On Apr 9, 5:15 pm, wrote:


Hmmmm. I see that I should have asked rather "Of what?" (relative to
hydrogen embrittlement)

If you want to use hydrogen on a large scale, you have to have some
way to distribute it such as is done with natural gas. Huge fleets of
liquid hydrogen tankers isn't going to cut it.

Because of hydrogen embrittlement, any such distribution system will
have to be built starting from zero as no existing system can handle
hydrogen and building such a system will be both an engineering and
economic challenge.

'mkay..

I'm well aware of the phenomenon related to hardened steels and
electroplating, but have no experience with embrittlement effects on
pipeline type steels (other than extreme cold) and was intrigued to
learn that Hydrogen was a concern.