The main factors affecting the corrosion of stainless steel plates

Release time:

2024-05-27

In daily life, stainless steel plates are widely used in building materials. Generally, they do not cause corrosion, but in some cases, stainless steel plates may also corrode due to other factors. Most of the time, stainless steel is protected by an extremely thin and dense stable oxide film on the surface, which can prevent the continuous infiltration and oxidation of oxygen atoms, which is why stainless steel can resist corrosion.

There are three main factors that affect the corrosion of stainless steel plates:

The content of alloying elements. Generally speaking, steel with a chromium content of 10.5% is less prone to rusting. The higher the content of chromium and nickel, the better the corrosion resistance. For example, the nickel content of 304 material should be 8-10%, and the chromium content should reach 18-20%. Such stainless steel plates will not rust under normal circumstances.

2. The smelting process of production enterprises can also affect the corrosion resistance of stainless steel. Large stainless steel plants with good smelting technology, advanced equipment, and advanced processes can ensure the control of alloy elements, removal of impurities, and control of cooling temperature of steel billets. Therefore, the product quality is stable and reliable, with good internal quality and less prone to rusting. On the contrary, some small steel mills have outdated equipment and processes. During the smelting process, impurities cannot be removed, and the products produced will inevitably rust.

3. The external environment is dry and well ventilated, making it less prone to rusting. Areas with high air humidity, continuous rainy weather, or high acidity and alkalinity in the air are prone to rust. If the surrounding environment is too poor, rust can also occur.

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