Usually, stainless steel is chosen as the material for making pressure regulating springs, which is an important factor. Stainless steel can be designed into a wide range of products and also has excellent corrosion resistance. Next, let's learn why stainless steel springs are corrosion-resistant. Please refer to the following text for specific content.
1、 Stainless steel is a modern material with a 60 year development history
Since the invention of stainless steel at the beginning of this century, it has integrated the image of modern materials and its outstanding reputation in architectural applications, making its competitors envious.
As long as the steel grade is selected correctly, processed appropriately, and maintained properly, stainless steel will not produce corrosion, pitting, rusting, or wear. Stainless steel is still one of the strongest building metal materials. Due to its excellent corrosion resistance, stainless steel can permanently maintain the integrity of structural components in engineering design. Chromium containing stainless steel combines mechanical strength and high ductility, making it easy to manufacture components and meet the needs of architects and structural designers.

The key to the success of stainless steel in the construction, building, and structural industries is its excellent corrosion resistance.

2、 Why are pressure regulating springs made of stainless steel resistant to corrosion?
All metals react with oxygen in the atmosphere to form oxide films on their surfaces. Unfortunately, the iron oxide formed on ordinary carbon steel continues to oxidize, causing corrosion to expand and ultimately forming pores. Coatings or oxidation resistant metals such as zinc, nickel, and chromium can be used for electroplating to ensure the surface of carbon steel, but as is well known, this protection is only a thin film. If the protective layer is damaged, the steel underneath begins to rust.
The corrosion resistance of stainless steel depends on chromium, but because chromium is one of the components of steel, the protection methods are not the same.
When the addition of chromium reaches 10.5%, the atmospheric corrosion resistance of the steel significantly increases, but at higher chromium content, although the corrosion resistance can still be improved, it is not significant. The reason is that when chromium is used to alloy steel, the type of surface oxide is changed to a surface oxide similar to that formed on pure chromium metal. This tightly adhered chromium rich oxide protects the surface and prevents further oxidation. This type of oxide layer is extremely thin, through which the natural luster of the steel surface can be seen, giving stainless steel a unique surface. Moreover, if the surface is damaged, the exposed steel surface will react with the atmosphere for self repair, forming a new "passivation film" that continues to provide protection.
Therefore, all stainless steels have a common characteristic, that is, the chromium content is above 10.5%.
In summary, the corrosion resistance of pressure regulating springs made of stainless steel is very good, so we can use this material in large quantities for production. I also hope that our springs can appear in more and more daily lives, bringing help to everyone! Thank you for watching!