Stainless steel really never rust?
Stainless steel is just inside a small amount of chromium added, the main ingredient is still iron, so certainly can not afford to smoke up, it is not stainless steel, iron content more than a certain amount, or rust!
This is similar to aluminum. Can also form a layer of oxide film on the surface of the aluminum, so aluminum is not easy to rust. Stainless steel or aluminum, or they have such a film is protected inside, so in the wash stainless steel products or aluminum products, decontamination powder and wipe the surface with better not. Otherwise it will damage the film.
Compared with stainless steel and iron is not easy to rust, because it is made of stainless steel plate, the surface will form a layer of strong film, will be protected. This internal film is an oxide, is actually a "rust", so it can be said is a kind of stainless steel than iron is easy to rust "generating" the metal, but it is the "rust" just play the role of protective film.
Stainless steel is not easy to rust, not not rust. Because it is not easy to rust, it was called stainless steel. Stainless steel is common to iron doped chromium made of about 18%, which means that it is a kind of alloy. In addition to iron doped nickel made of stainless steel.
