Stainless steel structural composition

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