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Material selection for high-pressure hydrogen systems

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At 700 bar, material selection becomes a safety decision

Hydrogen refueling stations operate at pressures up to 700 bar. At these levels, material performance is critical.

Yet many systems are still designed using fragmented specifications, multiple connections, and assumptions based on lower-pressure applications.

That’s where risks occur.

What’s really at stake

For engineers and project teams designing hydrogen refueling stations, material selection directly affects:

  • Resistance to hydrogen embrittlement
  • Fatigue performance under cyclic pressure loading
  • Inspection and maintenance intervals
  • Dimensional stability at high pressure
  • Overall system reliability and safety

Small variations in material properties or system design can lead to disproportionate consequences over time.

Why seamless matters

Alleima supplies seamless stainless steel tubing engineered for high-pressure hydrogen environments.

By eliminating welds and connections, seamless tubing removes potential weak points from the system – improving structural integrity and reducing inspection complexity.

Designed for high-pressure hydrogen applications

Typical use-cases include:

  • Hydrogen refueling stations (HRS)
  • High-pressure distribution systems
  • Gas storage solutions
  • Heat exchanger systems in energy environments

To support your decision-making, we’ve outlined the key material considerations for high-pressure hydrogen systems.