Heat exchanger
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Gentlemen, what material offers the best cost-performance ratio for heat exchangers at 550°C? Process media can be ignored. Pressure resistance: 0.8 MPa
15CrMoR can be used; for a higher grade, S30408 is an option.
At 550°C, 15CRmo should be chosen; the external pressure curve is estimated to be above the allowable limit. In such cases, the material must be selected based on the temperature of the metal wall. The design specifies 550 degrees, and it seems that the heat exchange tubes cannot meet the requirements
The process media have been ignored; what else needs to be considered? Definitely carbon steel – 304 cannot be used. Above 400 degrees, even austenitic 304 turns into martensite