What Is Pickling of Stainless Steel?

Though passivation can improve the corrosion resistance of stainless steel parts, manufacturing leaves behind many imperfections that passivation does not eliminate. The process does not, for example, remove heat tint or oxide scale created by welding and heat treating. In the past, this has been addressed by a supplementary chemical treatment known as “pickling.”

How Stainless Steel Pickling Works

Pickling is a pre-passivation process of treating stainless steel parts with an acid solution, typically hydrochloric or sulfuric acid, which can remove oxide scale and heat tint while dissolving steel flecks embedded in the part. But pickling is a very imprecise process, with many drawbacks, including strict EPA regulations around its use. It is also very difficult to create consistent results as the acid solution degrades with age and the amount of surface material removed can vary greatly.

Electropolishing vs. Passivation vs. Pickling Guide

Electropolishing vs. Passivation vs. Pickling Guide
Download the Guide

Electropolishing Alternative

Over the years, electropolishing has emerged as a preferred alternative and a one-stop method for removing surface imperfections, removing a microscopically precise layer of surface material and leaving parts stronger, ultraclean, and resistant to both corrosion and pathogens. Unlike pickling, electropolishing is effective at improving the finish on a wide variety of metals, alloys and specialty alloys.
Electropolishing Before & After

Electropolishing Before & After

Contact us to learn more about electropolishing

Medical Device Manufacturing

Medical Device Manufacturing

From implantable devices to surgical instruments, electropolishing is a single-process treatment that results in biocompatible, safe and ultra clean parts.

Learn More  

Aerospace

Aerospace

We offer aerospace vendors and original equipment manufacturers our signature metal finishing services to increase fatigue-resistance for their metal parts, rendering them capable of withstanding the stress and corrosion that comes with long-term use.

Learn More  

Pharmaceutical

Pharmaceutical

Our strict adherence to industry standards ensures that pharmaceutical components are electropolished in accordance with ASTM B912 and ASME BPE specifications. These products are clean and smooth, corrosion resistant and contaminant free.

Learn More  

Automotive

Automotive

Corrosion resistance and microfinish improvement are essential for critical automotive parts, making electropolishing an increasingly beneficial option for automakers.

Learn More  

Consumer Appliance

Consumer Appliance

Our metal finishing services help increase corrosion resistance for these parts, and by removing the outermost layer of metal withelectropolishing the durability and longevity of these appliance components is increased.

Learn More  

Food & Beverage

Food & Beverage

Electropolishing materials for this industry eliminates the buildup of bacterial biofilms, as well as keeping the equipment free of contaminants like Salmonella. Electropolishing delivers the level of sanitation required by a number of regulatory agencies.

Learn More  

Hydraulics & Pneumatics

Hydraulics & Pneumatics

From robotics to mobile equipment, the uses of electropolishing in the hydraulics and pneumatics industry are many. By helping prevent premature part failure, electropolishing reduces downtime and increases the life cycle of these components.

Learn More  

Electronics

Electronics

Improving conductivity and performance is just one benefit electropolishing offers for electronics parts. The surface finish is improved by as much as 50%, removing imperfections from the material without material removal.

Learn More  

Electropolishing Blog

High-Quality Passivation for Medical Parts

Passivation is an essential finishing process enhancing the durability and efficacy of metal parts in industries with no room for error, such as medical device manufacturing. Critical to ensuring that medical devices perform reliably over time, passivation uses a specialized…

Quality Assurance in the Semiconductor Industry

Among the most demanding surface finish requirements of any industry, the specifications, standards and quality assurance processes that cover components used by the semiconductor industry impose metal finishing criteria that leave nothing to chance.

Optimizing Aerospace Components with Passivation

Crafting aerospace components demands precision down to the microscopic level. Through meticulous removal of contaminants and enhancement of corrosion resistance, metal finishing techniques such as passivation help ensure part performance and longevity.

70 Years of Electropolishing Innovation & Excellence

In the heart of a post-World War II industrial boom, a self-taught chemist and visionary, Zenon Pokvitis, laid the foundation for what would become the world’s largest electropolishing specialist — Able Electropolishing.