Various elements of stainless steel performance impact

There are more than 100 known chemical element, in that is commonly used in industrial steel material can meet about twenty kinds of chemical elements. For people in a long struggle with the corrosion phenomenon formed by the practice of the special steel stainless steel series, the most commonly used element has a dozen, in addition to the basic elements in iron steel, with the largest elements affect on the performance of the stainless steel is: carbon, chromium, nickel, manganese, silicon and molybdenum, titanium, niobium, titanium, manganese, nitrogen, copper, cobalt, etc. These elements other than carbon, silicon, nitrogen, are chemical elements in the periodic table is located in the transition of the element. Stainless steel in industrial application are actually exist several or even dozens of elements at the same time, when several elements coexist in stainless steel which a unity, their impact is much more complicated than single exists, because in this case not only to consider the elements themselves, and pay attention to the mutual influence between them, so the organization of the stainless steel is determined by the influence of various elements combined. 1) The influence of various elements on the performance of the stainless steel and organization the role and function of chromium in stainless steel decided: determine gender of stainless steel is only one element, this is chrome, each stainless steel containing a certain amount of chromium. To date, there has been no do not contain chromium stainless steel. Chromium is decided the main elements of the stainless steel performance, the fundamental reason is that after adding chromium alloy elements into the steel, make its internal contradiction movement to the aspects of development in the resistance to corrosion damage. This change can be illustrated from the following aspects: (1) chromium chromium increase the electrode potential of iron base solid solution (2) electronic absorption of iron iron passivation passivation is caused by metal and alloy anode reaction is prevented and the phenomenon of corrosion resistance was improved. Many composition of metal and alloy passivation theory, mainly include thin film theory, adsorption on the electronic structure theory.