What's Stainless Steel?

Stainless steel is short for stainless acid-resistant steel
Resistant to air, steam, water and other weak corrosive media or have stainless steel is called stainless steel; and will be resistant to chemical corrosive media (acid, alkali, salt and other chemical impregnation) corrosion of the steel is called acid-resistant steel.
Stainless steel as a kind of steel, in life everywhere. Large to building bridges, mechanical equipment, automotive appliances, small to knife and fork tools, cups and pens, seat decoration, almost any place can see the figure of stainless steel.
Stainless steel is a large variety of steel, belonging to the high-alloy steel. The so-called high and low alloy steel, is to the alloy content of steel for the distinction; alloy content of less than 5% for low alloy steel, alloy content greater than or equal to 10% for high alloy steel, between 5% -10% for the middle alloy steel!

Stainless steel in the alloy to chromium Cr-based, and according to other components inside the nickel Ni. carbon C and other elements of different content than the formation of a variety of uses and properties of stainless steel varieties. Common austenitic stainless steel is chromium-nickel alloy Cr-Ni, generally 18cr8ni for the basic, that is, containing about 18% of Cr and 8% of Ni, plus other elements to form a variety of varieties of uses. There are martensitic, ferritic stainless steel, these two types of stainless steel does not contain ni nickel components.

Stainless steel characteristics:
1. Has very good corrosion resistance
2. Very good corrosion resistance in air and chemical media
3. Very high resistance to oxidation, high strength, suitable for thin sheet use.
4. Good weldability, room temperature processing, clean and beautiful surface, suitable for maintenance.

Stainless steel is often classified according to the state of organization: martensitic steel, ferrite steel, austenitic steel, austenitic - ferrite (duplex) stainless steel and precipitation hardening stainless steel. In addition, according to the composition can be divided into: chromium stainless steel, chromium-nickel stainless steel and chromium-manganese-nitrogen stainless steel. There are also specialized stainless steels for pressure vessels.