Tangshan square tube manufacturer Introduce to you: stainless steel Rectangular Pipe Is it rusty or not?

Most people think that stainless steel will not rust, and the rust is not stainless steel. In fact, some stainless steel materials with low nickel content will rust under certain conditions. Stainless steel square tube has the ability to resist atmospheric oxidation and corrosion in the medium containing acid, alkali and salt. However, its corrosion resistance depends on the chemical composition of the steel itself, the state of mutual addition, service conditions and the type of environmental medium. Therefore, it is not any kind of stainless steel, and can resist corrosion and rust in any environment.

Stainless steel relies on the very thin, firm, fine and stable chromium rich oxide film formed on its surface to prevent oxygen atom penetration and oxidation, and to obtain rust resistance. If the film is damaged, the stainless steel square tube will lose its rust resistance. There are four common ways of destruction in daily life:

(1) The surface of stainless steel square tube is attached with organic juice. In the presence of water and oxygen, it forms an organic acid. For a long time, organic acids will corrode metal surfaces.

(2) In the polluted air, in the presence of condensed water, it will form liquid spots of sulfuric acid, nitric acid and acetic acid, leading to chemical corrosion.

(3) Dust or heterogeneous metal particles containing other metal elements are deposited on the surface of stainless steel rectangular tubes. In humid air, the condensed water between accessories and stainless steel connects them into a miniature battery. Due to the electrochemical reaction, the protective film is damaged, which is called electrochemical corrosion.

(4) The surface of stainless steel square tube and rectangular tube contains acid, alkali and salt, resulting in local corrosion.

That's it Tangshan Square tube manufacturer Introduced to you“ Stainless steel square Torque tube Is it rusty or not? ”If you have other questions, please contact us!