Are you working on a project that requires the use of aluminum? You're not alone; aluminum is one of the most popular metals for construction and manufacturing. But what type of aluminum should you choose?

In this article, we compare two grades of aluminum—7075 and 6063—so you can make an informed decision about which is best for your project. With its balance of strength, corrosion resistance, heat treatability, machinability, and cost advantages, either grade could be right for your application.

We'll dive into each in more detail to help you decide.

Overview of Aluminum Grades

Overview of Aluminum Grades

It can be tough to decide which grade of aluminum works best for your project, but this overview will help you make the right choice!

Aluminum comes in a variety of grades, each with their own unique characteristics. The two most common grades are 6063 and 7075 aluminum. Both have similar properties, but there are some key differences that should be taken into account when selecting the best grade for your project.

6063 aluminum is an alloy commonly used in architectural applications because it offers good surface finish and excellent corrosion resistance. It's also easy to form and weld, making it great for intricate shapes or large structures.

7075 aluminum is stronger than 6063 and has higher strength-to-weight ratio. This makes it a popular choice for aerospace, automotive, and military projects where strength is paramount. Even though its machinability isn't as good as that of 6063 aluminum, its superior strength often outweighs this drawback.

Properties of 7075 Aluminum

You may be wondering what makes 7075 aluminum so special. This alloy, which is composed of zinc and other elements, has an incredibly high density and strength compared to other grades of aluminum.

Additionally, it offers excellent corrosion resistance and machinability, making it a great choice for projects with specific requirements.

Density and Strength

Discovering the differences between 7075 and 6063 aluminum in terms of density and strength can greatly impact the success of your project.

7075 aluminum is stronger than 6063, but it's also heavier, with a density twice that of 6063.

For this reason, 6063 has an advantage over 7075 aluminum when looking at strength-to-weight ratio.

In addition, both alloys are corrosion resistant to some degree, but 7075 offers superior corrosion resistance due to its higher zinc content.

Ultimately, the alloy you choose will depend on the kind of strength you need for your project and how important weight is in achieving your desired outcome.

With the right information about their respective properties, you'll be able to make an informed decision about which alloy best suits your project needs.

Corrosion Resistance

You'll benefit from superior corrosion resistance if you choose 7075 aluminum, as it boasts twice the zinc content of 6063. This makes it more resistant to corrosion, allowing your project to last longer and remain in better condition for a greater period of time.

The added protection is especially beneficial if the part will be exposed to harsh weather conditions or chemicals. Furthermore, using 7075 aluminum means that you don't have to worry about applying protective coatings or treatments, saving both money and effort.

With its superior corrosion resistance, 7075 aluminum is an ideal choice for projects where long-term durability and reliability are essential.


Machinability of Aluminum 7075 and 6063

Experience the ease of machining 7075 aluminum with its superior machinability compared to 6063. The unique composition of 7075 makes it easier to shape, cut, and drill into than other types of aluminum alloys like 6063.

And because it's a softer material, you can machine it much faster without worrying about over-cutting or damaging the project. With 7075, you can be confident that your pieces will keep their intended shapes and dimensions throughout the entire process.

So, if you're looking for a fast, reliable solution for engineering projects requiring precision and accuracy, look no further than 7075 aluminum! Its superior machinability is sure to save you time and money—not to mention hassle—while giving your projects the professional finish they deserve.

Properties of 6063 Aluminum

6063 aluminum is known for its strength and durability, but it's also lightweight enough to be the perfect material for your project - like a feather in an eagle's talons!

It has a high tensile strength that makes it ideal for construction projects, as well as being corrosion resistant. This makes 6063 aluminum perfect if you're looking for something that'll last without having to spend a fortune on maintenance.

With its incredible strength-to-weight ratio, 6063 aluminum can give your project the support you need while still keeping weight down. This gives you more flexibility when designing and building whatever it is you're working on.

Plus, with its great machinability, 6063 aluminum can easily be shaped into whatever form you have in mind. So whether you're building an airplane or a bridge, 6063 aluminum could be just what your project needs!

Strength Comparison

When it comes to strength, 6063 aluminum is an ideal choice for your project. Its impressive strength-to-weight ratio gives you the perfect balance of support and lightness. This lightweight aluminum alloy is not only strong, but also some of the most corrosion resistant available.

Here are just a few reasons why 6063 aluminum might be right for your project:

  • It offers superior tensile strength and yield strength compared to other alloys in its class.
  • Its low weight makes it easier to transport and work with than heavier alloys.
  • It can be extruded into any shape, allowing for greater flexibility in the design process.

6063 aluminum offers unparalleled strength and durability without sacrificing flexibility or aesthetic appeal. Its unique combination of properties make it the perfect choice for projects that demand performance without compromise.

Corrosion Resistance Comparison

You'll be amazed by 6063 aluminum's corrosion resistance. It has a high resistance to saltwater and other corrosive environments up to three times greater than other aluminum alloys. This makes 6063 a better choice if you need an alloy for projects that will be exposed to harsh elements. Its superior corrosion resistance also means that 6063 won't require as much maintenance over time compared to 7075, giving you more freedom in the long run.

On the other hand, 7075 has a much lower corrosion resistance, making it more prone to damage from environmental factors like salt water or acid rain. So, when deciding which alloy is right for your project, consider your environment and the amount of upkeep needed.

6063 may offer the best combination of strength and corrosion-resistance for your needs.

Heat Treatability Comparison

Heat Treatability Comparison

Don't worry about the heat treatability of your project - 6063 aluminum offers superior malleability compared to 7075! Here's what you need to know about heat treatability:

  • 6063 aluminum is easier to work with and shape when subjected to a variety of temperatures. It has excellent welding and forming characteristics, making it ideal for projects that require intricate details.
  • 7075 aluminum is harder to form since it will crack easily when exposed to high temperatures. Its strength makes it more suitable for larger projects where rigidity is important. It also resists corrosion better than other types of aluminum alloys.

When choosing an alloy for your project, consider the type of heat treatment needed as well as its resistance against corrosion or wear and tear over time. 6063 aluminum can be used in a wide range of applications due to its ease in manipulating through various temperatures while 7075 works best on larger projects requiring higher levels of strength and durability.

Machinability Comparison

Machining aluminum doesn't have to be a hassle - 6063 offers superior machinability compared to 7075, making it easier to shape and cut with precision. This is great news if you're looking for an aluminum alloy that's easy to modify without compromising its strength.

With 6063, you'll have the freedom to create whatever parts or components your project requires with minimal effort. Plus, this alloy can handle high temperatures better than most other materials, so you won't need to worry about heat warping or distortion when machining.

So don't let machining aluminum stand in the way of achieving your vision - choose 6063 and get creative!

Cost Comparison

Cost is an important factor to consider when choosing an aluminum alloy. 6063 may be the more economical option due to its superior machinability. It requires less time and effort to shape or cut than 7075, making it a cost-effective choice. If you're looking for a material that won't break your budget but still offers reliable performance, then 6063 could be the right choice for you.

It's lightweight yet strong enough to stand up to most conditions. Plus, with its easy machinability, you can make intricate designs at minimal expense – giving you freedom from long lead times or high costs associated with other materials.


With its superior machinability and cost-effectiveness, 6063 aluminum alloy is the perfect choice for your project needs. Its low melting temperature makes it easy to work with, while its high strength means you don't have to worry about structural integrity. Plus, it's one of the most affordable aluminum alloys available on the market today.

On the other hand, 7075 aluminum has its own advantages over 6063 when it comes to certain projects that require higher levels of durability or strength. However, if you're looking for a good balance between performance and affordability, then 6063 should be your go-to option.

In conclusion, depending on your unique needs and requirements for your project, either 6063 or 7075 may be better suited for your needs - but overall 6063 is likely to be more cost-effective and easier to work with.