Everything You Need to Know About Aluminum Angle

Aluminum angle is one of the most widely used structural shapes in the aluminum industry. Its combination of light weight, strength, and corrosion resistance makes it a staple material in construction, manufacturing, transportation, and household applications. Whether you are working on architectural frameworks, industrial equipment, or simple DIY projects, aluminum angle offers flexibility and durability. This article will provide a detailed overview of aluminum angle, including its properties, types, applications, advantages, and selection guidelines.

What Is Aluminum Angle?

An aluminum angle is a piece of aluminum formed into an “L” shape, with two sides (called “legs”) that meet at a right angle. This simple geometry makes it ideal for supporting structures, framing, and bracing. Aluminum angles come in various sizes, thicknesses, and finishes to meet different application requirements.

Properties of Aluminum Angle

1. Lightweight

Aluminum angle is significantly lighter than steel, with a density of only 2.7 g/cm³. This makes it easy to transport, handle, and install.

2. Corrosion Resistance

The natural oxide layer that forms on aluminum provides strong resistance against rust and corrosion, making aluminum angle suitable for outdoor and marine environments.

3. Strength-to-Weight Ratio

Despite being light, aluminum angle has excellent strength-to-weight characteristics, making it ideal for structural support without adding excessive weight.

4. Workability

Aluminum angle can be cut, drilled, machined, and welded with ease, allowing for flexibility in fabrication.

5. Recyclability

Aluminum is 100% recyclable without losing its mechanical properties, making aluminum angle an environmentally friendly choice.

Types of Aluminum Angle

1. Equal Leg Aluminum Angle

   • Both legs are the same length.

   • Provides uniform strength on both sides.

   • Common in frameworks, reinforcements, and construction.

2. Unequal Leg Aluminum Angle

   • One leg is longer than the other.

   • Useful for applications requiring uneven load distribution.

   • Frequently used in architectural and structural applications.

3. Structural Aluminum Angle

   • Designed for heavy-duty use with thicker walls.

   • Offers superior strength for load-bearing structures.

4. Architectural Aluminum Angle

   • Manufactured with smoother finishes.

   • Often used in decorative or exposed applications.

Common Grades of Aluminum Angle

• 6061 Aluminum Angle

  • High strength, good corrosion resistance, and excellent weldability.

  • Widely used in aerospace, marine, and structural applications.

• 6063 Aluminum Angle

  • Superior surface finish and corrosion resistance.

  • Popular in architectural applications such as window frames and trim.

• 6082 Aluminum Angle

  • Stronger than 6063 and comparable to 6061.

  • Common in load-bearing structures and construction.

Manufacturing Process of Aluminum Angle

1. Extrusion: Heated billets are forced through a die to form the “L” shape.

2. Heat Treatment: Enhances mechanical properties like strength and hardness.

3. Finishing: Angles can be anodized, polished, or left in mill finish depending on application requirements.

4. Cutting and Sizing: Final products are cut to standard lengths or customized as per order.

Applications of Aluminum Angle

• Construction Industry: Framing, reinforcements, and supports in buildings and bridges.

• Architecture: Window frames, decorative trims, and curtain walls.

• Transportation: Components in trucks, trailers, and marine structures.

• Industrial Equipment: Machinery frames, platforms, and safety guards.

• DIY and Home Projects: Furniture, shelving, and reinforcement for household repairs.

Advantages of Using Aluminum Angle

1. Lightweight yet strong – Reduces structural load while maintaining strength.

2. Excellent corrosion resistance – Perfect for outdoor and marine use.

3. Versatile – Suitable for a wide range of industries and applications.

4. Easy to fabricate – Can be drilled, cut, and welded for customization.

5. Cost-effective – Provides long service life with low maintenance.

6. Eco-friendly – Fully recyclable, reducing environmental impact.

Comparison: Aluminum Angle vs Steel Angle