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Do You Know Learn from 304 Mirror Stainless Steel Plate Suppliers how stainless steel can have corrosion resistance. Of Stainless Steel?

Jul. 17, 2020

Learn from 304 Mirror Stainless Steel Plate Suppliers how stainless steel can have corrosion resistance. When the number of chromium atoms in the steel is not less than 12.5%, the electrode potential of the steel can be changed abruptly, from a negative potential to a positive electrode potential. Prevent electrochemical corrosion.


For example, the rust of 304l Stainless Steel Plate material may have the following reasons:


There are chloride ions in the environment of use, and chloride ions are widespread, such as salt,sweat traces.sea water,sea breeze,soil and so on. Stainless steel corrodes quickly in the presence of chloride ions, even more than ordinary low carbon steel. Therefore, there are requirements for the use environment of stainless steel, and it needs to be wiped frequently to remove dust and keep it clean and dry. (In this way, you can give him an "improper use".) There is an example in the United States: a company uses an oak container to hold a solution containing chloride ions. The container has been used for nearly a hundred years, and it was planned to be replaced in the 1990s. Because the oak material is not modern enough, the container leaked due to corrosion 16 days after the replacement of stainless steel.


Without solid solution treatment, the alloy elements are not dissolved into the matrix, resulting in low alloy content in the matrix structure and poor corrosion resistance. It is understood from the 304 Mirror Stainless Steel Plate Supplier that there is inherent intergranular corrosion, and this material without titanium and niobium has a tendency to intergranular corrosion. Adding titanium and niobium, together with stabilizing treatment, can reduce intergranular corrosion. A high-alloy steel that can resist corrosion in the air or in chemically corrosive media. Stainless steel has a beautiful surface and good corrosion resistance. It does not need to undergo surface treatments such as plating, and exerts the inherent surface properties of stainless steel. It is used in many A kind of steel, usually called stainless steel. High-alloy steels such as 13 chrome steel and 18-8 chrome-nickel steel represent performance. From the perspective of metallography, because stainless steel contains chromium, a very thin chromium film is formed on the surface. This film isolates the oxygen from the intrusion of the steel and acts as a corrosion resistance. In order to maintain the inherent corrosion resistance of stainless steel, steel must contain more than 12% chromium. It is used where welding is required. The lower carbon content minimizes the precipitation of carbides in the heat-affected zone near the weld, and the precipitation of carbides may cause stainless steel to produce intergranular corrosion (welding corrosion) in certain environments.


Development of antibacterial stainless steel A new type of material with structure, corrosion resistance and antibacterial functions developed by the research group led by researcher Yang Ke from the Institute of Metal Research of the Chinese Academy of Sciences, antibacterial stainless steel, passed the scientific and technological achievement appraisal organized by the Shenyang Municipal Science and Technology Bureau . The expert committee unanimously agreed that this achievement filled the domestic gap and reached the international advanced level of similar materials.

Do You Know The Corrosivity And Application Of Stainless Steel?

Stainless Steel Pipe

Function: Tested by authoritative organizations, the killing rate of antibacterial stainless steel to Escherichia coli and Staphylococcus aureus is more than 99%, and it also has a significant killing effect on other bacteria such as Candida albicans and Solanum, showing excellent Broad-spectrum antibacterial and antibacterial durability. The tests conducted by the National Institute of Drugs and Biological Products show that the antibacterial stainless steel fully meets the national technical standards in terms of toxicity and human safety. While imparting antibacterial properties to stainless steel, the mechanical properties, corrosion resistance, hot and cold processing, and welding properties of the material are equivalent to those of the original stainless steel.


Application: The successful development of antibacterial stainless steel provides a broad space for the development of antibacterial products. The development potential of antibacterial stainless steel products is huge, and the market prospect is extremely broad. At present, many domestic manufacturers have expressed strong interest in antibacterial stainless steel, and the research group is actively seeking support for pilot trials, striving to convert the results into commodities as soon as possible.


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