Citric passivation is a fast, cost-effective and environmentally friendly method of increasing corrosion resistance for stainless steel parts that is increasingly in demand in aerospace and manufacturers.
Stainless steel is naturally resistant to corrosion but machining introduces free iron that can create initiation sites for corrosion that will continue to spread unless it is removed. Citric passivation removes free iron contamination.
Stainless steel parts are immersed into an oxidizing bath consisting of naturally occurring acids found in oranges and other citrus fruits, which is biodegradable and more environmentally friendly than nitric passivation. The citric acid bath creates a thin yet dense, protective oxide layer that makes stainless steel parts corrosion-resistant and clean once again.
Our citric passivation services conform to ASTM A967, ASTM A380, AMS 2700, and QQ-P-35C.
Only electropolishing removes burrs, micro cracks and other contaminants by dissolving 0.0005″ to .001” of the “skin” within a tolerance of +/- 0.0002” for stainless steel as well as titanium, Nitinol and a wide variety of alloys. Electropolishing eliminates the need for additional metal finishing processes like hand deburring, tumbling, cleaning, and even passivation.
If your spec calls for passivation but you’d like to learn more about the superior results electropolishing provides, we can electropolish a sample of your parts for no charge and facilitate updates to your engineering change order (ECO) process.
Whether electropolishing or passivation is the right process for you, we offer the highest-quality finishing services. Our state-of-the-art 45,000 SQFT facility operates 3 shifts, 5 days a week. We offer expedited service, can handle parts of any size, and provide customized processing for every part, including custom racking. Start with a sample finish of your part for free.
The largest design and contract manufacturing show in North America, the Schaumburg Design-2-Part Show is the most efficient place to meet hundreds of high-quality American suppliers of custom parts, stock parts, and manufacturing services.
Booth #353 | Schaumburg Convention Center | Schaumburg, IL
SpringWorld provides an opportunity to network with other spring manufacturers, wire formers and more. See the newest technology available to improve your productivity, quality, and service.
Donald E. Stephens Convention Center | Rosemont, IL
The MPO Summit has provided the medtech industry with an opportunity for interactive networking and educational presentations for outsourcing for medical device manufacturing for over 15 years.
Grand America Hotel | Salt Lake City, UT