GRAND RAPIDS · MI

Precision Electropolishing Services Grand Rapids

Electrochemical surface refinement for stainless and exotic alloys, conformant to ASTM B912-02, ASME BPE, SEMI F19, and ISO 15730.

ISO 15730 ASME BPE ASTM B912-02 1-Business-Day Quotes
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Electropolishing reference image
SEC // METHODS

Electropolishing: Methods Covered

Each method below has its own acceptance criteria and finishing equipment. The intake directs the part to the finishing facility with the appropriate method and accreditation.

ASTM B912-02 Stainless Steel Electropolishing/Passivation

ASTM B912-02 Stainless Steel Electropolishing/Passivation is performed by an accredited finishing facility serving Grand Rapids. Acceptance is verified against the named standard or customer drawing. Surface roughness, flatness, and (where required) passivation are logged on the work ticket and returned with the part.

ASME BPE Electropolishing (Bioprocessing Equipment)

ASME BPE Electropolishing (Bioprocessing Equipment) is performed by an accredited finishing facility serving Grand Rapids. Acceptance is verified against the named standard or customer drawing. Surface roughness, flatness, and (where required) passivation are logged on the work ticket and returned with the part.

SEMI F19 Semiconductor Electropolishing

SEMI F19 Semiconductor Electropolishing is performed by an accredited finishing facility serving Grand Rapids. Acceptance is verified against the named standard or customer drawing. Surface roughness, flatness, and (where required) passivation are logged on the work ticket and returned with the part.

ASTM E1558 Metallographic Electropolishing

ASTM E1558 Metallographic Electropolishing is performed by an accredited finishing facility serving Grand Rapids. Acceptance is verified against the named standard or customer drawing. Surface roughness, flatness, and (where required) passivation are logged on the work ticket and returned with the part.

ISO 15730 Stainless Steel Smoothing And Passivation

ISO 15730 Stainless Steel Smoothing And Passivation is performed by an accredited finishing facility serving Grand Rapids. Acceptance is verified against the named standard or customer drawing. Surface roughness, flatness, and (where required) passivation are logged on the work ticket and returned with the part.

SEC // TECHNIQUES

Additional Techniques and Variants

Specialized variants and adjacent techniques available on engineering review. Click an entry for a short description.

Anodic Polishing (Electrochemical Polishing)

Anodic Polishing (Electrochemical Polishing) is supported as a variant of electropolishing work for Grand Rapids-area parts. Acceptance criteria, abrasive grade, and process control points are confirmed against the customer specification at intake.

Electrolytic Polishing (Metallographic Specimen Prep)

Electrolytic Polishing (Metallographic Specimen Prep) is supported as a variant of electropolishing work for Grand Rapids-area parts. Acceptance criteria, abrasive grade, and process control points are confirmed against the customer specification at intake.

Citric Acid Post-Dip Passivation

Citric Acid Post-Dip Passivation is supported as a variant of electropolishing work for Grand Rapids-area parts. Acceptance criteria, abrasive grade, and process control points are confirmed against the customer specification at intake.

Nitric Acid Post-Dip Passivation

Nitric Acid Post-Dip Passivation is supported as a variant of electropolishing work for Grand Rapids-area parts. Acceptance criteria, abrasive grade, and process control points are confirmed against the customer specification at intake.

SEC // WORKFLOW

How a Grand Rapids Electropolishing Job Runs

01

Intake

Material, geometry, target Ra or finish standard, quantity, and ship-back address captured in the form above.

02

Engineering Review

Method, abrasive grade, and acceptance criteria are confirmed against the spec by the finishing facility before parts ship.

03

Controlled Processing

Electropolishing is performed at an accredited shop with in-process profilometer checks to prevent over-polishing.

04

QA and Return

Final Ra, flatness, and (where specified) passivation are logged. Parts are cleaned and returned to Grand Rapids on a logged carrier.

Service Detail

In-Depth Reference for Grand Rapids

DOC REF: TCS-SVC-LOC
### Industrial Drivers of Electropolishing in Kent County Demand for high-purity metal finishing in the Grand Rapids metropolitan area is concentrated heavily within the region's medical device, aerospace, and advanced food processing sectors. The Gerald R. Ford International Airport industrial corridor, along with manufacturing clusters in nearby Kentwood, Wyoming, and Walker, sustains a dense supply chain requiring ultra-clean, corrosion-resistant surfaces. Notably, medical manufacturing entities such as Medbio and the extensive research facilities along the Medical Mile drive a continuous need for the precise material removal and passivation that electropolishing achieves on stainless steel and cobalt-chrome alloys. Furthermore, the region's prominent office furniture manufacturers, including Steelcase and Haworth, utilize electropolished stainless steel components to ensure durability and aesthetic consistency in architectural elements and high-wear mechanical assemblies. The proximity of major food and beverage processing facilities throughout West Michigan also necessitates electropolishing to eliminate microscopic surface voids where bacteria can harbor, ensuring compliance with strict sanitary mandates. --- ### Technical Standards and Regulatory Compliance The execution of electropolishing for West Michigan industrial facilities is governed by rigid material standards and federal regulatory frameworks. For medical device components manufactured in the Grand Rapids area, compliance with FDA 21 CFR Part 211 current good manufacturing practices (cGMP) is mandatory, requiring surfaces that are completely free of microscopic burrs and hydrogen embrittlement. Process verification is typically conducted in accordance with ASTM B912, which defines the standard specification for the passivation of stainless steel using electropolishing. This standard dictates strict acceptance criteria, including specific chromium-to-iron ratios on the passive layer as measured by Auger Electron Spectroscopy (AES) or X-ray Photoelectron Spectroscopy (XPS). Additionally, components destined for aerospace applications within the Kent County defense supply chain must adhere to SAE AMS2700 standards for passivation, requiring rigorous testing methods such as copper sulfate or high-humidity exposure to verify the complete removal of free iron and surface contaminants.
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