What material should be used for pipes containing 42% nitrogen, 29% NO, and 25% NO2?
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Hello everyone! For a pipeline containing 42% nitrogen, 29% NO, and 25% NO2, 304L material was chosen for the foundation design, but I couldn’t find any evidence for this decision; the metal corrosion manuals don’t provide data on nitric oxide. Does any expert have relevant evidence? Thank you!
Using 304 stainless steel should be fine; nitrogen oxides, especially nitrogen dioxide, will cause passivation on the pipeline surface in the presence of trace amounts of water.
Thank you! Do you have any information on this? I couldn’t find any relevant information in the \"Corrosion Data and Material Selection Handbook\". It’s only nitric acid; it seems that 304 will suffice.
What about the Q345 material? A layer of anti-corrosion coating is applied to the outer surface of the steel pipe
It doesn’t matter if it’s dry; acidic gases only become acidic when they come into contact with water.