Passivation
Passivation chemically removes free iron from stainless steel, restoring and maximizing its natural corrosion resistance. Huaxiao delivers passivation as part of our ISO 9001:2015 certified Special Process capabilities — from rapid prototyping to high-volume production, with full dimensional inspection and material certification on every order.
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What Is Passivation?
Passivation is an electrochemical finish that grows a controlled oxide layer on metal, boosting corrosion resistance, hardness and appearance. Huaxiao’s Passivation service delivers consistent, inspectable finishes on aluminum and other alloys.
Unlike paint, the anodic layer is integral to the substrate — it will not chip or peel. We control thickness, color and sealing to your spec, and pair the process with masking, etching and laser marking.
Our Passivation Capabilities
Backed by 15+ years of precision manufacturing experience and a vertically integrated workshop:
How Passivation Works
From drawing to finished part, our Passivation process follows four controlled steps:
Technical Specifications
| Parameter | Specification |
|---|---|
| Heat treatment | Quenching, Tempering, Carburizing, Nitriding, Induction, Annealing |
| Surface coatings | Zinc, Nickel, Chrome, Gold, Anodizing, Electroless Nickel, DLC, PVD, Black Oxide |
| Grinding precision | Flatness ±0.002mm, Roundness ±0.001mm, Ra 0.1µm |
| EDM accuracy | ±0.005mm, Ra 0.2µm |
| Hardness range | HRC 25 – HRC 65 (post heat treatment) |
| Materials | Tool Steels, Stainless, Aluminum, Titanium, Copper, Carbide |
| Certification | ISO 9001:2015, RoHS, REACH |
| MOQ | 1 pc prototype / 100 pcs batch |
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Materials We Work With
We process a broad range of metals and alloys to match your mechanical, thermal and corrosion requirements:
- Aluminum (6061, 7075) — The primary anodizing substrate; Type II and III.
- Titanium — Color anodizing for medical and consumer parts.
- Magnesium — Controlled conversion coatings for corrosion protection.
- Steel (passivation) — Citric or nitric passivation restores corrosion resistance.
- Zinc & Plated Parts — Post-plate sealing and chromate conversion.
Industries & Applications
Passivation is widely used across demanding industries. Typical applications include:
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Why Choose Huaxiao for Passivation
- We manufacture AND finish in-house — one quality chain, no handoffs.
- Wide process range from heat treat to DLC/PVD thin-film coatings.
- ISO 9001:2015 certified with material certs and inspection.
- Type II and Type III (hard coat) capabilities in-house.
- Tight thickness and color control with sealed, durable finishes.
- Masking and laser marking integrated into the same flow.
Choosing the Right Passivation Partner
Anodizing quality depends on process control, sealing and consistent thickness — not just a bath. Huaxiao Parts provides custom anodizing services including Type II and hard-coat Type III, with tight control of coating thickness, color and sealing for durable, corrosion-resistant finishes. Masking, etching and laser marking are integrated, so your anodized aluminum parts arrive ready for assembly with full appearance and thickness inspection.
What to consider when sourcing Passivation:
- Material & alloy — Pick the grade that matches strength, weight and corrosion needs for your Passivation parts.
- Production volume — We support 1-piece prototypes through 100,000+ production runs, amortizing tooling efficiently.
- Tolerance & inspection — Specify critical dimensions; CMM reports and material certs are available on request.
- Secondary operations — Machining, finishing and assembly are handled in one continuous flow.
- Certifications — ISO 9001:2015 with full traceability and inspection reports on every lot.
Why Huaxiao Parts — Our Manufacturing Strength
Huaxiao Parts is a vertically integrated precision manufacturer trusted by automotive, medical, industrial and robotics customers worldwide. We combine broad process capability with disciplined quality so you can consolidate suppliers without compromising control.
Huaxiao Parts — Your One-Stop Metal Parts Manufacturer
Huaxiao Parts is a professional metal parts manufacturer and your one-stop partner for metal product services. From prototyping to high-volume production, we integrate CNC machining, metal casting, hot forging, powder metallurgy, sheet-metal fabrication, surface finishing and assembly under one roof — so you can consolidate suppliers, cut lead times and keep full quality control. As a trusted custom metal components supplier, we help buyers worldwide turn drawings into finished, inspected parts with end-to-end metal manufacturing.
Ready to consolidate your supply chain? Send us your drawings, quantity and requirements — our engineering team responds within 24 hours with a detailed quote.
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Frequently Asked Questions
Send us your drawings, quantity and requirements. Our engineering team responds within 24 hours with a detailed quote.
