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7075 Aluminum vs 2024 Aluminum: What’s the Difference?

Aluminum metal alloys., a versatile metal widely used in various industries, come in different alloys with distinct properties. Two prominent alloys, 7075 and 2024, are often compared for their specific characteristics. Understanding the differences between 7075 aluminum vs 2024 aluminum is crucial for making informed decisions in aerospace and manufacturing applications.

What is 2024 Aluminum Alloy?

2024 aluminum alloy is a high-strength, heat-treatable aluminum alloy primarily composed of copper as the major alloying element, along with smaller amounts of manganese, magnesium, and traces of other elements. This alloy belongs to the 2000 series of aluminum alloys and is known for its excellent strength-to-weight ratio, good machinability, and high fatigue resistance.

What is 7075 Aluminum Alloy?

7075 aluminum alloy is a high-strength, heat-treatable aluminum alloy known for its excellent strength-to-weight ratio and good mechanical properties. It belongs to the 7xxx series of aluminum alloys, which are aluminum-zinc-magnesium alloys. The primary alloying elements in 7075 are aluminum, zinc, and copper.

The Difference Between 7075 Aluminum vs 2024 Aluminum

Composition and Alloying Elements:

The first key aspect to consider is the composition of these alloys. Both 7075 and 2024 belong to the aluminum-zinc-magnesium family, but their specific alloying elements set them apart. 7075 contains a higher percentage of zinc and copper, contributing to its superior strength. On the other hand, 2024 has a significant amount of copper, which enhances its machinability.

Strength and Durability:

One of the primary differentiators between these two alloys is their strength. 7075 aluminum is renowned for its exceptional strength, making it one of the strongest aluminum alloys available. This strength is achieved through a combination of zinc and copper, making 7075 ideal for applications requiring high tensile strength. In contrast, 2024 offers good strength, but it falls short when compared to the impressive strength of 7075.

Machinability and Formability:

While 7075 aluminum boasts superior strength, it is less machinable compared to 2024. The higher levels of zinc and copper in 7075 contribute to its lower machinability, making it challenging to work within certain applications. Conversely, 2024, with its higher copper content, is more easily machined and exhibits better formability, making it a preferred choice in situations where intricate shapes are required.

Corrosion Resistance:

Corrosion resistance is a critical factor in choosing the right aluminum alloy for specific applications, especially in environments where exposure to harsh conditions is common. In this aspect, 7075 demonstrates lower corrosion resistance compared to 2024. The trade-off between strength and corrosion resistance should be carefully considered based on the intended use of the aluminum.


The differences in properties between 7075 and 2024 aluminum alloys make them suitable for distinct applications. 7075, with its superior strength, is often chosen for aerospace components, high-stress structural parts, and military applications where strength is paramount. On the other hand, 2024, with its better machinability, finds its place in applications like manufacturing, precision parts, and components where formability is crucial.

In Conclusion:

In the choice between 7075 aluminum vs 2024 aluminum, the decision ultimately depends on the specific requirements of the application. If unparalleled strength is the priority, 7075 is the clear choice. However, if machinability and formability are more critical factors, 2024 may be the preferred option. Understanding the differences in composition, strength, machinability, and corrosion resistance is essential to make informed decisions when selecting the right aluminum alloy for a particular use case.



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