Which type of stainless steel would be suitable for tubes to be placed in an industrial cooling system that works with CO2 and ammonia fluids and the max pressure is 45 bar? The stainless steel tubes will replace copper tubes.
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Brian Dalder Forum Moderator 177 Posts
Re: Which stainless steel would resist ammonia or carbon dioxide corrosion?3 August 2011 at 1:29pmAll grades of stainless steel resist corrosion by ammonia or corrosion by carbon dioxide to moderately high temperatures (100 °C). Copper alloys can be attacked by carbon dioxide depending on what oxidants, including dissolved oxygen, are present. Copper alloys can also suffer stress corrosion cracking and other forms of attack in ammonia service. A stainless steel seems like a better choice for this application.