Alloy AD31T: characteristics, composition, application

general description

To begin with, it is worth saying that AD31T1 is an alloy in which there are three main elements. These elements are Mg–Al–Si, in other words, it is an alloy of magnesium, aluminum and silicon. According to its characteristics, AD31T1 belongs to the group of deformable aircraft. Among other similar materials, it differs favorably in that it has high ductility. In addition, it has fairly high technological properties and high corrosion resistance. It should be added that this alloy lends itself well to mechanical processing such as stamping, rolling, drawing and many others. The main purpose of this raw material is to produce parts with good decorative characteristics and a small margin of safety.

Aluminum profile pipe AD31

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Range

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We have a wide range of round aluminum profile pipes AD31 in stock at our warehouse:

• Alloy: AD31
• Condition: hardened (T1)
• Side: 15 to 100 mm
• Wall thickness: from 1.5 to 5 mm
• Length: 3000, 4000, 6000 mm

It is possible to order overall dimensions according to your requirements from 300 kg.

To order

In addition to the warehouse assortment, you can order any aluminum profile pipes from domestic and foreign alloys within the framework of regulatory documents and according to special requirements.

Minimum quantity, prices, delivery time are determined additionally.

* length of pipes, incl. multiple, can be agreed with the Consumer.

Documentation

Chemical description of the alloy

The characteristics of AD31T1 are regulated by GOST 4784-74. This alloy is made on the basis of aluminum, the share of which is about 99.3% of the total mass. The remaining 0.7% is silicon and magnesium. In addition to them, this small mass fraction also includes titanium, iron, zinc and manganese.

For example, the characteristics of AD31T1 vary greatly due to the fact that the amount of iron is approximately 0.5%. Because of this, ductility and strength are reduced, since this component forms various intermetallic compounds. However, at the same time, for example, it reduces the tendency of the material to crack during casting. As for manganese, it has a positive effect on the material’s resistance to corrosion, and also eliminates the loss of strength of the alloy during aging.

If we talk about the full percentage list of chemical elements in this alloy, it looks like this:

• iron - up to 0.5%;
• silicon from 0.2 to 0.6%;
• amount of manganese - up to 0.1%;
• chromium content - up to 0.1%;
• titanium contains a little more - up to 0.15%;
• aluminum occupies from 97.65 to 99.35% of the total mass fraction;
• there is as much copper as manganese;
• magnesium - from 0.45 to 0.9%;
• zinc - up to 0.2%.

In the end, it is worth adding that the characteristics of the AD31T1 alloy in terms of chemical indicators are very close to the composition of the 6060 alloy, which is quite widely used in Western Europe.

The difference is that 6060 contains less iron - from 0.1 to 0.3%. However, it is worth noting that the presence of this component has practically no effect on the mechanical qualities.

Aluminum alloy AD31T deformable

An alloy of aluminum with other metals increases the qualities that the main element contained in this compound lacks. Such compounds include the AD31T alloy. It welds and stretches well.

It is amenable to spot, seam and argon arc welding. Welds have 95 percent strength of the section strength. A feature of AD31T is good thermal conductivity and electrical conductivity.

Let's look at its characteristics.

Alloy AD31T

Material characteristics

Avialium refers to compounds that consist of a compound of three metals (Al-Mg-Si). This means that it contains aluminum, magnesium and silicon. This metal is very ductile and rolls well. Such characteristics of AD31T make it possible to make decorative parts from it that are not highly durable.

The material has anti-corrosion resistance in aqueous solutions and has proven itself in aggressive atmospheric conditions.

These properties are imparted by the oxide film that forms on the surface of the material. It protects aluminum from dissolution in sulfur, with the exception of halogens.

The alloy is well suited to color anodizing and powder coating. The material can be pressed to produce hollow semi-finished products for facade structures and pipes.

Properties of AD31T alloy

This type of metal has various modifications. Here are some of the modifications: AD31T1 and AD31T5. The weldability of the AD31T1 is quite satisfactory, as is the case with other modifications. The main characteristics of AD31T1 and AD31T5 are high strength and anti-corrosion. The service life of such metals increases to seventy years.

The AD31T variety is used in the construction of complex marine structures, mechanisms, and technological equipment.

It has become widespread due to its qualities:

• Non-toxic.
• Corrosion resistant.
• Lasting.
• Electrically conductive (second place after copper).
• Excellent soundproofing material.
• Beautiful appearance.

This alloy has an imported analogue. Its distinguishing feature from ours is its inflated price, and in terms of quality and composition, our alloy was no different before the amendments were made. However, in 2000, amendments were made to GOST 4784-97. Because of them, the chemical composition of the airline had to change slightly.

Download GOST 4784-97

Chemical composition

Aluminum alloy AD31 is avialium. According to GOST 4784-97, it consists of 98 percent aluminum. The rest of the space is taken up by various additives of elements. The presence of magnesium in the alloy gives it strength. And silicon makes it plastic. All aluminum modifications of AD31 have beautiful and decorative properties due to the presence of aluminum in them.

You can see the full chemical composition in the table below.

Chemical composition of AD31T alloy

Aluminum alloy AD31 is used in the production of structures for curtain walls and aluminum profiles. It creates worthy competition for steel.

In addition, AD31 is used for the manufacture of containers for the transportation of nitric acid, as it has sufficient strength and high corrosion resistance. The airline compound is used to create foil in tetra bags, milk flasks, and food transportation. It is used for finishing airplane and helicopter cabins, escalators and window frames.

Ingots made of AD31T alloyProfile made of AD31T alloy

Due to its good safety factor and excellent electrical conductivity, bonded cables and overhead wires are produced from this compound. The advent of aviation made it possible to reduce the number of breaks in wire power lines and increase the span distance.

Pipes, rods, and circles are made from it. Pipes made from AD31 are in particular demand. Because of its lightness, it is used to produce compact units that incorporate large amounts of conductive materials.

The basic mechanical properties of metal, such as strength and hardness, appear only after temperature hardening. In addition to hardening, natural aging is used for a week. And artificial aging shortens the heat treatment process. Because it lasts only twelve hours.

AD31 aluminum is hardened in one temperature regime, which is heating up to 530 degrees Celsius for hardening. The metal is aged for about twelve hours. And aging for such metal is carried out at a temperature of 170 degrees. At this temperature, the plasticity of the material is maintained.

Some modifications that operate under conditions of high and variable loads age at a temperature of 160 degrees no later than an hour after hardening.

The essence of hardening is to obtain a material that is stronger than ordinary aluminum. If you cool it slowly after AD31 treatment, you can get a plastic material, and if you cool it quickly, you can get a durable one.

A hardened avialium rod will have the same physical properties as an AMr2 alloy rod. But the hardness and ductility of the former will be less than the hardness and ductility of magnalium. Therefore, AD31 is used for the manufacture of electrical parts.

Heat treatment of aluminum alloys

On the market you can find parts both in their usual form, that is, without processing, and those made by heat treatment with natural aging, and after hardening with artificial aging. Parts made from aluminum after hardening are used in the production of machines and devices that operate under high operating voltage.

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Advantages of parts made of material

To understand what advantages the alloy has, it is necessary to consider the products that are made from it.

So, the advantages include the following qualities:

• the characteristics of AD31T1 aluminum make it possible to achieve high strength structures, which at the same time will weigh quite little;
• materials have good sound insulation properties;
• service life is quite long;
• high corrosion resistance and excellent ductility;
• aesthetic appearance of products;
• ease of maintenance, which means there is no need for careful maintenance;
• ample opportunities for the production of fairly complex structural products.

However, the characteristics of the Ad31T1 aluminum alloy also have their weaknesses. Among them, it is worth highlighting that high plasticity closely borders on a high level of deformation, which becomes especially noticeable when the temperature drops significantly. This can make transporting parts more difficult.

Alloy Application

Despite the existing disadvantages, this material is used quite widely.

It is traditionally used in the production of aluminum profiles. Approximately 57% of all manufactured products are made from this alloy. They can compete well with galvanized steel, since both materials have high corrosion resistance, but aluminum alloy does not require periodic application of a protective layer, unlike steel.

Due to a number of advantages, the material is well suited for the manufacture of pipes. The characteristics of AD31T1, such as high corrosion resistance and non-toxicity, have led to the fact that the alloy has become very popular in the manufacture of containers. Typically they are then used to transport nitric acid, organic matter or even food. AD31T1 is also used to produce foil used for cans and tetrapacks.

Recently, this material has been increasingly used in the manufacture of communication cables, as well as overhead cables. This became possible due to the fact that it has a greater margin of safety than copper, which was used before. The use of AD31T1 alloy made it possible to increase the span size, as well as reduce the amount of damage during the installation of lines, which occurred quite often. As for electrical conductivity, the material took second place right after copper, but at the same time its cost is approximately 1.5 times lower. In addition, aluminum is much lighter, which plays an important role when assembling compact products that must contain a large number of current-conducting elements.

Aluminum profile pipe AD31T1 AD31, price per meter, GOST, buy in Russia | MetalEnergoHolding

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MetallEnergoHolding Group of Companies offers to buy aluminum profile pipes wholesale and retail. We supply non-ferrous rolled products to all regions of Russia. Our clients are construction and installation organizations and large manufacturing enterprises; we carry out orders from the defense industry. We guarantee product quality and timely delivery.

Description

We offer aluminum profile pipes AD31T1, AD31 with rectangular and square sections of all standard sizes. Profile pressed steel is manufactured in accordance with GOST 18475-82, GOST 8617-81, GOST 22233-2001. Welded straight-seam pipes - in accordance with GOST 23697-79. The chemical composition of the metal is standardized by the requirements of GOST 4784-97.

Metal products made using pressing technology are supplied after hardening and artificial aging or without additional processing. Heat-treated rolled products are marked with the index T1. Pipes are manufactured with a wall thickness from 1.5 to 5.0 mm, length from 1 to 6 m. The side dimensions of square pipes are from 10x10 mm to 60x60 mm, rectangular - from 14x10 mm to 60x40 mm.

Table 1. Dimensions of aluminum pipes with a square cross-section, weight of 1 linear meter, number of meters per ton.

Table 2. Dimensions of aluminum profile pipes with a rectangular cross-section, weight of 1 linear meter, number of meters per ton.

Characteristics

Products made from aluminum wrought alloy AD31 have excellent technological properties. Hardening aluminum with artificial aging allows you to increase the hardness and strength of the material. Aluminum profile pipes AD31T1 and AD31 have high electrical and thermal conductivity, ductility, and excellent anti-corrosion properties.

Pipe products are designed for operation at temperatures from -70°C to +50°C and exposure to chemically active environments. Aluminum owes its corrosion resistance to the thin oxide film that forms on the surface of the metal.

Therefore, products and structures made of aluminum alloys are not afraid of scratches and other mechanical damage. The metal is easily welded; during the welding process, a strong seam is formed that is resistant to mechanical deformation.

Products made from AD31 alloy lend themselves well to the application of decorative coatings. Most often, the surface of profile pipes is painted with polymer compounds, powder paints, and subjected to color anodization.

Application

Pipes with a square and rectangular cross-section due to their design are able to withstand significant tensile and bending loads. The presence of stiffeners allows the use of aluminum profiles in the installation of frames and frame structures, including hangars, greenhouses, and gazebos.

The hollow profile is used as a cable channel when laying power cables and low-current communication lines. Square and rectangular pipes are used in the installation of suspended ventilated facades, suspended ceilings, and plasterboard partitions. In the furniture industry, a lightweight, durable profile is used as the main element for assembling the frames of tables, chairs, cabinets, and shelving.

Corrosion-resistant alloy profile pipes are widely used in shipbuilding, oil and chemical industries, pharmaceutical and food industries. Products and structures made of aluminum alloys are not susceptible to the effects of sea water, chemicals and organic compounds.

To buy an aluminum profile pipe of the AD31 and AD31T1 brands or to find out more about payment terms and delivery times, call the phone number listed on the website. Our managers will help you choose a profile with the necessary characteristics, answer all your questions, and tell you about discounts and bonuses.

Corners from AD31T1

Corners made of AD31T1 have also become very popular. The characteristics of this alloy made it possible to achieve the following advantages.

Firstly, the light weight of the corners made it possible to significantly reduce the weight of the frame during its creation. Secondly, ductility and ease of processing played a significant role, since the shape can be changed with hand tools if necessary, and after welding small and neat seams will remain. In addition, there is a high level of resistance to various aggressive environmental influences, as well as oxidation. This significantly increased the durability of the corners, which is one of the key factors in the construction of the same frame.

Alloys AD31T1 and 6063

In conclusion, it is worth noting that there is an American-made analogue - alloy 6063. The main coincidence is that the two main alloying elements are silicon and magnesium. The amount of the first element can be from 0.2 to 0.6%, and the second - the same as in AD31T1: 0.45-0.9%. However, there is a slight difference, which is that 6063 uses chromium instead of titanium. In addition, the alloy belongs to the group of medium strength, but at the same time, when undergoing heat treatment, it can improve these qualities, like AD31T1.