What Is Stainless Steel Electropolishing?

Machining stainless steel, especially 300 and 400 series stainless steel, can leave parts with a wide array of imperfections: microburrs, microcracks, free iron, stains, heat tint, oxide scale, and other surface defects that can compromise the fit, finish, function, and durability of stainless steel parts.

Electropolishing—also known as electrochemical polishing, electrofinishing, electolytic polishing, and e polishing—eliminates stainless steel surface defects by removing a microscopically precise layer of surface material, to tolerances as low as +/-.0001″, depending on the alloy, leaving a lasting bright finish. This degree of precision and consistency, along with the ability to remove a variety of surface imperfections in one process, is why electropolishing is so often specified for critical metal parts – with 30 times more corrosion resistance than passivation.

Electropolishing also eliminates the need for mechanical metal finishing processes like hand deburring, tumbling, pickling, and cleaning.

Electropolishing vs. Passivation Technical Guide

Electropolishing vs. Passivation Technical Guide
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How Electropolishing Works

Electropolishing of Stainless Steel Before & After

Electropolishing Before & After

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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.

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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.

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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.

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Automotive

Automotive

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

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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.

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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.

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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.

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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.

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Electropolishing Blog

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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.