The latest passivation symbol of stainless steel is Ct.p.
Stainless steel passivation is the phenomenon that after the metal is treated with oxidizing media, its corrosion rate is significantly reduced than that before the original treatment.
Stainless steel passivation treatment is to make the stainless steel surface react with the passivation agent to form a stable passivation film, so as to protect the stainless steel substrate from oxidation corrosion resulting in rust.