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Clear Anodized Aluminum Extrusions
Clear anodized aluminum extrusions are aluminum profiles that receive a transparent anodic oxide layer through an electrochemical process. Shanghai Huishuo Aluminum Technology Co., Ltd. produces these extrusions with in-house clear anodizing lines across its three production bases in Shanghai, Anhui, and Jiangsu. With over 16 years of aluminum profile customization and processing experience, the company supplies clear anodized extrusions in standard series and custom cross-sections for structural, functional, and architectural applications.
At a Glance
Clear anodizing preserves the natural metallic appearance of aluminum while forming an oxide layer on the surface.
The process supports corrosion resistance, wear resistance, and surface hardness without adding pigment or dye.
Extrusions can be supplied in standard lengths or machined to drawing with drilling, milling, tapping, and bending.
Huishuo Aluminum operates oxidation lines in-house, allowing control over anodizing thickness, sealing, and batch consistency.
Product Overview
Clear anodized aluminum extrusions are made from aluminum alloys such as 6063, 6005, and 6061. The profile is extruded to the required cross-section, cut to length, and then anodized in a clear bath. The resulting oxide layer is transparent and integrated with the aluminum surface rather than applied as a coating, so it does not peel or flake under normal use conditions.
Because no dye is used, the appearance is determined by the base alloy, extrusion surface quality, and anodizing parameters. This makes process control important for consistent appearance across batches. Huishuo Aluminum manages extrusion, anodizing, and sealing within its own facilities, which supports traceability from raw profile to finished part.
Clear anodized extrusions are commonly used where a metallic finish is required alongside surface protection. They can be further machined before or after anodizing depending on the function of the machined features.
Core Advantages
Product Characteristics
| Material | Aluminum alloy 6063, 6005, 6061, or specified grade |
| Surface Finish | Clear anodized, with optional sealing |
| Anodizing Thickness | Controllable according to application requirements |
| Appearance | Transparent oxide layer with natural metallic tone |
| Series | 20, 30, 40, 45, 60, 80, and other standard series |
| Length | Custom cut to specified dimensions |
| Machining | Drilling, milling, cutting, tapping, bending |
| Tolerance | Controllable according to drawing requirements |
Application Scenarios
Common Questions and Solutions
What is the difference between clear anodized and mill finish extrusions?
Mill finish extrusions have the natural surface produced during extrusion, without an added oxide layer. Clear anodized extrusions receive an electrochemical oxide layer that is transparent. The anodized surface generally offers different wear and corrosion behavior compared with mill finish, and the choice depends on the application environment.
Can the anodizing thickness be specified?
Yes. Huishuo Aluminum controls anodizing thickness according to customer requirements. Thickness affects corrosion resistance, wear resistance, and surface hardness. The appropriate thickness is determined by the application conditions and expected service environment.
Does clear anodizing change the dimensions of the extrusion?
The anodic oxide layer grows partly into the aluminum surface and partly outward. The dimensional change is small and is considered during production when tight tolerances apply. Huishuo Aluminum reviews tolerance requirements with the customer during order processing.
Can clear anodized extrusions be machined after anodizing?
Machining after anodizing removes the oxide layer at the cut or machined area, exposing the aluminum underneath. In many cases, machining is performed before anodizing so the finished surface remains intact. Huishuo Aluminum reviews the sequence of machining and anodizing with the customer during order processing.
Do you produce custom cross-sections in clear anodized finish?
Yes. Huishuo Aluminum provides custom mold making for irregular profiles and applies clear anodizing after extrusion. Customers can supply drawings or samples for evaluation, and the company handles mold design, extrusion, anodizing, and optional CNC machining.
What information is needed to quote a clear anodized extrusion order?
Useful information includes the cross-section drawing or series, material grade, length, quantity, anodizing thickness requirements, machining operations, and tolerance requirements. Providing these details allows Huishuo Aluminum to review feasibility and prepare a quotation.
Precautions for Use
Store clear anodized aluminum extrusions in a dry, ventilated area. Avoid contact with sharp objects that may scratch the anodized surface. When cutting or machining, follow safety procedures and use appropriate tools. For load-bearing structures, verify the structural design with qualified personnel. Clean with mild detergent and a soft cloth. Avoid abrasive cleaners, strong acids, and strong alkalis on anodized surfaces. Handle extrusions with care during transport and assembly to reduce surface damage.
