Passivation Services for Custom Drone CNC Parts

Customization Options

Protecting Critical UAV Components with Wear-Resistant Coatings and Exact Tolerances.

Enhanced Corrosion Protection

Passivation increases corrosion resistance by over 100%.
Complete Contaminant Removal

Our passivation removes 99% of surface iron contaminants.
Extended Component Lifespan

Achieve a 2x longer lifespan with passivation.
Oxide Layer Restoration

Restore the chrome-oxide layer through professional passivation.

Passivation protects stainless steel fasteners, motor shafts, and gimbal bearings from oxidation while maintaining critical dimensions for drone assembly.

Our passivation service eliminates free iron and prevents flash rust on CNC components. We provide detailed citric or nitric acid treatments that ensure maximum corrosion resistance without affecting tight tolerances—a critical requirement for engineers designing high-reliability aerospace hardware.

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Advanced Specs & Options

Rust Prevention Standards

Our passivation service meets ASTM A967 standards, guaranteeing your drone components survive harsh, moisture-heavy flight environments.

Precision Contaminant Cleaning

We remove microscopic iron and shop debris, preventing localized pitting and ensuring a pristine, rust-free surface for every part.

Maintenance of Tolerances

Our chemical passivation adds zero thickness, ensuring your high-precision motor shafts and bearings maintain their exact design clearances.

Grade-Specific Acid Selection

We tailor our citric or nitric acid baths to your specific alloy, protecting the metal’s finish and structural integrity.

Process Control & Quality Assurance

Water Immersion Testing

We check for rust after distilled water soaking.
Copper Sulfate Verification

We detect free iron via chemical surface reactions.
High Humidity Exposure

Parts are tested in 100% humidity for oxidation.
Visual Surface Inspection

We confirm a clean, uniform, and pit-free finish.

Frequently Asked Questions

How do you ensure the process won't etch or dull precision surfaces?

We carefully select between citric and nitric acid based on your specific alloy and surface finish requirements to ensure effective passivation without any dimensional loss or surface etching.

Does your passivation process meet aerospace and military standards?

Yes, our facility is fully compliant with ASTM A380, ASTM A967, and AMS 2700, providing the documented certification required for high-spec drone and aerospace projects.

Can you passivate small, complex internal geometries or blind holes?

We utilize ultrasonic agitation during the passivation bath to ensure the chemical solution reaches all internal threads and complex internal channels, removing trapped contaminants.

How do you verify that the passive layer has successfully formed?

We perform standardized tests, such as Copper Sulfate or Water Immersion testing, to confirm the absence of free iron and the integrity of the protective oxide layer.

What is the difference between your Citric and Nitric acid options?

Citric acid is an eco-friendly, highly effective choice for most grades, while Nitric acid is available for specialized alloys that require a more aggressive oxidation process for passivation.

How do you handle parts made from multiple different materials?

Since passivation can damage non-stainless materials, we provide expert masking or perform the service at the individual component level before final assembly to protect sensitive inserts.