Why does stainless steel also rust? 

When the surface of stainless steel pipe stainless steel pipe brown rust spots, people will be surprised: "stainless steel is not rust, rust is not stainless steel, which may be a problem with the quality of steel" In fact, this is a lack of understanding of stainless steel misunderstanding, stainless steel in certain conditions will also rust. 

Stainless steel has the ability to resist atmospheric oxidation - that is, stainless steel, and also has the ability to corrode in media containing acids, alkalis and salts - that is, corrosion resistance, but the size of its corrosion resistance with the chemical composition of the steel itself, plus mutual state, use conditions and the type of environmental media and change, such as 304 steel pipe, in a dry and clean environment with absolutely excellent corrosion resistance, but when moved to the seaside area When moved to coastal areas, it will quickly rust in the sea spray containing large amounts of salt. Steel tube 316, on the other hand, performs well and is therefore not any kind of stainless steel that is resistant to corrosion and will not rust in any environment. 

Stainless steel relies on a very thin, strong, fine and stable chromium-rich oxide film (protective film) formed on its surface to prevent oxygen atoms from continuing to penetrate and continue to oxidise, thus gaining resistance to corrosion, once the surface film is continuously damaged for some reason, oxygen atoms in the air or liquid will continue to penetrate, or iron atoms in the metal will continue to precipitate out, forming loose iron oxide, and the metal surface will also The surface film is damaged in many forms, and the following are common in daily life: 1.

1, stainless steel surface containing other metal elements of the dust or adhesion of metal particles. In the humid air, the adhesion and stainless steel condensation between the two connected into a microcell, thus triggering an electrochemical reaction, the protective film is destroyed, which is called electrochemical corrosion.

2, stainless steel surface adhesion of organic juice, in the presence of water and oxygen, constituting an organic acid, a long time then the organic acid corrosion of the metal surface.

3, in the polluted air, encounter condensation, the formation of sulphuric acid, nitric acid, acetic acid liquid point, causing chemical corrosion.

To ensure that the metal surface is permanently bright and not rusted, we recommend that

All of the above can cause the destruction of the protective film on the surface of stainless steel triggering rust and corrosion. Therefore, in order to ensure that the metal surface is permanently bright and not rusted, we recommend that

1, the decorative stainless steel surface must be cleaned and scrubbed frequently to remove adherents and eliminate external factors that trigger retouching.

2, seaside areas to use 316 stainless steel, 316 material can resist seawater corrosion.

3, the market some stainless steel tube chemical composition can not meet the corresponding national standards, can not meet the requirements of 304 material, so it will also cause rust, which requires users to carefully select a reputable manufacturer's products.

The above is a small introduction to why stainless steel will rust? Figure it out! Tell your customers! I hope it can help everyone. If there are other aspects you want to know, you can come to consult us.

Why does stainless steel also rust? 

When the surface of stainless steel pipe stainless steel pipe brown rust spots, people will be surprised: "stainless steel is not rust, rust is not stainless steel, which may be a problem with the quality of steel" In fact, this is a lack of understanding of stainless steel misunderstanding, stainless steel in certain conditions will also rust. 

Stainless steel has the ability to resist atmospheric oxidation - that is, stainless steel, and also has the ability to corrode in media containing acids, alkalis and salts - that is, corrosion resistance, but the size of its corrosion resistance with the chemical composition of the steel itself, plus mutual state, use conditions and the type of environmental media and change, such as 304 steel pipe, in a dry and clean environment with absolutely excellent corrosion resistance, but when moved to the seaside area When moved to coastal areas, it will quickly rust in the sea spray containing large amounts of salt. Steel tube 316, on the other hand, performs well and is therefore not any kind of stainless steel that is resistant to corrosion and will not rust in any environment. 

Stainless steel relies on a very thin, strong, fine and stable chromium-rich oxide film (protective film) formed on its surface to prevent oxygen atoms from continuing to penetrate and continue to oxidise, thus gaining resistance to corrosion, once the surface film is continuously damaged for some reason, oxygen atoms in the air or liquid will continue to penetrate, or iron atoms in the metal will continue to precipitate out, forming loose iron oxide, and the metal surface will also The surface film is damaged in many forms, and the following are common in daily life: 1.

1, stainless steel surface containing other metal elements of the dust or adhesion of metal particles. In the humid air, the adhesion and stainless steel condensation between the two connected into a microcell, thus triggering an electrochemical reaction, the protective film is destroyed, which is called electrochemical corrosion.

2, stainless steel surface adhesion of organic juice, in the presence of water and oxygen, constituting an organic acid, a long time then the organic acid corrosion of the metal surface.

3, in the polluted air, encounter condensation, the formation of sulphuric acid, nitric acid, acetic acid liquid point, causing chemical corrosion.

To ensure that the metal surface is permanently bright and not rusted, we recommend that

All of the above can cause the destruction of the protective film on the surface of stainless steel triggering rust and corrosion. Therefore, in order to ensure that the metal surface is permanently bright and not rusted, we recommend that

1, the decorative stainless steel surface must be cleaned and scrubbed frequently to remove adherents and eliminate external factors that trigger retouching.

2, seaside areas to use 316 stainless steel, 316 material can resist seawater corrosion.

3, the market some stainless steel tube chemical composition can not meet the corresponding national standards, can not meet the requirements of 304 material, so it will also cause rust, which requires users to carefully select a reputable manufacturer's products.

The above is a small introduction to why stainless steel will rust? Figure it out! Tell your customers! I hope it can help everyone. If there are other aspects you want to know, you can come to consult us.