When it comes to choosing materials for construction, fabrication, or DIY projects, the aluminium box section is a popular choice due to its versatility, strength, and lightweight properties. However, not all aluminium box sections are created equal. They come in different grades, each with unique characteristics that make them suitable for specific applications. This article will explore the various grades of aluminium box section and their respective uses.
What is an Aluminium Box Section?
An aluminium box section is a hollow square or rectangular tube made from aluminium. It is commonly used in construction, automotive, and aerospace industries due to its high strength-to-weight ratio, corrosion resistance, and ease of fabrication. These sections can be found in a range of sizes and thicknesses, making them suitable for various structural and decorative applications.
Common Grades of Aluminium Box Section
Grade 6063
Aluminium box section made from grade 6063 is known for its excellent extrudability and surface finish. This grade is often used in applications where a high-quality surface finish is required, such as architectural and decorative trims. Its good corrosion resistance and medium strength make it ideal for window frames, irrigation tubing, and furniture.
Properties:
- Excellent corrosion resistance
- Good weldability
- Medium strength
- High-quality surface finish
Grade 6082
Grade 6082 is one of the strongest of the 6000 series aluminium alloys. Aluminium box sections made from this grade are widely used in structural applications due to their high strength and excellent corrosion resistance. This grade is particularly suited for load-bearing structures in the construction and transport industries.
Properties:
- High strength
- Good corrosion resistance
- Good weldability
- Suitable for structural applications
Grade 6061
Another popular grade for aluminium box section is 6061. This alloy combines good mechanical properties with excellent corrosion resistance, making it suitable for a wide range of applications. It is commonly used in the aerospace industry, automotive components, and marine environments.
Properties:
- Good mechanical properties
- Excellent corrosion resistance
- Good weldability
- Suitable for aerospace and marine applications
Grade 7075
For applications requiring high strength, aluminium box sections made from grade 7075 are the go-to choice. This grade offers one of the highest strengths among aluminium alloys, comparable to many steels. However, it is less corrosion-resistant than the 6000 series alloys, so it is often used in aerospace and military applications where strength is paramount.
Properties:
- Very high strength
- Less corrosion resistance compared to 6000 series
- Suitable for aerospace and military applications
Choosing the Right Aluminium Box Section
When selecting the right aluminium box section for your project, consider the following factors:
- Strength Requirements: Higher strength grades like 7075 or 6082 are suitable for load-bearing applications.
- Corrosion Resistance: For environments prone to corrosion, grades like 6063 and 6061 are ideal.
- Weldability: If the section needs to be welded, ensure the grade chosen has good weldability, such as 6061 or 6082.
- Surface Finish: For decorative applications, a grade like 6063 that offers a high-quality finish is preferable.
Conclusion
Understanding the different grades of aluminium box section can help you choose the right material for your specific needs. Whether you need high strength, excellent corrosion resistance, or a high-quality finish, there is an aluminium grade that will meet your requirements. By selecting the appropriate grade, you can ensure the success and longevity of your project.
