You will not find pure aluminum in industrial applications in many instances. Instead, aluminum alloys are extensively used, but in different scenarios based on the specific properties. As we manufacture extrusions at FONNOV Aluminum, we use aluminum alloys for extrusion manufacturing.

Aluminum 6063 and 6060 are extremely popular at FONNOV Aluminum. From the names, it is easy to consider the closely related alloys as similar. Some users may even use these metals interchangeably. The truth is that each of these alloys is unique, and although though they may share a few properties, there are striking differences.

What is Aluminum 6063?

Aluminum 6063 is from the 6000-Series of aluminum alloys. These alloys are renowned for their significant magnesium and silicon content. Magnesium and silicon enhance the ductility and strength of aluminum. This makes the material good for a wide array of projects.

Aluminum 6063 is therefore understandably popular in various manufacturing segments for its ductility and other properties. For instance, industries that use extrusions in architecture are fond of aluminum 6063 because the material is also strong. On top of that, this metal has great welding capability and surface appearance after anodizing.

While aluminum 6063 is not that good for machining processes, it does present exemplary weldability.

These properties are amazing, but they could be even better with tempering. Popular tempers of this alloy are 6063 T5, and 6063 T6.

With these qualities, this alloy is easily capable of creating complex shapes with smooth profiles. This capability appeals to businesses that manufacture window frames, roofs, and many other items.

Chemical Composition of Aluminum 6063

This alloy from the 6000 series contains magnesium and silicon as the prominent alloying elements. Magnesium enhances the strength of the alloy. Silicon helps lower the melting point of the alloy.

A lower melting temperature is preferable for an alloy. This is because it reduces the energy consumption during processing and machining. It also helps improve the mechanical properties of the metal.

Find below a table showing the chemical components of aluminum 6063:

ALUMINIUM ALLOY Si Fe Cu Mn Mg Cr Zn Ti Zr Others Al
6063 0.2-0.6 0.35 0.1 0.1 0.45-0.9 0.1 0.1 0.1 —— totally 0.15 remainder

✣All compositions are in percent.

Mechanical properties of aluminum 6063

To add to the chemical properties, this alloy also has distinctive mechanical properties that make it ideal for manufacturing extrusions. They call it an architectural alloy because of its medium strength and extrusion capability.

The table below shows several mechanical properties of 6063-T5 and 6063-T6:

Aluminium Alloy & Temper Thickness


Tensile Strength
Yield Strength
Elongation /%


6063-T5 ≤3.00 175 130 65
>3.00-25.00 160 110 7 65
6063-T6 ≤10.00 215 170 75
>10.00-25.00 195 160 8 75

✣The tested value is Min.

Common Applications of Aluminum 6063

Pipes for irrigation systems:  This alloys is valuable in the production of pipes for agricultural systems. Manufacturers find aluminum 6063 suitable for several reasons. These include suitability for welding, forming, machining, and corrosion resistance.

Marine industry: The shipping container should meet specific requirements- manufacturability, corrosion resistance, acceptable strength, and temperature resistance. Our aluminum 6063 extrusions can fit this role thanks to their high tensile strength, corrosion resistance, and relative hardness. Where these properties need to be higher, aluminum 6063 can achieve higher levels with heat treatment.

Automotive industry:  The applications of aluminum alloy 6063 extend to the automotive industry, where the manufacturers use extrusions for car bodies and other parts. The material offers excellent properties that blend well with the low weight.

Buildings/architectural: This is also a popular application of this aluminum alloy, which offers the user the required strength and extrusion capabilities. The combined qualities of extrusion with medium strength make this alloy excellent in the manufacture of door frames, window frames, and roofing.

What is Aluminum 6060?

Aluminum 6060 also belongs to the 6000 series of aluminum alloys. It is a highly used alloy, especially commercially owing to its suitable properties for the numerous applications in this area. Users who are not looking for any particular strength level in their product usually go for aluminum 6060.

It produces parts with excellent surface outlook and feel that can accept a wide range of surface treatments. Some of the popular areas of application of aluminum 6060 are construction, car components, windows, and doors.

One can easily confuse this aluminum alloy with aluminum 6063. However, its magnesium content is higher than that of 6063 aluminum.

This aluminum alloy accepts the anodizing treatment extremely well.

Let’s analyze this alloy further by expounding on the chemical and mechanical properties below.

Chemical properties of aluminum 6060

ALUMINIUM ALLOY Si Fe Cu Mn Mg Cr Zn Ti Zr Others Al
6060 0.3-0.6 0.1-0.3 0.10 0.10 0.35-0.6 0.05 0.15 0.10 totally 0.15 remainder

✣All compositions are in percent.

Mechanical properties of aluminum 6060

Like the other alloys in the 6000 series, aluminum 6060 has good mechanical properties. These properties make the alloy popular across industries. Its strength and corrosion resistance are admirable. The good capability for welding and forming also appeals to users.

You can easily use it to manufacture complicated extrusion profiles. Such profiles are great for heat sinks and related profiles.

More details on the mechanical properties of aluminum 6060-T5 and 6060-T6 are captured in the table below:

Aluminium Alloy & Temper Thickness


Tensile Strength
Yield Strength
Elongation /%


6060-T5 ≤5.00 160 120 60
>5.00-25.00 140 100 8 60
6060-T6 ≤3.00 190 150 70
>3.00-25.00 170 140 8 70

✣The tested value is Min.

Common applications of aluminum 6060

Trailer flooring: Being heat treatable and with medium strength plus good corrosion resistance, this alloy is applicable in the manufacture of flooring for trailers. If the cross-sections needed for the flooring are complex, this material will still give excellent results because it is good in cold-forming applications too.

Architectural extrusions: Aluminum 6060 is capable of forming and extruding. It  is therefore dependable in the production of various architectural products. These include door frames, window frames, and curtain walls.

Indoor fittings: Aluminum alloy 6060 makes excellent indoor fittings because it has good surface finish qualities. The metal is particularly highly compatible with anodizing, which offers the decorative and protective element needed in such products.

Electronic items: Extrusions of aluminum alloy 6060 are critical in electronic manufacturing.  You will find these extrusions in wide variety of items. Examples are motor housings, heat sinks, and electronic modules.

How do aluminum 6060 and 6063 differ?

The chemical composition for aluminum 6063 and 6060 shows some differences. From the 6063vs6060 analysis, both metals may have magnesium. However, aluminum 6063 has a slight edge in the content of this alloying element. The difference in magnesium content results in some differences in mechanical properties. This difference may appear insignificant on paper.

Look at the 6063 vs 6060 strength, for instance. Typically, higher magnesium content makes an aluminum alloy stronger. The ductility of the alloy tends to decrease with the magnesium content level. That’s why aluminum 6060 tends to be weaker and less ductile than aluminum 6063. The stronger a metal becomes, the more resistant to plastic deformation it becomes.

There are also 6063 vs 6060 machining differences and several other comparison aspects. The comparisons become even more interesting when you consider temper T5 T6 for 6063 and 6060. Looking at 6063 vs 6060 aluminum application (use) brings more insight too.

Which is the better option aluminum 6063 or aluminum 6060?

Being from the same series, aluminum 6063 and aluminum 6060 share many qualities and similar properties. That’s why it is understandable to many users to confuse between the two alloys. We think they can be used instead in many applications.

The relative strength and good corrosion resistance of both aluminum 6060 and 6063 are significant qualities for window extrusions and other applications that need such a combination. If you are looking for a more strength-to-weight ratio for some applications, there is an option in aluminum 6063. Such is the case in automotive components and architectural parts.

The good electrical conductivity of the two alloys is crucial in electronic components. An example is components that feature heat sinks.

These alloys have the added benefit of being easy to form into intricate shapes with flawless surfaces. Both aluminum 6063 and aluminum 6060 is also great for anodizing and has good corrosion resistance. That’s why they have so many similar applications.

Do you need more information about these and other aluminum alloys for extrusions? Please visit our extrusions page.

And why Buy 6060 and 6063 aluminum extrusions from FONNOV ALUMINIUM? We have a large customer base across China who come for our high-quality aluminum extrusions. FONNOV ALUMINIUM is a leading aluminum extrusion manufacturer in CHINA. If you are requiring the 6063 aluminum extrusions and 6060 aluminum extrusions, we will be your best choice for your project.


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