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What is the difference between a stainless steel heat exchanger and a carbon steel heat exchanger?
Apr 09, 2019

The heat exchanger is made of carbon steel and stainless steel, so what is the difference between the stainless steel heat exchanger and the carbon steel heat exchanger? The first is different colors: stainless steel contains more chromium and nickel metal. The color of the stainless steel heat exchanger is mostly silver. The carbon steel is mainly carbon and iron alloy. The other metal elements are less. The main color of the exterior is iron color, and the color will be dark. a lot of.


Secondly, the smoothness is different. The stainless steel contains many other metal elements, and the surface of the stainless steel heat exchanger is smooth; the carbon steel contains more iron and carbon, has the essence of iron, and has no smooth stainless steel surface. The magnetic properties are also different. The surface of the stainless steel heat exchanger is not magnetic under normal conditions and will not be adsorbed by the magnet.


In essence, stainless steel heat exchangers have better corrosion resistance and reduce the chance of rust, thus improving their service life. At the same time, it also has a high resistivity, about 5 times that of carbon steel; a large coefficient of linear expansion, 40% larger than carbon steel, and as the temperature increases, the value of the coefficient of linear expansion also increases accordingly. Stainless steel heat exchangers also have low thermal conductivity, and these properties will determine the application in actual conditions.


In the construction and working principle of heat exchangers, carbon steel heat exchangers are generally used in applications where load or stress is required, that is, mechanical properties are required; and stainless steel heat exchangers are mainly used for medium corrosion, that is, to ensure Chemical or corrosion

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