Will the Q345C Rectangular Tube Rust?
Date:2022-03-10View:508Tags:Rectangular Tube,Rust
Does the q345c rectangular tube rust?
Most people think that stainless steel will never rust, and what does rust is not stainless steel. In fact, some stainless steel materials with low nickel content will also rust under certain conditions. Q345C rectangular tube has the ability to resist atmospheric oxidation, and also has the ability to resist corrosion in the medium containing acid, alkali and salt; but the size of its anti-corrosion ability depends on the chemical composition of the steel itself, the mutual state, and the conditions of use. and environmental media type. Therefore, it is not any kind of stainless steel, which can resist corrosion and rust in any environment.
Stainless steel relies on a very thin, firm and stable chromium-rich oxide film formed on its surface to prevent oxygen atoms from penetrating into oxidation, thereby obtaining the ability to resist rust. If the film is damaged, the q345c rectangular tube will lose its rust resistance. There are four common ways of destruction in daily life:
1) The surface of the q345c rectangular tube adheres to the organic juice, which forms organic acid in the presence of water and oxygen, and the organic acid corrodes the metal surface for a long time;
2) In the polluted air, when it encounters condensed water, it forms liquid spots of sulfuric acid, nitric acid and acetic acid, causing chemical corrosion;
3) On the surface of the q345c rectangular tube, there are deposits of dust or heterogeneous metal particles containing other metal elements. In the humid air, the condensed water between the deposits and the stainless steel connects the two into a micro-battery, which leads to electrochemical reactions. reaction, the protective film is damaged, which is called electrochemical corrosion;
4) The surface of the q345c rectangular tube contains acids, alkalis and salts, which cause local corrosion.
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