There are three main factors affecting stainless steel corrosion:

1. Content of alloy elements

Generally speaking, steel with 10.5% chromium content is not easy to rust. The higher the content of chromium and nickel, the better the corrosion resistance. For example, the content of nickel in 304 material is 8-10%, and the content of chromium is 18-20%. Such stainless steel will not rust in general.

2. The smelting process of production enterprises will also affect the corrosion resistance of stainless steel.

The large stainless steel plant with good smelting technology, advanced equipment and advanced technology can be guaranteed in the control of alloy elements, impurity removal and billet cooling temperature. Therefore, the product quality is stable and reliable, and the internal quality is good, and rust is not easy. On the contrary, some small steel mills are backward in equipment and technology. Impurities can not be removed in the smelting process, and the products produced will inevitably rust.

3. External environment, dry and ventilated environment is not easy to rust.

However, areas with high 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.