Thanks for that, i was aware that the gas might react with the steel but for example if you where to take a cylinder that did not react with the gas and had no issues with strength at what pressure could you safely store hydrogen gas without doing anything to it other than pressurising it.
Thankyou for your reply, I think what i as trying to ask is if you had an ordinary gas cylinder what pressure could hydrogen be stored, at without anything else being done to it eg without using special alloys to absorb large amounts of the gas, just a plain old steel cylinder.
I understand the fact that hydrogen has a large physical volume and that it boils at a certain pressure meaning that it needs to be stored cryogenically but what pressure can it be stored at before you get into problems and what would the storage size of the vessel that stored the hydrogen be to...