https://en.wikipedia.org/wiki/Hydrogen_embrittlement https://en.wikipedia.org/wiki/Hydrogen_embrittlement is caused by hydrogen diffusing through the metal, not

https://en.wikipedia.org/wiki/Hydrogen_embrittlement https://en.wikipedia.org/wiki/Hydrogen_embrittlement is caused by hydrogen diffusing through the metal, not by cold. Cold actually slows the diffusion.