1. What is in stainless steel? The main alloying element in stainless steel is Cr (chromium), only when 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%. In addition, stainless steel also contains Ni, Ti, Mn, N, Nb, Mo, Si, Cu and other elements. 2. Can stainless steel rust? Stainless steel...