Stainless steel definition: The iron based alloy containing more than 12% BAI chromium DU is called ZHI stainless steel DAO.
The most basic characteristic of stainless steel is its resistance to rust IN atmospheric conditions and corrosion resistance in various liquid media.
Meaning of stainless steel
Stainless steel is the general name of stainless steel and acid-resistant steel. Stainless steel is atmospheric, steam and water and other weak corrosive medium of steel, and acid-resistant steel is acid, alkali, salt and other chemical corrosive medium of steel.
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There is a great difference in alloying degree between stainless steel and acid-resistant steel. Although stainless steel has rust, but not necessarily acid resistance; And acid - resistant steel is generally rust - free.
In the air or chemical corrosion medium can resist corrosion of a high alloy steel, stainless steel is a beautiful surface and corrosion resistance performance is good, do not have to undergo plating color and other surface treatment, and play the inherent surface performance of stainless steel, used in a variety of steel, usually called stainless steel.
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From the perspective of metallography, because stainless steel contains chromium, the surface forms a very thin chromium film, which is separated from the oxygen in the steel to act as a corrosion resistant. To maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 12% chromium.
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