17-4 PH with Nitrous Oxide?
17-4 PH with Nitrous Oxide?
(OP)
Group:
I'd appreciate any opinions on use of 17-4 PH stainless for nitrous oxide service (pure NO, hospital application, 50 PSIG nominal).
Pressure sensor manufacturer claims corrosion will be severe (wetted material is all 17-4 PH SS). Gas supplier says it's fine.
If it's not fine, suggestions for a more compatible material?
Many thanks and good on y'all,
Goober Dave
I'd appreciate any opinions on use of 17-4 PH stainless for nitrous oxide service (pure NO, hospital application, 50 PSIG nominal).
Pressure sensor manufacturer claims corrosion will be severe (wetted material is all 17-4 PH SS). Gas supplier says it's fine.
If it's not fine, suggestions for a more compatible material?
Many thanks and good on y'all,
Goober Dave





RE: 17-4 PH with Nitrous Oxide?
This is the only area where we use 17/4 in contact with NOX. Our material of construction is normally 304ELC or Titanium.
I don't know if the company that converts NOX to N2O uses any 17/4 wetted parts in their process.
This compressor actually compresses the off gas from our process for recycling or send it to a guest company that converts the NOX to N2O Oxide for the trades, whipped cream chargers and especially medical use.
RE: 17-4 PH with Nitrous Oxide?
Thanks for responding.
Good on ya,
Goober Dave
RE: 17-4 PH with Nitrous Oxide?
I also verified that the 17/4 wheel replaced the original Ti 6AL-4V wheel that underwent severe corrosion in this service. The Ti mentioned in my first post is Ti Gr2.
RE: 17-4 PH with Nitrous Oxide?
We electrical power and controls engineers don't get the education we need in materials... Corrosive behavior, in particular, is hard to quantify.
Best to you,
Goober Dave