Why does 304 stainless steel pipe rust?
Recently, many will have questions, why 304 food grade stainless steel will also rust? Rust is not to buy their own counterfeit stainless steel products. So on this issue, JBLsteel to explain to everyone.
Academically speaking, stainless steel contains Fe, which will chemically react with Cl and corrode stainless steel. This may sound complicated. We simply point out that 304 food grade stainless steel is also known as austenitic stainless steel, and chloride ions are the natural enemies of various grades of austenitic stainless steel, but the impact of different grades of stainless steel is not the same, the reason is that the structural composition of austenite in stainless steel is mainly composed of chromium-nickel alloy, its chromium, nickel, chlorine is the same element. The isoelements will undergo exchange assimilation to form corrosion of stainless steel in chloride ion environment.
That is to say, 304 stainless steel is basically not corroded, but if it encounters a large number of chloride ions, it will rust, and in general, if the item is in sealed conditions, the corrosion rate is greater than the corrosion rate in an open environment. If the item is made of plate splicing, then the corrosion rate at the splicing will be greater than the corrosion rate in the rest of the place.
