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A: With the scientific and technological progress, the people’s living standards improving, many people start to know the stainless steel jewelry. Its appearance is smooth, beautiful, not easy to pollution, do not rust. So it is deeply to get the people favor. Why the stainless steel resistant to oxidation in the air, and then acid corrosion?  Because it is besides iron, the stainless steel also contains a strong corrosion resistance of chromium and nickel. The content of chromium is 13% or more generally, the content of nickel is about 10%. For example, there is a component of stainless steel in addition to iron, other elements are as follows:

C (C) ≤ 0.14%; Si (silicon) ≤ 0.80%; Mn (manganese) ≤ 2.00%;
P (P) ≤ 0.035%; S (S) ≤ 0.03%.