How long can 304 stainless steel plates stay rust-free?

   The chromium content of 304 stainless steel plate is 18-19%, and the NI content is 8.0-8.9%. Due to its high nickel content, it has been greatly enhanced in anti-corrosion, and can last for more than 15 years in general environments. It can last about 5 years in harsh environments (such as coastal areas, areas with serious industrial pollution). Many users think that rusty stainless steel plates mean there is a quality problem. In fact, this is a one-sided understanding. Stainless steel is just more resistant to corrosion. It is recommended that customers choose 304 stainless steel plates when used outdoors, because the corrosion resistance of 304 stainless steel plates is several times stronger than that of 201 stainless steel plates in the same environment.

   When we choose stainless steel plates, it is impossible to distinguish between 201 and 304 stainless steel plates with the naked eye. When buying, it is best to ask the supplier for a test report on the composition of the stainless steel plate, or use stainless steel testing potion to identify its material.