Stainless steel definition
Jun 30, 2022
Stainless steel definition: chromium content of more than 12% of the iron base alloy called stainless steel.
The most basic characteristics of stainless steel: it is rust resistance under atmospheric conditions and corrosion resistance in a variety of liquid media.
The meaning of stainless steel
Stainless steel is a general term for stainless steel and acid resistant steel. Stainless steel refers to the atmosphere, steam and water and other weak corrosive medium of steel, and acid resistant steel refers to acid, alkali, salt and other chemical corrosion of the medium of steel.
There is a great difference in alloying degree between stainless steel and acidproof steel. Although stainless steel has rust resistance, but not necessarily acid resistance; Acid - resistant steel is generally rust - resistant.
In the air or chemical corrosion medium can resist corrosion of a high alloy steel, stainless steel is a beautiful surface and good corrosion resistance, do not have to be plated and other surface treatment, and play the inherent surface properties of stainless steel, used in many aspects of a kind of steel, usually called stainless steel.
From the metallographic point of view, because stainless steel contains chromium and the surface of the formation of a very thin chromium film, the film separated from the oxygen in the steel invasion of corrosion resistance. To maintain the corrosion resistance inherent in stainless steel, steel must contain more than 12% chromium.
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