Iron (Fe) : is the basic of stainless steel metal elements
Chromium (Cr) : is the one of the basic elements of is to maintain the corrosion resistance of stainless steel, chromium content can improve the steel passivation membrane repair ability, general (must be at least 12% chromium content in stainless steel;
Carbon (C) : it's strong austenitic formation elements, can significantly improve the strength of the steel, has an adverse effect on the corrosion resistance of carbon also;
Nickel (Ni) : austenitic formation is the main element, can slow the steel corrosion phenomena and grew up in grain by heating;
Molybdenum (Mo) : is the carbide forming elements, the formation of the carbide is very stable, can prevent the austenitic grain growth when heated, sensitivity, reduce the steel overheating and molybdenum elements can make the passivation film is more compact and firm, thus effectively improve the Cl - corrosion resistance of stainless steel;
Niobium and titanium (Nb, Ti) : it's strong carbide forming elements, can improve the resistance to intergranular corrosion of steel.But the titanium carbide have an adverse effect on the surface quality of stainless steel, so higher requirements on the surface of stainless steel in general by niobium was added to improve the performance.
Nitrogen (N) : it's strong austenite formed elements, can significantly increase the strength of the steel.But the influence of cracking in the limitation of stainless steel, so the stamping purpose we will strictly control the nitrogen content in stainless steel.
Phosphorus, sulfur, (P, S) : is the harmful elements in stainless steel, corrosion resistance of stainless steel and stamping will produce adverse effect.