Main components of stainless steel: generally contain high-quality metal elements such as chromium (Cr), nickel (Ni), molybdenum (Mo), and titanium (Ti). Common stainless steel: chromium stainless steel, containing more than 12% Cr; chrome-nickel stainless steel, containing Cr≥18%, containing Ni≥12%.
Classification from the metallographic structure of stainless steel: there are austenitic stainless steels, such as: 1Cr18Ni9Ti, 1Cr18Ni11Nb, Cr18Mn8Ni5. Martensitic stainless steel, such as: Cr17, Cr28, etc. Generally called non-magnetic stainless steel and magnetic stainless steel.

