Is stainless steel rust-free? No, stainless steel will not rust, but also resist acid corrosion. The full name
of stainless steel is stainless acid-resisting steel ".
Stainless steel has a formula, in addition to iron, there will be many other, such as chromium, nickel,
nitrogen, etc. The acid corrosion resistance of the obtained stainless steel varies with the composition and proportion of additives. Why do you see rusty stainless steel-why does it rust? Because it is corroded by acid (rust after acid corrosion is the same in appearance as rust after water corrosion), such as acidic rainwater.