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   feld (feld@bikeshed.party)'s status on Monday, 11-Sep-2023 09:23:56 JST feld
   > Hydrogen embrittlement is a phenomenon that occurs when hydrogen diffuses into a metal and weakens it, making it more susceptible to cracking. H2 for transportation is pressurized at 500-700 bar-`7,300-10.300 psi.
   hydrogen embrittlement is an issue when using hydrogen as a fuel for transportation. The hydrogen atoms can diffuse into the metal components of a fuel cell or hydrogen fuel tank, making them more susceptible to cracking. This can lead to premature failure of the components, which could pose a safety hazard. Special alloys and coatings are required to lessen the danger. Hydrogen for transportation is closer to rocket technology than gasoline or diesel.
   
   
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   Well that's something new
   • Embed this notice
     feld (feld@bikeshed.party)'s status on Monday, 11-Sep-2023 09:30:51 JST feld

     in reply to

     • Andrew Bartlett
     I never considered that but perhaps it's less of an issue if it is at a lower pressure?
     
     Either way still dangerous
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     Andrew Bartlett (abartlet@mastodon.nzoss.nz)'s status on Monday, 11-Sep-2023 09:31:02 JST Andrew Bartlett

     in reply to

     @feld This is why the plan to put h2 into natural gas pipelines as a way to preserve that infrastructure is just plain silly.

     Let alone the interoperability issue of appliances expecting methane but getting hydrogen instead. Can't do a flag day on a whole town!

   • Embed this notice
     himay (himay@rave.ineptiarum.ca)'s status on Tuesday, 12-Sep-2023 01:16:26 JST himay

     in reply to
     @feld Yeeeeah…hydrogen and helium—both being such small atoms—are pretty tricky little critters to contain.
     feld likes this.