Stainless steel is the basis of common carbon steel, adding a group of chromium mass fraction (Wcr) greater than 12% alloying elements of the steel, which under the action of air to maintain the metallic luster, that is, has no rust properties. This is because a certain amount of chromium alloying elements in this type of steel, to make the surface layer of the steel is not dissolved in the medium of certain solid oxide film (passivation film), the metal with the ambient medium isolated without chemical effect. In these steels, some addition to containing more chromium (Cr), but also add more matching other alloying elements, such as nickel (Ni), so that in the air, water, vapor, have a very good chemical stability, and in many kinds of acid, alkali, salt solution also has sufficient stability, even at high or low temperature environment, can maintain the advantages of corrosion resistance. Intergranular corrosion so that the binding force between grains weakened heat exchanger coil, severe mechanical strength can completely lost. For example, suffer from this corrosive stainless steel, the surface looks very shiny stainless steel tube coil, but can not afford to gently tap it broken into fine particles. Due to intergranular corrosion is not easy to check the coil manufacturers, so suddenly broken equipment ting ten people, it's great danger. Between materials with high corrosion susceptibility of stainless steel, nickel-based alloys, aluminum alloys, magnesium alloys are crystalline. Use or welding process can cause intergranular corrosion problems in the heating situation. To intergranular corrosion of origin under the combined effect of stress and the media, can induce between stainless steel, aluminum and other stress corrosion, intergranular corrosion so sometimes stress corrosion pilot. Cooling coil, coil, stainless steel coil manufacturers in Shandong by Shandong Jinding Stainless Steel Pipe Co., Ltd. Shandong Jinding Stainless Steel Pipe Co., Ltd. (www.ss304L.com) (www.ss304L.com) strong, credible, in Dezhou steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinding Pipe into the brilliant and you work for a better future! You can also access (www.ss304L.com/supply_details_48175490.html), for more information about the company.