Aluminum 6063 is one of the most widely used extrusion alloys in the world. Known for its excellent surface finish, high corrosion resistance, and outstanding formability, it is commonly referred to as the “architectural aluminum alloy.
Architectural & Structural Profiles
Many architectural components are made from 6063 because the alloy extrudes beautifully and provides a clean, attractive surface after finishing. It is used for window frames, door frames, curtain walls, railings, partitions, and modular construction systems. Its corrosion resistance makes it suitable for both indoor and outdoor environments.
Heat Sinks & Electronic Housings
The alloy’s excellent thermal conductivity and smooth surface finish make it a strong choice for heat sinks, electronic housings, LED frames, and cooling components. It supports high-precision fins and profile shapes that require both structural stability and ease of machining.
Automotive Trim and Lightweight Components
Automotive interior and exterior trim frequently use 6063 because it combines strength with lightweight performance. It is commonly used for roof rails, exterior trim accents, brackets, decorative strips, and structural sections that need excellent anodizing quality.
Aerospace Interior and Non-Critical Components
In aerospace, 6063 is used for interior structures, seat frames, lightweight brackets, panel systems, and non-critical components where surface finish and weight reduction are essential.
Custom Extrusion Profiles for Industrial Use
6063 is ideal for custom extrusion designs used in manufacturing machines, conveyor systems, protective enclosures, workstations, modular frames, and robotic automation structures. XC Machining routinely machines these extruded profiles to add precision features, mounting holes, pockets, and tight-tolerance fits.
Furniture, Consumer Goods & Decorative Applications
Because 6063 anodizes to an elegant, smooth finish, it is used for lighting fixtures, display frames, furniture structures, base stands, handles, and high-end decorative aluminum parts. The material supports both functional and aesthetic requirements.
What Surface Finishes Are Available for Aluminum 6063?
One of the biggest advantages of Aluminum 6063 is its ability to achieve exceptional surface finishes. Thanks to its ideal balance of magnesium and silicon, it delivers a smoother and more refined finish compared to many other aluminum alloys.
As Machined Surface Finish
Aluminum 6063 delivers a clean, visually smooth surface when CNC machined. Tool marks are minimal due to the alloy’s soft cutting behavior, making the as-machined finish ideal for internal components, prototypes, and low-cost parts where aesthetics are not a priority.
Anodizing (Type II and Type III)
6063 is known for having one of the best anodizing responses among all aluminum alloys. Type II anodizing produces decorative, corrosion-resistant surfaces in colors like silver, black, champagne, and bronze. Type III hard anodizing provides a harder, more wear-resistant surface suitable for industrial applications. XC Machining ensures consistent anodizing quality by preparing surfaces correctly before processing.
Polishing for Satin or Mirror Finishes
The alloy’s fine grain structure makes it easy to polish, allowing the production of satin, brushed, or mirror-like finishes. Polished 6063 parts are often used in decorative, consumer, or high-end structural applications. XC Machining uses progressive polishing techniques to achieve uniform gloss and clarity.
Sandblasting / Bead Blasting for Matte Texture
Blasting produces a uniform matte texture that removes light machining marks and prepares surfaces for anodizing or painting. Sandblasted 6063 components have a premium aesthetic and are commonly used in electronics housings, architectural components, and consumer products.
Powder Coating for Durable, Colored Surfaces
6063 accepts powder coating extremely well due to its clean chemistry. Powder-coated parts provide excellent wear resistance and strong color consistency. XC Machining uses industrial-grade powder coatings for applications requiring durability, branding, or outdoor performance.
Brushing for a Linear Textured Finish
Brushed aluminum finishes are popular in electronics, appliances, and decorative components. 6063 responds very well to brushing, creating a uniform grain pattern that enhances aesthetics before anodizing or coating.
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