Stainless steel is a steel with stainless and corrosion resistance as the main characteristics, and the chromium content is at least 10.5%, and the carbon content does not exceed 1.2%.

The term "stainless steel" does not simply refer to one kind of stainless steel, but refers to more than one hundred kinds of industrial stainless steels, and each developed stainless steel has good performance in its specific application field.

There are usually only six steel grades relevant to building construction applications. They all contain 17-22% chromium, and the better steel grades also contain nickel. Adding molybdenum can further improve the atmospheric corrosion resistance, especially the resistance to chloride-containing atmosphere corrosion.

Stainless steel can maintain the original appearance of the building. When determining the type of stainless steel to be selected, the aesthetic standards, the corrosiveness of the local atmosphere, and the cleaning system to be adopted should be considered.

However, other applications increasingly seek structural integrity or impermeability. For example, the roof and side walls of industrial buildings, these construction costs may be more important than aesthetics, and the surface is not very clean. The effect of using 304 stainless steel in a dry indoor environment is quite good.

However, to maintain its appearance outdoors in both the country and the city, frequent washing is required. For aesthetic results in outdoor environments, nickel-containing stainless steel is required.
304 stainless steel is widely used in curtain walls, side walls, roofs and other construction purposes, but in severely corrosive industries or marine atmospheres, it is best to use 316 stainless steel.

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