Aluminium 6082 vs 7075 – What’s the Difference

Aluminium 6082 vs 7075

Aluminium is one of the most commonly used metals in the world today and for a good reason. It’s lightweight, strong, and versatile. However, not all aluminium alloys are created equal. In this blog post, we will take a closer look at two of the most popular aluminium alloys available today – the 6082 and the 7075 – and explore the differences between them.

Difference Between Aluminium 6082 and 7075

Composition and Properties

The Aluminium 6082 alloy combines manganese, silicon, and magnesium to enhance its mechanical properties and make it more workable. It has a higher percentage of silicon and manganese than the 7075 alloy. As a result, it is more resistant to corrosion and has better weldability. The 7075 alloy, on the other hand, contains a mixture of zinc and magnesium, making it stronger and harder than the 6082 alloy. Due to its high strength, it is commonly used in aerospace applications, where durability is critical.


The 6082 alloy is often used for general-purpose engineering applications, such as structural components, welding fixtures, and bicycle frames. Its excellent weldability and corrosion resistance make it a popular choice for marine applications. The 7075 alloy, on the other hand, is frequently used in industries that require high strength, such as aircraft and aerospace. It’s also frequently employed in high-stress applications, like missile and machine parts subjected to extreme forces.


When it comes to machinability, the 6082 alloy is the clear winner. Due to its higher silicon and magnesium concentrations, it’s much more workable and easier to machine than the 7075 alloy. The 7075 alloy, on the other hand, is considered one of the most challenging aluminium alloys to machine but provides more significant returns in terms of strength, making it a popular choice for applications requiring the withstanding of intense forces.


Finally, the cost of each alloy will differ based on its composition and properties. Since Aluminium 6082 requires less strength, it is cheaper than the 7075 alloy. The 7075 alloy, which is stronger and much more challenging to machine, generally has a higher price tag than the 6082 alloy. So, choosing the right alloy for your application is crucial based on the required strength, ease of machining, mission-critical nature of parts, and cost.


In conclusion, when choosing an aluminium alloy for your application, it’s crucial to understand the differences between the two most popular options – the 6082 and the 7075. The correct choice of alloy will depend on factors like strength requirements, machinability, ease of welding, and cost. Both alloys have their advantages, and it’s essential to know what those advantages are before making a choice. We hope this blog post has helped enlighten you on the differences between these two popular aluminium alloys.



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