Seeking advice on material selection for the shell and tube sides of a heat exchanger
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Shell-side fluid: secondary steam (65 degrees). Tube-side fluid: cooling water (32 degrees). Is it acceptable to use 0CR18Ni9 for both the shell-side and tube-side materials when selecting materials for the heat exchanger?
For the water leakage prevention process, upgrading the material can be considered~~
If there are no special requirements, 20# steel is sufficient.
This post was last edited by nj1952 on 2017-6-14 09:03. Under these operating conditions (shell side/tube side), carbon steel exhibits good corrosion resistance (annual corrosion rate of 0.05–0.5 mm/year).
The secondary gas should contain entrained particles and be corrosive; 304 is sufficient
Both steam and cooling water are very common materials with low corrosivity. Since the parameters such as temperature and pressure are not very high, ordinary carbon steel should suffice; stainless steel is certainly an even better option, though it requires a higher investment and is thus a waste of money.