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Our electropolishing process removes impurities, imperfections, and burrs from the surface of metal objects, replacing traditional mechanical polishing or buffing.

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The electropolishing process, also known as electrochemical polishing, dissolves surface imperfections down to the micron, leaving the surface clean and polished. We carefully formulate our electrolyte chemistries to ensure optimum results for stainless steel finishing.

Metal Spring
Dental instruments

Products Requiring Electropolishing

  • Medical implants and devices
  • Surgical instruments
  • Aerospace components
  • Precision electronic components
  • Light fittings
  • Cookware and utensils
  • Hydraulic fittings
  • Fasteners
  • Wire racks
  • Automotive parts


Results That Matter

Electropolishing removes subsurface contaminants that cause corrosion, providing an enhanced level of passivation (ASTM B912). This process offers these additional benefits.


Benefits of Electropolishing

  • Up to 30x corrosion resistance over passivation
  • No directional lines from abrasive polishing
  • Strips contaminants
  • Smooths surface imperfections
  • Uniform Luster
  • Meets tight tolerances
  • I.D. Polishing


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The reverse plating process often called “electropolishing” is also referred to as electrochemical polishing, anodic polishing, electrolytic polishing, or EP.

The electropolishing process involves an electrical current passing through stainless steel or alloy parts submerged in a sulfuric or phosphoric acid bath mixture to remove a thin metal surface layer.

  • Polishes areas inaccessible by other polishing methods
  • Improves surface reflectivity and brightness
  • Levels micro peaks and valleys for better sterilization (roughly 20-40 micrometers thick)
  • Removes surface iron and enhances the chromium/nickel content
  • Slightly reduces the part size, if necessary
  • Provides a corrosion-resistant surface
  • Removes surface discoloration from heat treating and/or oxidation

Surface Roughness Conversion Chart

Ra (micrometers) Ra (microinches) RMS CLA (N) Rt N Cut-off Length (in) Cut-off Length (mm)
0.025 1 1.1 1 .3 1 0.003 0.08
0.05 2 2.2 2 0.5 2 0.01 0.25
.1 4 4.4 4 0.8 3 0.01 0.25
.2 8 8.8 8 1.2 4 0.01 0.25
0.4 1.6 17.6 16 2.0 5 0.01 0.25
0.8 32 32.5 32 4.0 6 0.03 0.8
1.6 63 64.3 53 8.0 7 0.03 0.8
3.2 125 137.5 125 13 8 0.1 2.5
6.3 250 275 250 25 9 0.1 2.5
12.5 500 550 500 50 10 0.1 2.5
25.0 1000 1100 1000 100 11 0.3 8.0
50.0 2000 2200 2000 200 12 0.3 8.0
Ra = Roughness Average in micrometers or microinches.
RMS = Root Mean Square in microinches.
CLA = Center Line Average in microinches.
Rt = Roughness Total in microns
N = New ISO (grade) scale numbers.
Cut-off Length = Length required for sample.


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Defense contractors rely on our anodizing, laser-marking, descaling, and other services to meet military specifications.

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We offer a range of finishing services for aerospace components and maintain NADCAP certification


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CNC manufacturers rely on our services to complete final finishing.

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We innovate processes in the science and art of finishing precision-engineered pharmaceutical components.

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Our services for finishing water-system components include cryogenic deflashing, passivation, and laser marking.

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Our precision capabilities handle high-volume jobs for automotive OEMs.

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We offer anodizing and laser marking of components and enclosures for computers and audio equipment.

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Our finishing services meet critical tolerances for metal and plastic parts made for consumer electronics.

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Our cleaning and finishing services meet strict regulatory requirements while enhancing performance and longevity.

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Our deburring, deflashing, and other services optimize the operating life of hydraulic equipment.

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Our suite of capabilities delivers precise results producing the highest quality finishes.

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Regular NADCAP reviews and audits ensure compliance with AC7004 requirements for the aircraft, space, and defense Industry.

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