Aluminum channel extrusions are used for applications ranging from building supports, to framing equipment, to something much more. All the channels come in sizes and shapes and strength in respect to the projects on which they are being applied.
The strongest aluminum channel extrusion for heavy use would ensure that your project remains strong under pressure and that it does not bend too much and lasts a longer time.
We’ll cover what an aluminum channel is strong from, types of aluminum extrusions for a channel, and how to pick the best aluminum extrusion for the job. Let’s take the plunge and learn what it is about these extrusions that make them so solid for strength and durability.
What Makes an Aluminum Channel Extrusion Strong?
One of the major reasons aluminums is used in structural applications is because it is lightweight but has strength. The strongest aluminum channel is a function of several factors that determine the overall strength:
1. Alloy Composition
The strength of aluminum alloys differs. Various grades of aluminum, for example, 6061 and 7075, contain added elements that may make them more robust and suitable for demanding applications.
2. Channel Shape
This has an implication on the strength of the channel. A “C” shape, used quite often for structural support, has open sides and supports weight well. But in some cases, the stronger version can be the “U” shape or even a boxed extrusion with its closed structure.
3. Wall Thickness
The strength of carrying loads by the channel walls will depend on the thickness of the walls. The more massive the walls are, the greater the resistance to bending of the channel and thus can carry higher pressure compared to thin-walled channels.
4. Anodizing or Heat Treatment
Aluminum channels, by anodizing or heat treatment processes, are harder and more resistant to wear and tear. Anodizing and heat treatment protect against corrosion and make the material stronger against wear and tear.
With the right alloy, design, and treatments, aluminum channels can be just as strong as many steel options. Now, let’s take a look at the types of aluminum channel extrusions to see which are the strongest for what purpose.
Types of Strong Aluminum Channel Extrusions
Aluminum channels come in several shapes and types, each with unique strengths and uses. Here are the main types to know:
1. C-Channel
C-channels are the most commonly used aluminum extrusions. They resemble a “C.” They find best use in framing, structural supports, and heavy-duty shelving. Owing to their open design, they can support great weight and absorb high-impact loads, which explains why they are so much in demand in construction sites.
2. U-Channel
These U-channels look very much like C-channels, except their sides are much wider and open. These are a bit stronger because of the design allowing for better load distribution. Boxed or tube channels are fantastic for projects requiring a wide, stable structure, such as window framing or constructing doorways.
3. Boxed or Tube Channels
Among the strongest types of aluminum channels is a boxed or tubular design. It’s a completely enclosed channel and has greater resistance to bending with greater load capacity. Ideally used where maximum strength is desired, such as a machine frame or load-carrying beam.
4. L-Channels
They possess an “L” shape. They are much lighter compared to the box sections; however, they serve useful in adding reinforcement on any corners and edges. Smaller loads or the ones with structural support go together well with other forms of channel types.
5. Hat Channels
Hat channels have a profile resembling a hat shape. This profile adds to the stiffness, which prevents easy warping under heavy pressure. Hat channels are normally used at roof framing, wall support, or wherever extra reinforcing is needed.
6. Z-Channels
These have a “Z” form, and are often used with brackets or supporting structural panels. Z-channels are less common than any other type, but they prove useful when an application calls for flexibility with strength.
Each of these types has different strengths. The best support is given by boxed or tube channels, and then U-channels are followed by C-channels.
Strongest Aluminum Alloys for Channel Extrusions
This impacts the strength and durability of the channel. Among the strongest aluminum alloys for channel extrusions, include the following.
6061 Aluminum
6061 is the most common aluminum alloy for heavy-duty applications. It has aluminum combined with magnesium and silicon, giving it good mechanical properties, corrosion resistance, and high strength. For most construction projects, people use 6061 alloy C-channels due to their versatility, affordability, and extreme strength.
7075 Aluminum
7075 is a high-strength alloy, most compared to steel for its excellent durability. It contains zinc, which significantly enhances its strength, making it perfect for aerospace and military use. 7075 aluminum channels work well in high-stress applications where maximum strength is required.
6063 Aluminum
Not as tough as 6061 and 7075, but otherwise, 6063 has excellent corrosion resistance and provides a smooth finish. Most commonly used in architectural applications when appearance and medium strength is more important than maximum durability.
2024 Aluminum
The 2024 strength is also nearly as high as the 7075. Fatigue properties of these alloys are also very good. This is an excellent selection for aerospace use where reduction in weight is paramount for minimum weight loss. Extremely tough and lightweight yet inferior to 6061 concerning corrosion resistance.
6061 and 7075 represent two of the most significant strongest and versatile aluminum channel extrusions that will even go further to serve additional structural and industrial purposes more than any other aluminum alloy out there.
Conclusion
The strongest aluminum channel extrusions can be identified by alloy composition, channel shape, wall thickness, and necessary treatments. Channels made from 6061 or 7075 aluminum alloys provide the best balance of strength and durability. Boxed or tubular channels provide the most support for high-stress applications, while U- and C-channels are excellent for structural framing.
By knowing the types and strengths of aluminum channel extrusions, you can pick out the best for your project to obtain long-lasting and high-performance results. Then, aluminum channel extrusions are versatile and strong in many applications if selected appropriately.
