What kind of stainless steel is not easy to rust?

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

1. The content of alloy elements. Generally speaking, steel with a chromium content of 10.5% is not easy to rust. The higher the content of chromium and nickel, the better the corrosion resistance. For example, the nickel content of 304 material is 8-10%, and the chromium content reaches 18-20%. Such stainless steel will not rust under normal circumstances.

2. The smelting process of the production enterprise will also affect the corrosion resistance of stainless steel. Large stainless steel plants with good smelting technology, advanced equipment and advanced technology can ensure the control of alloy elements, removal of impurities and control of billet cooling temperature. Therefore, the product quality is stable and reliable, the internal quality is good, and it is not easy to rust. On the contrary, some small steel plants have backward equipment and backward technology. During the smelting process, impurities cannot be removed, and the products produced will inevitably rust.

3. External environment, dry and well-ventilated environment is not easy to rust. However, areas with high air humidity, continuous rainy weather, or high acidity and alkalinity in the air are prone to rust. 304 stainless steel will rust if the surrounding environment is too bad.