Materials resistant to Hydrogen Embrittlement
Materials resistant to Hydrogen Embrittlement
(OP)
I'm looking for high strength stainless steels resistant to hydrogen embrittlement. I realize the 300 series are resistant and probably Nitronic 60, but I'm having other issues with those materials.
What I really need is a good list of materials that provides their susceptibility to hydrogen embrittlement, especially in a 100% H2 atmosphere. Something like a material compatibility list giving different levels of attack to various common materials.
Side note: are aluminum alloys susceptible to H2 embrittlement?
What I really need is a good list of materials that provides their susceptibility to hydrogen embrittlement, especially in a 100% H2 atmosphere. Something like a material compatibility list giving different levels of attack to various common materials.
Side note: are aluminum alloys susceptible to H2 embrittlement?





RE: Materials resistant to Hydrogen Embrittlement
RE: Materials resistant to Hydrogen Embrittlement
Ref: http://bo
If a stainless steel or other material is operating in a pure H2 environment at up to 11,000 psi but below this temp (ie: atmospheric temp down to cryogenic temp) then I assume from this chart that no attack is predicted and the part is fine, regardless of material (ex: 17-4 PH) or condition (H900). Is that correct?
RE: Materials resistant to Hydrogen Embrittlement
RE: Materials resistant to Hydrogen Embrittlement
One thing I've heard as a "rule of thumb" is to use steels with lower ultimate strength, say 80 ksi or so. Does this really help? If for example, I move away from the harder versions of 17-4 PH to a H1150 temper, does this help reduce embrittlement?
RE: Materials resistant to Hydrogen Embrittlement
Yes, it will help. What exactly are you interested in for cryogenic application with the above materials? Normally, I would stick with the 3XX series austenitic stainless steels for cryogenic application in hydrogen service.
RE: Materials resistant to Hydrogen Embrittlement
I take it aluminum is ok too?
RE: Materials resistant to Hydrogen Embrittlement
RE: Materials resistant to Hydrogen Embrittlement
RE: Materials resistant to Hydrogen Embrittlement
It depends on temperature, pressure and the presence of any contaminants either on the surface of the metal or in the gas that could result in the formation of nascent hydrogen (charging).
RE: Materials resistant to Hydrogen Embrittlement
RE: Materials resistant to Hydrogen Embrittlement
ww
RE: Materials resistant to Hydrogen Embrittlement
RE: Materials resistant to Hydrogen Embrittlement
http:/