How is the profile aluminum tube used

Today, aluminum metal has occupied a fairly large niche in the construction market, this is agriculture, industry, production and even design, and in all this not the last place is taken by a rectangular, round and square pipe made of aluminum.

This non-ferrous metal and its alloys are so popular because it has high resistance to corrosion, strength, ductility, low density, immunity to magnetization and low specific gravity.

Below we will pay more attention to the quality of such a profile, its properties, application, as well as show you the video in this article.

Profile introduction

Table profiles alloy AD31T5

Aluminum alloys and their physical properties

Note. Alloys in their physical properties do not differ from the pure metal, but their price becomes lower, therefore, the production of the profile of them is more profitable and practical.

• So, doping does not affect the shear modulus and elasticity, for example, duralumin L16T has almost the same elasticity with Al: AS (E = 7100 kgf / mm²). However, the yield strength of the alloy is several orders of magnitude higher than that of pure Al; therefore, the alloys can be used to create structural materials with different levels of load. This also applies to profiles of any configuration and any section, for example, 20x20 mm, 4040 mm, 2040 mm, and so on. (See also the article Arbor from a profile pipe: features.)
• If pure AL is very plastic and its stretching to a critical state, that is, before a break, can be 40-50%, but its strength is only 60-70MPa, which is extremely small for the use of structural products in construction. But the alloys are already much stronger, and here the plasticity of the material may decrease, but the tensile strength increases from 2 to 5 times, and this is enough for such a profile to become a desirable component on construction sites. In addition, the material has a very high electrical and thermal conductivity - among non-ferrous metals such indicators are higher only for silver and gold.

Note. The most in demand in the construction market are alloys of the 6xxx series - approximately 75% of the total target products. The most popular brands are 6060 (6063) - AD31 and 6061 - AD33, 6005 and 6082 (AD35), as well as 1050 (AD0), 2017 (D1), 2014 (AK8), 2024 (D16), 3003 (AMts), 5083 (AMg4.5), 6101, 7005 (1915) and 7075.

Profile classification

Note. In the general sense, an aluminum profile implies extruded elements, but besides them there is also cast production.

When choosing an aluminum profile for construction, one should take into account not only its dimensions, but also its technical characteristics, if this is just not a decoration element, which simply must be attractive and pleasing to the eye.

But the aluminum alloy for bearing structures is determined by several parameters, such as tensile strength and ductility, relative narrowing, toughness, corrosivity, electrical conductivity, heat resistance, as well as the degree of hardening and heat treatment. When selling products in the store, such products must be accompanied by instructions from the manufacturer, where all these data are indicated.

The whole range of aluminum profile is distinguished in accordance with GOST 22233-2001, as well as EN 755-9 and EN 12020-2, where it is divided into hollow, solid, C-shaped, U-shaped variants, as well as profiles, where the end is open .

So, to hollow products are samples that have at least one cavity, closed in cross section, while solid - closed cavities do not have at all. But the open end can be in each of these types, both hollow and solid, as can be seen from the upper figure.

The hollow version can also have half-open or semi-closed cavities, however, they are usually called so-half-open or semi-closed. Here the cavity is closed only partially, for example, an aluminum shaped rectangular tube (square, round), where the entrance is on one side only.

For the production of hollow and semi-closed models, three types of matrices are used - the bridge (bridge), porthole (porthole) and cross (spider). The peculiarity of such manufacturing can be called the presence of one or several welds, which are formed due to the fluidity of the metal, which is located in the bridges supporting the mandrel.

After passing through the bridges in a special chamber due to high pressure, as well as high temperature, the metal is welded again, but for a continuous profile, pressing on solid discs takes place.

In the upper table you see the classification of different extruded profiles, depending on the degree of complexity of their production. All categories are arranged in ascending order, where A is the simplest option and N is the most difficult. (See also the article Stair from a shaped pipe: features.)

Conclusion

In conclusion, we can say that if you want to assemble any structure of aluminum profile with your own hands, then it will be most durable in accordance with the increase of the category of complexity. Of course, this increases the cost of the material, but, from this you can not get anywhere.