The difference between stainless steel and galvanized steel

Before we can understand whether stainless steel and galvanized steel will cause rust problems, we need to understand the difference between them.

Stainless steel is a corrosion-resistant metal material, the main components are iron, chromium, nickel, and so on. Stainless steel is widely used for its corrosion resistance, heat resistance, and aesthetics, especially in the chemical, medical, electronic, and construction fields.

Galvanized steel is a ferrous material that is coated with zinc on the surface to prevent oxidation and corrosion and improve its corrosion resistance. Galvanized steel is mainly used in fields such as construction, the automobile industry, the light industry, and agriculture.

Whether the contact between stainless steel and galvanized steel will rust？

When stainless steel and galvanized steel come into contact, an electrochemical reaction occurs, so there is a possibility of rusting. However, this phenomenon does not affect stainless steel too much, nor does it affect the overall corrosion resistance of stainless steel.

If stainless steel and galvanized steel are in contact, there will be substances such as grease and moisture on the surface, which will easily breed bacteria and viruses, and there will be hygiene problems. Therefore, in practical applications, contact between stainless steel and galvanized steel should be avoided as much as possible.

How to avoid the rusting of stainless steel and galvanized steel？

In order to avoid rust problems when stainless steel and galvanized steel are in contact, the following measures can be taken:

1. When welding stainless steel and galvanized steel, welding materials that meet the requirements should be selected to avoid the presence of oxides. 

2. Apply insulating coating or use an insulating liner at the contact position of stainless steel and galvanized steel to avoid electrochemical reactions.

3. When stainless steel and galvanized steel are in contact, keep the surface clean and avoid substances such as grease and moisture.

4. When stainless steel and galvanized steel are in contact, if possible, other metal materials should be selected instead.

Conclusion

When stainless steel and galvanized steel are in contact, rusting may occur, but it will not have a great impact on the overall performance and corrosion resistance of stainless steel. In practical applications, the contact between stainless steel and galvanized steel should be avoided as much as possible to avoid hygiene problems. If contact is required, corresponding measures should be taken to avoid the presence of oxides and other harmful substances that will affect the quality of stainless steel.