But the question remains the same — which alloy is the best product for bending? There are three factors that contribute to the the answer. To understand this better, we need to talk about alloys, which is the first factor to consider upon selection.
In aluminum, we have various designations that all have different chemical compositions, making them applicable in various fields of metal processing.
The most important ones are:. So, we see that specific alloys have a high degree of formability that provide the proper behaviour in processing and especially in bending. Another factor to consider is that during the process of bending, the metal hardens and strengthens by reason of the working effect.
Apart from alloy selection, thickness and bend radius are also critical factors that must be considered. The table below shows the permitted bend radii for 90 o bending. A third factor to be considered is that formability of a specific alloy can be found in the percentage of elongation and the difference between yield strength and ultimate tensile strength.
This rule states that the higher the elongation value the wider the range between yield and tensile strength , the better the forming ability of the alloy. From the aforementioned descriptions of alloys and the data shown in table 3 below , it is quite obvious that the best series for forming, and thus for bending, are series 3xxx, 5xxx, and in some cases 6xxx.
Series 2xxx and 7xxx are not to be considered and thus should be avoided due to being extremely strong. They are difficult to form in any way. This would be the best solution for most application. It is the highest strength alloy of the more common non-heat treatable grades.
It has excellent corrosion behavior and in the annealed condition has better formability than or even alloys, with This is one of the most versatile of the heat treatable family of alloys. Oxyfuel Cutting. Punching and Other Holemaking. Shop Management. Testing and Measuring. Tube and Pipe Fabrication. Tube and Pipe Production. Waterjet Cutting. Buyers' Guides. Digital Edition. Our Publications.
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Welcome back! In addition to pure aluminum Series 1xxx , Series 3xxx, 5xxx and 6xxx are considered best for forming and bending. Within each series the following alloys are considered exceptionally great for bending, for various reasons:. Series 7xxx and 2xxx series alloys, on the other hand, are not recommended for tube bending projects, as they are the strongest series, which makes them difficult to bend and form.
We also offer top-quality tube welding as both Solving a real corker of a Blog Contact Us. Recent Posts. It has great structural strength properties including toughness and hardness.
It has good finishing characteristics; it is easily anodized in clear or many different colors. Aluminum offers good corrosion resistance and is easily welded. It also comes in many different shapes including flats, rounds, and structurals. Aluminum T6 and T6 are the most common grades and tempers of aluminum specified.
The T6 represents the materials temper and its degree of hardness.
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