Vacuum bake out of 316 SS to prevent hydrogen outgassing

[JPrice2008]

Hi all, I am wondering if anyone has any information on vacuum bake out of 316 SS to prevent hydrogen outgassing? Temperature, duration, and vacuum pressure? I have read about the chambers being baked at around 400°C for 24 hours, but nothing about smaller parts.

Thanks in advance.

 

[EdStainless]

As far as I know this only applies to surface adsorption, the material it self will not hold any hydrogen.
The same practice would work, but with smaller parts less time may be suitable.

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Plymouth Tube

 

[JPrice2008]

Thanks Ed. Follow up question. Everything I have read seems to correlate the thickness of the walls to the bake temperature/time. Anyone know the reasoning for this if the vacuum bake out process only applies to surface adsorption?

Thanks.