What is the corrosion rate of liquid ammonia on carbon steel and low-alloy steel? Where can I find this information?
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What is the corrosion rate of liquid ammonia on carbon steel and low-alloy steel? Where can I find this information?
Without temperature or concentration information, it’s impossible to help... You can first check on corrosion-related forums; otherwise, you can use search engines and type in “ammonia corrosion” to see if you can find the information you need... ---------------------------------------------------- Try to find it on your own first – if you really can’t find it, then come and ask
The temperature is 50°C; the concentration is unknown
Go and check the NACE standards; they’re not available in the national standards. Furthermore, the damage caused by liquid ammonia to pressure-bearing equipment made of carbon steel and low-alloy steel is not due to ordinary corrosion, but rather to stress corrosion.
Check the chemical engineering handbook to see if there are any relevant data
Check the corrosion data and material selection manual; it is necessary to take into account the tendency of liquid ammonia to cause stress corrosion in carbon steel.
Are there any simple software tools, or summaries of experience, that allow for an intuitive selection of the corrosion allowance corresponding to a particular material?
I haven’t seen any similar small software yet.
It’s much more convenient to have something that’s easy to look up; otherwise, one has to rely on accumulated experience. That corrosion manual is too old, and it requires adding up various data in order to make judgments.
At present, apart from experience, that manual is the most valuable reference.