Hydrogen on Aluminum: Important High-Temperature Effects

Summary for hydrogen on aluminum Discussion

hydrogen on aluminum is addressed mainly by Norman Wilson, who says aluminum will not react with hydrogen at and around room temperature, but hydrogen can permeate aluminum at elevated temperatures. He notes that the extent of permeation depends on conditions such as pressure and temperature, so there is no single temperature threshold given in the thread. The original questioner was asking whether hydrogen affects aluminum the way it affects steel, in the context of pressure vessel and fire extinguisher design. A later question asked how hot hydrogen must be to permeate aluminum, but the excerpt does not provide a specific numeric answer. Overall, the discussion suggests that under normal conditions aluminum is not significantly affected by hydrogen, while high-temperature service may require more careful consideration of operating conditions.