304 stainless steel wire 316 stainless steel wire Will not rust

Why? Rusting stainless steel wire also occur when the stainless steel surface rust brown dots, people great surprise: that "Stainless steel is not rusty, rust is not stainless steel, the steel may be a problem," Actually, this. stainless steel wire is a lack of understanding of a one-sided view of the error. Stainless steel rods under certain conditions will rust. 304 stainless steel wire  has the ability to resist the atmospheric oxidation - namely stainless steel, while also having the acid, alkali salt corrosion medium capacity - namely corrosion resistance. But the size of its corrosion resistance of the steel itself is with its chemical composition, plus mutual status, conditions of use and environmental media type and change, 304 stainless steel wire, in a clean dry atmosphere, there is absolutely excellent anti-corrosion ability, but to move it to the waterfront area, contains a lot of salt in the sea mist, Stainless steel wires  soon be rusty, and 316 stainless steel wire, the performance is good. Therefore, not any kind of stainless steel, in any environment resistant to the corrosive, does not rust. Stainless steel is a layer of oxide film extremely light and strong fine stable chromium-rich oxide film (protective film) formed on its surface, to prevent further infiltration of oxygen atoms, to oxidation, to obtain the ability to resist corrosion. Once there is some reason, this film was constantly undermined, air or liquid oxygen atoms or metal will continue to penetrate the iron atoms constantly analyze from it, forming a loose iron oxide, the metal surface will continue to rust.