Why Is Passivation Necessary?

Benefits of Passivation

When stainless steel parts are manufactured, they can be left with free iron and other foreign material embedded in the surface. This foreign material enables corrosion over time, shortening the lifespan of the part. Passivation is necessary to remove these embedded contaminants and return the part to its original corrosion specifications.

Though passivation can improve the corrosion resistance of certain stainless steel alloys, it does not eliminate imperfections like micro cracks, burrs, heat tint and oxide scale. If imperfections like these are affecting your part’s performance, it may require a more aggressive finishing method, like electropolishing. Electropolishing can be performed on  all grades of stainless steel  and instead of removing only  surface contaminants like free iron, it removes micro burrs, micro cracks, pits and other imperfections, as well. While passivation may be necessary for returning parts to their corrosion specifications, electropolishing can give those same parts 30 times more corrosion resistance.

Contact us to learn more about electropolishing and passivation

quote
Request a QuoteDiscover the Able Electropolishing Difference »
sample
Try Electropolishing for FreeSend Us Your Part to Process for Free »

Electropolishing Blog

Electropolishing for Finishing Rescue Device Parts

When a marine and rescue hardware manufacturer started developing parts for rescue harnesses in 2018, they knew they needed to find a metal finishing partner with uncompromising standards and no tolerance for error: lives, literally, hang on the line.

Electropolishing for Food Processing Blades

From exposure to salt and acids and near constant moisture, industrial food processing blades must stand up to a wide variety of potentially corrosive ingredients without losing their edge. Such blades must also meet strict requirements regarding quality and cleanliness…

Grow Your Reach, Shrink Lead Time with Trusted Supplier Network

The process of finishing critical metal parts for our clients in industries that include aerospace, medical device design, semiconductor manufacturing, pharmaceutical production – and many others – is incredibly precise. Success can be measured in ten-thousandths of an inch.

What Can and Can’t Be Passivated?

Passivation is a widely used chemical finishing process to remove contaminants and improve the corrosion resistance of metal parts, including stainless steel and alloys like Nitinol and titanium. While passivation can be effective for many parts, for certain parts and…