Citric acid passivation is essential for stainless steel parts because it enhances the material’s corrosion resistance. During the manufacturing process, stainless steel can develop a layer of iron oxides and other contaminants on its surface. Citric acid passivation cleans the surface and promotes the formation of a protective chromium-rich oxide layer, which significantly improves the steel’s resistance to rust and corrosion. This process is particularly beneficial in environments where the stainless steel is exposed to harsh conditions, ensuring longevity and reliability of the components.