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Attention! Why is stainless steel rust?

  • Author:E-BON
  • Source:E-BON
  • Release on:2018-01-02
Why is stainless steel rust? When the stainless steel tube surface appear brown rust (point) when people are surprised: "stainless steel does not rust, rust is stainless steel, steel may be a problem". Actually, this is a one-sided view of the error of the lack of understanding of stainless steel. Stainless steel will rust under certain conditions of. E-BON the most excellent stainless steel company, which provide you with stainless steel food tongs China.

Stainless steel has the ability to resist atmospheric oxidation - that is, rust - free, and also has the ability to corrode in the medium containing acid, alkali and salt - that is, corrosion resistance. But its corrosion resistance is the size of steel with its own chemical composition, increase mutual status, conditions of use and environmental changes in the type of media. Such as the 304 steel pipe, in the dry clean atmosphere, have absolutely excellent anti-corrosion ability, but it will be moved to the beach area, with large amounts of sea salt fog, will rust quickly; and the good performance of 316 steel pipe. Therefore, not any kind of stainless steel, can in any environment corrosion, no rust.   

Stainless steel is a very thin layer formed on the surface and the stability of the fine solid chromium rich oxide film (protective film), to prevent the infiltration of oxygen atoms, to oxidation, and the ability to obtain anti-corrosion. Once there are some reasons, this film was constantly destroyed, air or liquid oxygen in the original will continue to infiltrate or metal atoms of iron to keep out from the loose formation of iron oxide, gold is also surface by constantly corrosion. Many of the surface damage in the form of daily living in see are as follows:
1. stainless steel deposited dust or heterogeneous metal particles containing other metal elements of objects, in the humid air, condensed water and adhesion between the stainless steel, the two together into a micro battery, causing the electrochemical reaction, the film has been destroyed, called electrochemical corrosion.   

2. stainless steel surface adhesion organic juice (such as vegetables, soup, sputum), oxygen in the water case, a long time, organic acid, organic acid on the surface of metal corrosion. E-BON the stainless steel specialist, China Kitchenware Supplier.
3. stainless steel surface adhesion containing acid, alkali and salts (such as wall decoration, stone alkaline ash water splash), caused by local corrosion.  

4. in air pollution (such as atmospheric contains a lot of sulfide, carbon monoxide, nitrogen oxides), the case of condensed water to form sulfuric acid, nitric acid, acetic acid, caused by chemical corrosion.  
The above conditions can cause corrosion of the stainless steel surface protection film. Therefore, in order to ensure that the metal surface is permanently bright and not corroded, we suggest that:

1. should be cleaned regularly to decorate the surface of stainless steel, remove attachments, eliminate lead to modification of the external factors.   

2. coastal areas to use 316 stainless steel, 316 materials can resist corrosion in seawater.  

3. on the market some stainless steel chemical composition can not meet the relevant national standards, up to 304 material requirements.

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