrogen standards, norms, guidelines are needed for hydrogen storage and transport. Now the ASME B31.12 (and API 5L) are widely used for materials certification for hydrogen pipelines. European Industrial Gases Association (EIGA) has also given recommendation for hydrogen transportation pipelines (IGC Doc 121/04/E) and hydrogen cylinders and transport vessels (IGC Doc 100/03/E).

Why is VTT investigating solid oxide technology and what are still the biggest obstacles for its commercialization?

Solid Oxide Electrolysis (SOEC) has interesting advantages such as the highest efficiency, ability to use low cost raw materials in solid oxide cells and stacks as well as reversibility. The same system can work both as a fuel cell and an electrolyser depending on power generation and grid stabilisation needs. On the other hand, the competing technologies (Alkaline electrolysis (AEL) and Proton exchange membrane electrolysis (PEMEL)) are currently at a more mature stage. Two main development areas for solid oxide technology is to increase the life-time and decrease the manufacturing costs in comparison to AEL and PEMEL technologies.

Is VTT able to test different materials in different conditions (specified by us) and provide recommendation on the best choice for our specific application?

Yes, we can provide you with experimental testing portfolio customized to your specific needs. Taking into account both planned operation conditions and use model as well as any foreseeable changes/variation.

Is solid oxide efficiency takes into account energy needed for heating everything to 600C?

Yes, heating to the required operation temperature is taken into account in calculating the system efficiency.

A bit specific question, but what could be a good candidate material for 20-30 % KOH + H2? Let´s say for example for piping, temperatures relatively low.

To provide a recommendation on the best candidate material(s), we would need to understand in more detail the key parameters related to the process and operating conditions, planned usage profile including any foreseeable changes/risks as well as any boundary conditions you might have. We would then design and run appropriate experimental test plan providing required data for analysis and conclusions to generate a recommendation.

Can you share references from work done within this field?

VTT has been working on material performance topics for decades and we have built exceptionally broad knowledge on both the material aging and failure mechanisms as well as the various industrial processes. Most of our customer work is confidential but we can discuss and share some public references in more detail based on your specific interests.

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Mika Malkamäki
Mika Malkamäki
Solution Sales Lead