Definition of stainless steel: Iron-based alloys containing more than 12 per cent chromium are called stainless steel.
The most basic property of stainless steel is its resistance to rust under atmospheric conditions and corrosion resistance in various liquid media. (Not easy to rust)
Meaning of stainless steel: Stainless steel is a general term for stainless steel and acid-resistant steel. Stainless steel refers to the steel resistant to weak corrosive media such as atmosphere, steam and water, while acid-resistant steel refers to the steel resistant to corrosion of chemical impregnating media such as acids, alkalis and salts.
Stainless steel and acid-resistant steel in the degree of alloying there is a big difference. Although stainless steel is stainless, but not necessarily acid-resistant; acid-resistant steel generally have stainless.
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 go through the surface treatment such as colour plating, and play a stainless steel inherent surface properties, used in a variety of aspects of steel, usually called stainless steel.
From the metallurgical point of view, because stainless steel contains chromium and the surface of the formation of a very thin film of chromium, this film is separated from the steel invasion of oxygen to play a role in corrosion resistance. In order to maintain the corrosion resistance inherent in stainless steel, steel must contain more than 12 per cent chromium.
