What is Stainless Steel?

Composition of stainless steel
 
Fe + C = steel
Fe + C + Cr = stainless steel
 
Steel is an alloy of iron and carbon.
Stainless steels are steels containing less than 1.2% carbon and at least 10.5% chromium, and other alloying elements. 
 
 
> Reaction of steel and stainless steel in contact with air humidity or water

 

   
The chromium content provides stainless steel with its corrosion resistance, enabling the natural and continuous development of
a chromium oxide surface layer. This oxide, referred to as the “passivation layer”, provides it with lasting protection against 
all types of corrosion. This passivation layer is naturally self-healing when in contact with humidity or water. 
Stainless steels’ corrosion resistance and mechanical properties can be further enhanced by the addition
of other elements such as nickel, molybdenum, titanium, niobium, manganese, etc.

 Would you like to find out more:

> Stainless steel families

> General properties of stainless steel

> Manufacturing process