What material is best for high-pressure containers used to store hydrogen?
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What material is best for high-pressure containers used to store hydrogen? Is there anyone who works in hydrogen production who can explain why high-nickel steel is chosen?
Select based on the HTHA corrosion mechanism
High-pressure containers for storing hydrogen usually are made of high-nickel steel, as it possesses excellent corrosion resistance and high mechanical strength. Hydrogen molecules are small and can easily penetrate materials; high-nickel steel can effectively reduce the penetration and diffusion of hydrogen, thereby enhancing safety. Furthermore, high-nickel steel exhibits good toughness and stability in low-temperature environments, making it suitable for storing high-pressure hydrogen. .
Thank you all for your valuable insights. What are the main forms of hydrogen corrosion to be considered in high-pressure hydrogen storage vessels? Are there any recommended materials for normal temperature conditions and high temperature conditions?
If you have the money, go for carbon fiber: lol
Hydrogen corrosion mainly includes phenomena such as hydrogen-induced cracking (HIC), hydrogen-induced delayed fracture (HDF), and hydrogen embrittlement. Under normal temperature conditions, high-nickel steel or specially treated low-alloy steel can be used to reduce the impact of hydrogen. Under high-temperature conditions, it is recommended to use more heat-resistant alloy materials, such as austenitic stainless steel or nickel-based alloys, which can maintain good mechanical properties and corrosion resistance in high-temperature environments. .
4130X--American grade---CrMo steel