Q. Does stainless steel also rust?

A. Stainless steel is not a rust-proof metal

Stainless steel is made to prevent rust by adding a significant amount of chromium (usually 12% or more) to iron (Fe), and can be seen as alloy steel with complex components containing small amounts of carbon (C), nickel (Ni), silicon (Si), manganese (Mn), and Moribden (Mo) as needed.

The etymology of Stain + Less means no dirt.

In other words, it was named to mean “a metal that is difficult to rust.”

Therefore, stainless steel can also rust due to the external environment

Q. Then, what is an external environment that causes rust?

A. ① Chemicals (hydrochloric acid, sulfuric acid, lactic acid, etc.)

② When using drain cleaner

③ Where residues, such as dirt, food stains, kitchen detergents, etc., are continuously present in stainless steel

Corrosion on the bottom of the sink, decomposition of the drain, corrosion due to CI-

※ CI- : Chlorine