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What role does chromium play in stainless steel?

Time:2018-09-13 18:32Author:jawaysteel
When stainless steel sheets are used and produced, the importance of nickel for stainless steel sheets is also mentioned. The reason for increasing nickel is to form austenite crystal structure, which in this respect can improve, for example, plasticity. The properties of stainless steel plates such as weldability and toughness, but for now, what we are talking about is not nickel, but another element - chromium.
In actual production, chrome is actually an important part of stainless steel plates, and as far as it is concerned, there is no stainless steel containing no chrome, so since chrome is an indispensable part of stainless steel plates, What kind of important role we have reached requires special attention.
Chromium is the most basic alloying element in stainless steel plates, and its content is generally above 13%. Of course, in this respect, whether it is 201 stainless steel or 304 stainless steel, it will contain this element. Of course, when it is said that the reason is relatively simple, chromium has an effect on the stainless steel structure, and it can form a metal compound such as Cr3C with carbon, and the metal compound has relatively high strength and hardness.
When chromium is directly dispersed in a granular form on a metal substrate, in this respect, to a large extent, it can greatly improve the strength, corrosion resistance, wear resistance, etc. of the stainless steel plate. . And to mention the main role of chromium, it is to a large extent to improve the corrosion resistance of stainless steel plates.
In the oxidizing medium, a solid and dense chromium oxide is formed on the surface of the stainless steel plate, and the stainless steel plate is also protected. Chromium itself will also cooperate with nickel. In this case, it will inevitably form a single-phase austenite structure, which will give the stainless steel plate good corrosion resistance and good toughness and strength.

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