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The plates of plate heat exchangers can be made of carbon steel, but they are only suitable for specific working conditions and have clear application limitations. Applicable Scenarios and Advantages Carbon steel is one of the optional materials for plate heat exchanger plates. Its biggest advantages are low cost, high cost performance, and hardness that can meet demand. It is suitable for conventional ordinary working conditions with good water quality and non-corrosiveness. It is an economical choice for projects with limited budgets. Core application limitations The fatal disadvantage of carbon steel is poor corrosion resistance: In an environment containing acid, alkali or other highly corrosive media, the service life will be greatly shortened. Long-term exposure to highly corrosive media such as seawater will cause rapid corrosion damage. Therefore, carbon steel must not be used in such scenarios. If the plate material is improperly selected (carbon steel is used to cope with corrosive conditions), it is easy to cause Plate corrosion, cracks, and perforations will eventually lead to fluid leakage in the heat exchanger. Currently, the most commonly used plate material in the industrial field is still stainless steel, which can cover about 80% of conventional application scenarios. Only in special cases where the budget is limited and the medium is non-corrosive, carbon steel will be chosen to make plates.