Structural composition of stainless steel

 

The corrosion resistance of stainless steel decreases with the increase of carbon content. Therefore, the carbon content of most stainless steels is low, not exceeding 1.2% at most. The ωc (carbon content) of some steels is even lower than 0.03% (such as 00Cr12). The main alloying element in stainless steel is Cr (chromium). Only when the Cr content reaches a certain value, the steel is corrosion-resistant. Therefore, the Cr (chromium) content of stainless steel is generally at least 10.5%. Stainless steel also contains Ni, Ti, Mn, N, Nb, Mo, Si, Cu and other elements.