The materials of construction used in heat exchangers
depend on the fluids or vapor being handled, process conditions, such
as pressures, temperatures, etc., and a balance of initial cost
against expected life and maintenance requirements.
Any component or the entire unit can be made of
materials such as carbon steel, stainless steel, nickel, nickel alloys or other special alloys.
Selection of materials involves careful evaluation of
factors other than the basic cost of possible metals compatible with
the application.