Comparing Different Types of Aluminium Extruded Sections

Comparing Different Types of Aluminum Extruded Sections

Aluminum extruded sections are widely used in various industries due to their lightweight, strength, and corrosion resistance. They are produced by forcing molten aluminum through a shaping die to create a specific cross-sectional shape. Understanding the different types of aluminum extruded sections is crucial for selecting the most suitable material for a particular application.

Alloy Composition

Different aluminum alloys are used for extrusion, each with unique properties. Common alloys include:

6000 series: Medium-strength alloys with excellent corrosion resistance.

7000 series: High-strength alloys suitable for structural applications.

8000 series: Very high-strength alloys with low ductility.

Shapes

Extruded sections can be produced in a wide range of shapes, including:

Round

Square

Rectangular

Hollow

T-shaped

I-shaped

U-shaped

Custom shapes can also be designed and extruded to meet specific requirements.

Surface Finish

The surface finish of extruded sections can vary depending on the desired appearance and functionality. Common finishes include:

Anodized: Electrolytic process that creates a protective and decorative oxide layer.

Painted or powder coated: Coatings that provide additional protection and color options.

Natural: Raw aluminum finish with a slightly shiny appearance.

Strength

The strength of extruded sections depends on the alloy composition, shape, and temper. Tempering refers to the heat treatment process used to enhance the material’s properties.

T4: Solution heat treated and naturally aged for increased strength and hardness.

T6: Solution heat treated, cold worked, and artificially aged for maximum strength and hardness.

Applications

Aluminum extruded sections find applications across various industries, including:

Aerospace: Aircraft components, such as wing spars and fuselage skins.

Automotive: Body panels, chassis, and structural components.

Construction: Window frames, doors, and roofing systems.

Electronics: Heat sinks, enclosures, and cooling profiles.

Marine: Boat hulls, masts, and railings.

By considering the alloy composition, shape, surface finish, strength, and applications, engineers can select the most appropriate aluminum extruded section for their specific project requirements.

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