published date: 2015/10/15      Hits: 504

Why is stainless steel rust? When the stainless steel tube surface brown rust (point) when, people surprised is not so the May is a problem with the steel. In fact, this is a one-sided view of the lack of understanding of stainless steel. Stainless steel will be rusty under certain conditions. Stainless steel has the ability of resisting corrosion in a medium containing acid, alkali, salt, namely, corrosion resistance. But the size of its ability to resist corrosion steel with its own chemical composition, and mutual status, use conditions and dry clean atmosphere, absolutely excellent corrosion resistance, but will move it to the waterfront area, contains a lot of salt sea fog, steel is good performance. Therefore, not any kind of stainless steel in any environment can not rust corrosion. Stainless steel is formed on the surface of a thin layer and of the fine solid to permeate, to oxidation, and the ability to obtain resistance to corrosion. Once there is a reason, this film has been constantly destroyed, air or liquid will continue to penetrate into the metal and iron atoms continue to analyze, forming a loose oxygen off the ground. A kind of stainless steel can have good corrosion resistance in many media, but in another medium, it may be due to low chemical stability and corrosion. So, a stainless steel is not likely to all the media are corrosion.