Is passivation necessary?
Although chemical passivation is not considered the most efficient means of finishing material, it’s not always possible to do it through electropolishing. Items that cannot be taken offsite or are too large to use an electrical current for polishing are clear examples of when chemical passivation is the best option.
If it suits your project’s needs both in economical and practical terms, then passivation may not be necessary when electropolishing is used instead. Ultimately, passivation should be paramount for metal parts or devices vulnerable to corrosion.