A very popular type of rolled aluminum alloy these days is corrugated aluminum sheet. Its surface with a convex pattern and low weight have made this product highly popular among builders and designers.
1
The described rolled metal products in accordance with GOST 21631 are rectangular flat products, on the surface of which there is a convex image formed by protrusions located at a certain angle relative to each other. These projections are called grooves (sometimes grooves or grooves). It is they, combined with the light weight of the sheets, that give the rolled products unique properties.
Based on the number of grooves, corrugated aluminum sheet is classified into one of three types. If there are five riffles on its surface, the rental is called a quintet, two riffles are called a duet, and one is called a diamond.
The dimensions of the sheets according to the above GOST vary within the following limits:
- length – from 200 to 600 centimeters;
- width – from 100 to 150 centimeters;
- thickness (note - this indicator does not take into account the height of the convexities of rolled aluminum) - no more than 4 millimeters (minimum - 1.5 millimeters).
Weight (theoretical weight per linear meter) is calculated using a special formula. It takes into account the largest and smallest geometric parameters of the product in terms of thickness and width, the density of the aluminum alloy from which the sheets are made. In practice, the weight of corrugated steel of different types according to GOST is calculated as follows:
- add the minimum sheet thickness to the maximum and divide the resulting amount by two;
- add its minimum value to the maximum width and again divide the resulting amount by two;
- multiply these two numbers;
- the product is multiplied by the density of the aluminum alloy and by 10 to the minus third power.
If the weight of sheets made from alloys V95, V95-2 and V95-1 is calculated, their density is taken to be 2.85 g/cubic centimeter. When determining the weight of corrugated rolled products from other aluminum alloys, a special conversion factor is used. It is equal (data from GOST 21631) 0.947 for alloy AB; 0.937 for AMg3; 0.926 for AMg6; 0.94 for AMg2; 0.95 for AMg5.
The conversion factor for compositions D1, D12 and D16 is in the range of 0.954–0.982; for the AKM alloy it is 0.97; AMtsS, AMts and MM – 0.958; for 1915 – 0.972. Thus, knowing the width and thickness of the sheets, as well as the specific grade of aluminum alloy, it is not difficult to calculate the weight of the finished rolled product.
2
All sheets that are shown in the photo for this article, regardless of the number of grooves on their surface, are produced by rolling (hot or cold). According to GOST, hot rolling is used in cases where it is necessary to obtain products with a thickness of 3–4 millimeters. But cold technology is usually used for the production of thin rolled products.
The production of sheets occurs according to the following scheme:
- 2-3 ton aluminum ingots are cast;
- various preparatory operations are performed;
- Hot rolling is performed, which may be followed by cold rolling.
After this, the products are subjected to heat treatment and finishing procedures. Methods of heat treatment and finishing of finished products are different. They depend on what alloys permitted by GOST are used to produce corrugated products.
Additional operations are usually carried out taking into account the technical conditions that are adopted at a particular plant, for example, TU 1-801-20-02 (quintet sheet with lentil grooves on one side of the rolled product), TU 1-3-71-90 ( rolled from AMg2), TU 1-3-112-75 (rolled from D16) and so on.
Most often, corrugated products are produced from aluminum alloys of the AMts and AMg brands. They have excellent anti-corrosion properties, so sheets made from them are used in all industries where this characteristic is of paramount importance (food industry, construction industry). AMts alloys, in addition, are deformed without problems and are easily joined by welding, have low weight and excellent mechanical properties.
Note that magnesium and aluminum alloys are not subjected to heat treatment. In this regard, their strength indicators are increased using cold cold hardening. This technique somewhat reduces the plasticity of the sheets, but significantly increases their hardness.
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The corrugated sheet is distinguished by a convex pattern on the surface, which is formed by corrugations located at an angle to each other. Different arrangement of grooves creates different types of patterns. Depending on this, there are corrugated sheets: with 1 corrugation - "lentil", with 2 corrugations - "duet", with 5 corrugations - "quintet". High-quality corrugated aluminum sheet has a rough matte surface and varying thicknesses, while the height of the convexities is not taken into account. Sheet sizes can also vary.
The production of corrugated sheets from aluminum alloys usually consists of the following steps: ingot casting, preparation operations, hot rolling, cold rolling, heat treatment and finishing operations. Before obtaining strips from ingots, it is necessary to ensure a reduction in the heterogeneity of the chemical composition and structure of the ingot and relieve internal stress. To do this, homogenizing annealing of the ingots is performed, which at the same time increases the plastic characteristics of the metal. Homogenization - heating to a temperature of 20-40 degrees for several hours. Homogenization is carried out in electric shaft furnaces.
Thanks to the characteristics of the alloys and grooves throughout the surface, the sheets have special properties:
- strength and durability - service life from twenty to one hundred years, depending on conditions;
- the highest corrosion resistance - lasts almost the entire service life, even when exposed to aggressive environments;
- has a high anti-slip ability - convex patterns prevent slipping;
- high spark safety - the sheet is not flammable, and the riffles prevent the formation of sparks;
- aesthetics - the pattern formed by the corrugations gives the sheets decorative properties.
Most manufacturers produce aluminum corrugated sheets anodized, which enhances their quality and increases service life, and also expands the scope of application. The high quality characteristics of the material are most clearly manifested in corrugated sheets with a “quintet” pattern, due to the number of corrugations and their relative position.
Such unusual properties of corrugated sheets make it possible for it to be widely used. It is used as anti-slip floor coverings, facing and decorative elements, as tuning and base covering, stair steps and partitions, as a base for reinforcement and finishing. This material is used both indoors and outdoors. You can buy corrugated aluminum on the website http://spbalum.ru/ by following the link. 
Lightness, intrinsic safety and attractive appearance allow it to be used in the automotive and aviation industries, in the food industry and in all types of production. It should be especially noted that due to its special qualities, it is also used in those industries where the use of other materials is more dangerous or uneconomical. Corrosion resistance allows the use of corrugated sheets in places of high humidity, such as shipbuilding, marine and water facilities, and so on. And its non-flammability and intrinsic safety are successfully used at gas stations and other facilities with increased requirements for fire protection. The special properties of aluminum corrugated sheet make it an almost universal material for use in any area.
Application for product/service
Light weight;
Long service life;
Relief pattern that prevents slipping even on a wet surface;
Presentable appearance;
Environmental safety of the product;
Resistance to many aggressive factors of the operating environment;
Affordable price of corrugated aluminum.
The most common brands you can buy are: AMg2N2, 1105ANr, AMg2Nr, and AMg3N2. The letter H indicates that the alloy is hard-worked. This material is more durable and hard. There are several types of cold-working: semi-hard-working (H2), cold-working (H), one-third cold-working (H3) and one-quarter cold-working (H4). Cold-worked sheets (H) have the greatest strength. The letter P is added to the marking of products obtained by cold rolling.
If you need to additionally process the product using bending, welding, and the product will be used outdoors, it is better for you to buy AMG2N2R (semi-hardened corrugated steel) or AMG2NR (cold-cold rolled steel). When used indoors, on a flat surface without distortion, the cheaper imported analogue GALAXY is also suitable.
Aluminum sheet corrugated lentils
Also found under the name “diamond” or “diamond”. The pattern is the simplest, consisting of a uniformly repeating single riffle. Due to its original appearance and anti-slip properties, it is widely used in many fields.
Aluminum sheet corrugated duet
It is a rolled metal product with double corrugation, evenly arranged in a checkerboard pattern on the surface, perpendicular to each other. Often used as a floor covering, because... Compared to lentils, it provides greater adhesion to the surface.
Aluminum sheet corrugated quintet
Five parallel grooves forming a pattern. Each group of 5 convexities is located perpendicular to another similar group. Thick quintet sheets are in great demand in the production of stair steps and lining the interior of car bodies.
Application of Aluminum Corrugated Sheet
Corrugated aluminum is an extremely popular and sought-after metal product that can be used everywhere. Among the areas of application of corrugated aluminum sheets are construction, production sites (including stairs, flights of stairs, passages, etc.), automotive and instrument making, agriculture, aircraft manufacturing and many others.
Due to their high resistance to corrosion, aluminum corrugated sheets can be used both outside and indoors, used as a finishing material and floor coverings. Very often, corrugated aluminum is used for lining refrigerated vans and car vans. In the food industry, corrugated aluminum is used for flooring.
The main function that makes corrugated aluminum so popular is the formation of an anti-slip coating. But today, very often, corrugated aluminum sheets are used for decorative purposes, for example, for tuning cars, motorboats, boats and other vehicles, as decorative elements. You can’t do without corrugated aluminum in the production of refrigeration rooms, installations, as well as many household appliances.
Aluminum sheet manufactured according to GOST 21631-76, technical alloy 1105 suitable for thermal insulation and finishing materials. Acid-resistant sheets AMts, AMg2 and Amg6 are manufactured according to GOST 11069-74. Sheets are in demand in shipbuilding, where increased resistance to aggressive environments is required. Food alloys A5M, ADO and A5N with minimal lead and arsenic content. Sheet aluminum is used in the manufacture of dishes, barrels for water and liquid products, containers and cans. Aluminum sheets AD1 and AD are produced from technical grades with a chemical composition in accordance with GOST 4784-97.
| Brand | Thickness | Price |
| Sheets AMg2M, matte | ||
| Aluminum sheet AMg2M | 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm | 270 rub. |
| Aluminum sheet AMg2M | 2 mm, 2.5 mm | 260 rub. |
| Aluminum sheet AMg2M | 3mm, 4mm, 5mm, 6mm, 8mm | 265 RUR |
| Sheets AMg3M, matte | ||
| Aluminum sheet AMg3M | 0.5 mm | 255 rub. |
| Aluminum sheet AMg3M | 0.8mm, 1mm, 1.2mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 7mm | 280 rub. |
| Sheets AMg5M, matte | ||
| Aluminum sheet AMg5M | 335 RUR | |
| Sheets AMg6M, matte | ||
| Aluminum sheet AMg6M | 0.8mm, 1mm, 1.2mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm | 340 rub. |
| Sheets 1105AM, matte | ||
| Aluminum sheet 1105AM | 180 rub. | |
| Sheets 1105AN, matte | ||
| Aluminum sheet 1105AN | 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm | 180 rub. |
| Sheets A5M, matte | ||
| Aluminum sheet A5M | 231 RUR | |
| Sheets A5H, food grade | ||
| Aluminum sheet A5N | 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm | 231 RUR |
| Sheets AD1m, matte | ||
| Aluminum sheet AD1M | 234 RUR | |
| AD1n sheets, food grade | ||
| Aluminum sheet AD1N | 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm | 234 RUR |
| AMC sheets, matte | ||
| Aluminum sheet AMC | 0.5mm, 0.8mm, 1mm, 1.2mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm | 251 RUR |
Corrugated Aluminum Sheet from wrought aluminum alloys 1105ANr, AMg2N2, AMg2Nr and AMg3N2. The thickness of the product is indicated without taking into account the height of the convexities; they are produced in accordance with TU 1-801-20-2008 and TU 1-801-17-2008.
| Brand | Thickness | Size | Characteristic | Price |
| Corrugated aluminum sheets AMG2n2 | ||||
| Liszt quintet AMG2n2 | 1.2 mm | 1200x3000 mm | 13 | 290 rub. |
| Liszt quintet AMG2n2 | 1.2 mm | 1500x3000 mm | 16 | 290 rub. |
| Liszt quintet AMG2n2 | 1.5 mm | 1200x3000 mm | 16,165 | 290 rub. |
| Liszt quintet AMG2n2 | 1.5 mm | 1500x3000 mm | 20,206 | 290 rub. |
| Liszt quintet AMG2n2 | 2.0 mm | 1200x3000 mm | 21,15 | 290 rub. |
| Liszt quintet AMG2n2 | 2.0 mm | 1500x3000 mm | 25 | 290 rub. |
| Liszt quintet AMG2n2 | 3.0 mm | 1200x3000 mm | 30,71 | 290 rub. |
| Liszt quintet AMG2n2 | 3.0 mm | 1500x3000 mm | 37,416 | 290 rub. |
| Liszt quintet AMG2n2 | 4.0 mm | 1200x3000 mm | 40,457 | 290 rub. |
| Liszt quintet AMG2n2 | 4.0 mm | 1500x3000 mm | 47 | 290 rub. |
| Corrugated aluminum sheets AMG2NR | ||||
| Liszt Quintet AMG2Нр | 2.0 mm | 1200x3000 mm | 21,4 | 280 rub. |
| Liszt Quintet AMG2Нр | 3.0 mm | 1200x3000 mm | 31,55 | 280 rub. |
| Corrugated aluminum sheets 1105ANP | ||||
| Liszt Quintet 1105ANr | 2 mm | 1200x3000 mm | 22,13 | 200 rub |
| Liszt Quintet 1105ANr | 3.0 mm | 1200x3000 mm | 31,86 | 200 rub |
| Liszt Quintet 1105ANr | 4.0 mm | 1200x3000 mm | 42,48 | 200 rub |
| Corrugated aluminum sheets AMG3N2 | ||||
| Leaf quintet AMG3N2 | 2 mm | 1200x3000 mm | 21,15 | 280 rub. |
| Leaf quintet AMG3N2 | 2 mm | 1500x3000 mm | 25,46 | 280 rub. |
Characteristics
Silver-white metal, resistant to corrosion, low density, ductile. The metal quickly oxidizes in air and becomes covered with an oxide film of Al2O3, which protects the product from rust. When in contact with food, the metal retains neutral properties and is resistant to most acids of organic origin, even concentrated nitric acid.
Aluminum alloys are divided into wrought and cast:
- Wrought aluminum alloys are produced by hot-rolling
- Cast aluminum alloys are used for castings
Sheets are divided into heat-strengthened and pressure-strengthened. The most commonly used classification is based on the characteristics of the alloys.
Heat-strengthening alloys
- AK4, AK4–1, D20 and 1201 - heat-resistant alloys
- B93 and B95 - high-strength alloys
- AD33, AD31 and AD35 - medium strength alloys, alloyed with: aluminum, magnesium and silicon
- 1925 and 1915 - alloys are welded to a standard strength rating
- D16, D1 and D18 - alloys of normal strength, like duralumin, alloyed with: aluminum, copper and magnesium
- AK8 and AK6 - forging aluminum alloys
Non-heat-strengthening alloys
- AMg1, AMg6, AMg2 - alloy, medium strength, called Magnalium
- D12 and AMts - an alloy with reduced strength, alloyed with aluminum and magnesium
- AD1 and AD0 - technical aluminum alloys, not alloyed
Increased corrosion resistance to the environment and performance indicators are achieved by spraying additional elements onto the surface of the sheet. Treatment increases the service life of products. An increase in resistance to mechanical loads is achieved by hardening aluminum. Annealing calms the aluminum structure for further processing.
Manufacturing method - pressing by cold and hot deformation. Pressing is also used, which takes place in several stages. The starting material is prepared in a special furnace using heat treatment, followed by rolling to the required dimensions. The function of the pressing mill is to force aluminum into the holes in the mill matrix. Subsequently, the sheets undergo cleaning and plating. The method is based on applying additional elements to the surface of the sheet, such as zinc, silicon, titanium and magnesium. Cladding of sheets increases the corrosion resistance of products. Additional processing - hardening (hardening).
The final product, free of tears, bubbles, cracks and corrosion marks, is divided into:
- Clad sheets (thick and normal) and unclad
- Hardened sheet, hardened, naturally or artificially aged
- Sheet without heat treatment
- Annealed sheet
- Semi-hardened sheets
- Hard-worked, hardened, natural aging
Additionally, the sheets are classified according to manufacturing accuracy. Normal accuracy according to basic indicators: length, width, thickness. Sheets are manufactured in accordance with GOST 21631–76 of four types:
- Acid resistant sheet- AMG grades (2, 3, 5 and 6), which are alloyed with manganese and magnesium.
- Technical sheet- used as a finishing and insulating material.
- Perforated sheets- intended for the construction field: air duct grilles, decorative interior details, such as reinforcing plasterboard corners of structures. Perforation occurs on coordinate-punching presses and is divided into: rectangular, round or diamond-shaped holes.
- Food sheets- A5M, A5N2 and A5N, and primary aluminum A7 or AD0, without heat treatment. Sheets are highly hygienic and contain no impurities or alloying elements.
Sheet thickness: thin aluminum sheet 0.3 mm - 2 mm Aluminum plate 10.5 mm thick, width from 500 mm to 2000 mm, length from 2000 to 7200 mm
Corrugated and anodized sheets for special purposes.
- Corrugated sheets (profiled)- the flexibility of the sheets allows you to work on roofs with complex designs and shapes.
- Anodized Sheets- matte, mirror and semi-matte. Anodizing of sheets occurs using a simple electrochemical procedure, the formation of an oxide protective film of a crystalline structure on the aluminum surface.
Corrugated Sheets
When covering special equipment and in industrial premises, aluminum alloys are used: AMG2N2, AMG2NR, 1105ANR, AMG3N2. Popular sheet sizes are 1200x3000 and 1500x3000 mm. We also produce sheets of other sizes, for example: 1250x2500 mm, 1200x4000 mm, 1500x3500 mm. and 1500x4000 mm. If necessary, the length of the sheets reaches 7200 mm.
Sheets are easy to process due to their elasticity, which is several times higher than, for example, steel or cast iron. The sheets can be easily bent at different angles, shapes of arbitrary sizes can be cut out of them, this is necessary for sheathing frames of complex shapes. Some types of corrugated aluminum alloys can be easily welded. Ribbons increase the rigidity coefficient; the thinnest sheet can easily support a person’s weight. Due to the uniform distribution of the load over most of the surface.
In industrial premises where there is an increased risk of fire, a corrugated quintet sheet is used. Rolled steel does not spark when exposed to metal objects and some types of stone. Increased resistance to corrosion allows the use of rolled steel in production with caustic chemicals.
Similar products are produced abroad under the name Galaxy, which also has five riffles. Products are brought to Russia mainly from Serbia. Domestic products are cheaper, but the characteristics do not differ. With a strong and sudden mechanical impact, or prolonged pressure on one area, the sheets are deformed. In cases where increased strength is needed, sheets up to 10 mm are used. In this case, the advantage in weight to strength of rolled steel is lost.
The material is passed through rolling mills, where the aluminum passes through rows of paired cylindrical shafts. On special crimping shafts using the hot rolling method, ribbed patterns are stamped. Excessive stress in the metal is reduced through heat treatment. Next, the rolled product undergoes grinding, which removes the smallest flaws, and is cut to the dimensions required by the customer.
The sheets are used for covering mechanisms in vehicles. In factories, sheets are sheathed on the steps of stairs, bridges near machines and production lines. The corrugated surface increases the grip of employees' shoes on the surface, and reduces the risk of tripping or slipping. These measures improve work safety and reduce work-related injuries.
Quintet sheets are used to cover refrigerators and freezers. When moving products using carts or manually by staff, the grooved surface improves traction on staff's shoes and cart wheels. Industrial enterprises produce boats with decks made of corrugated aluminum. The material is used to cover floors and walls in cargo and technical rooms of ships and aircraft; on ships, engine rooms and holds are finished with a quintet.
Corrugated aluminum is used for tuning trucks and cars; the sheet covers hoods and side steps on trucks. Also, the corrugated floor surface is used in public transport, directly in winter, when people entering have their shoes covered in snow.
Coatings with grooves are also used in everyday life. Designers use sheets to add style to a room. The sheets are used for covering walls and staircase steps. It will look natural on a spiral staircase, the steps of which are held in place by metal strings and rods. Hi-tech style bunkers cover the floors of the second level with corrugated sheets, it looks like the second floor is not a full floor, but a mezzanine studio. The decorative characteristics of corrugated aluminum sheets are suitable for interior decoration of columns and partitions, suspended ceilings, radiator screens.
offers buy aluminum sheet fluted and aluminum sheet embossed wholesale and retail from our own warehouse inSt. Petersburg.Our range consists of corrugated aluminum sheets and embossed aluminum sheets, various in size, alloy grade and delivery condition.
We are pleased to offer you delivery in St. Petersburg, the Leningrad region, as well as through transport companies to Moscow, regions of Russia and the CIS countries.
To select the optimal alloy corrugated aluminum sheet and embossed aluminum sheet- check out the table - Selection of alloy.
Corrugated aluminum sheet is a sheet of rolled aluminum metal with a convex pattern. Rifle Solid aluminum sheet is often used as anti-slip flooring on stairs, vehicles and refrigeration plants.
TU 1.804.432.2006 (European standard EN 1386-2007 ) regulate the mechanical properties depending on the alloy and the state of delivery, the permissible maximum deviations in the geometric dimensions of corrugated aluminum sheets, as well as the rules for their acceptance, and GOST 4784-97 and GOST 11069-01 regulates the chemical composition of alloys used in the production of pcorrugated aluminum sheets.
Corrugated Aluminum Sheets used as cladding panels in and interior and exterior, in production and directly in the food industry, in design or decoration, as well as for car tuning, as flooring (carousels, attractions), etc.
The alloys used in the production of corrugated aluminum sheets have high spark safety, which is very important in many areas of application of this aluminum rolled product.
The good operational, physical and chemical properties of corrugated aluminum sheet determine a very high demand for it from enterprises in St. Petersburg.
- Corrugated aluminum sheet Quintet, Diamond, Duet
- Corrugated aluminum sheet “rice grain”
- Embossed aluminum sheet (“orange peel”)
- casting of ingots (for rolling sheets and plates, ingots weighing several tons are used);
- preparatory operations;
- hot rolling;
- cold rolling;
- heat treatment;
- finishing operations.
- “TU 1-804-432-2006. Sheets and strips of aluminum alloys with a relief surface";
- “TU 1-3-112-75. Corrugated sheets made of alloy D16";
- “TU 1-3-71-90. Corrugated sheets made of AMg2 alloy;
- “TU 1-3-87-90. Sheets made of aluminum alloy grade AMg2 with lentil corrugation";
- “TU 1-801-20-02. Sheets with one-sided lentil corrugation “quintet”.
- M - annealed (soft; after annealing the metal becomes more ductile and malleable);
- N - cold-hardened;
- H2 - semi-hardened;
- T - hardened and naturally aged;
- T1 - hardened and artificially aged;
- P - made of refined aluminum.
- 1105AT, VD1AT - hardened and artificially aged;
- 1105AM, VD1AM - annealed;
- 1105AN, VD1AN - cold-hardened.
- VD1AN2 - semi-hardened;
- VD1NR - made of purified alloy, cold-worked.
Corrugated Aluminum Sheet
Harmonious combination of functional and decorative qualities
Along with strip, profile, rod and other semi-finished products made of aluminum and its alloys, aluminum sheet. Its use allows solving an extremely wide range of technical problems. Approximately 40% of all aluminum produced in the world is used in sheet form. Corrugated sheets occupy an important place in the range of aluminum sheets.
Corrugated Aluminum Sheet is a flat semi-finished product of rectangular cross-section, which received its name due to the presence on the surface of a convex pattern formed by regular rows of protrusions located at an angle to each other. This is the so-called riffles, literally translated from English - gutters, grooves.
Manufacturing technology
Corrugated aluminum sheet is made by hot or cold rolling, as a result of which a pattern is extruded onto its surface. Rolling is one of the main methods of metal forming, which makes it possible to obtain products of various shapes, including thin and thick sheets. In addition, it helps improve the mechanical properties of metals.
The cold forming method produces durable thin sheets with a high-quality surface. By hot rolling method - corrugated aluminum sheet of greater thickness.
The production scheme for sheets made of aluminum and its alloys consists of several stages:
Manufacturers of aluminum corrugated sheets refer to various regulatory and technical documents. Here are just some of them:
Along with domestic products, foreign-made products manufactured in accordance with EN, ASTM and other standards are presented on the market.
What grades of aluminum and its alloys are used for the manufacture of corrugated aluminum sheets
The properties of aluminum and its alloys largely determine the characteristics of corrugated aluminum sheets. A significant part of them are made from aluminum and magnesium alloys. These are ductile, well weldable, resistant to corrosion, and have decent (especially compared to the weight of aluminum, which is several times lighter than steel) mechanical properties. Such alloys include AMg2 (AMg2R, AMg2M, AMg2N2, AMg2NR, AMg2N2R) and AMg3 (AMg3M, AMg3N, AMg3N2, AMg3NR AMg3N2R). As well as their foreign analogues - EN AW 5251 and EN AW 5754, respectively.
Since aluminum-magnesium alloys are not strengthened by heat treatment, work hardening (cold pressure treatment) helps improve the mechanical properties of corrugated sheets made from them. It significantly increases strength characteristics - hardness and strength. True, you have to pay for this with some reduction in ductility.
Alloys of the aluminum-copper-magnesium system are used in large quantities for the production of corrugated aluminum sheets.
Sheets made of aluminum wrought alloy 1105 (1105AT, 1105AM, 1105AN) are distinguished by ease of machining, good tolerance to low temperatures and fracture toughness. Thanks to cladding, it is possible to bring the low corrosion resistance, which is problematic for duralumin, to the required level. Various heat treatment methods help to achieve increased ductility of 1105 sheets.
For the manufacture of corrugated sheets, other aluminum wrought alloys with a high content of copper and magnesium are used - VD1 (VD1NR, VD1AM, VD1AN) and D1 (D1AMP, D1NR).
Another material for the manufacture of aluminum corrugated sheets is the alloy of the aluminum-manganese system AMts. Thanks to its high resistance to corrosion, AMts corrugated sheets can be used where this quality is especially important - in construction, the chemical and food industries. The AMts alloy welds well and is easily deformed, both in a heated and in a normal state.
In aluminum for sheet billets of AD0 grade (AD0N2, AD0NR), the mass fraction of aluminum is at least 99.50%; the introduction of titanium up to 0.15% is allowed; contains iron and silicon in small quantities.
What do letters and numbers say?
To the combination of letters indicating the grade of the alloy, letters are added that inform about the state of delivery, in this case of corrugated sheets:
Thus, sheets made of alloys 1105 and VD1 can be supplied:
The presence of the letter “A” indicates that this is a corrugated aluminum sheet with normal plating. (Clading is the application of a thin layer of metal to the surface of products to increase corrosion resistance). Unclad sheets are not specifically designated.
About sizes and embossed sheets
Along with corrugated aluminum sheet, embossed sheets are produced in a wide range of colors and various textures (among the most common are “orange peel” and “wave”). The embossing depth is usually 0.08-0.25 mm.
Embossing - obtaining relief images on the surface by extrusion, makes relief and embossed aluminum sheets a kind of “intersecting sets”. But the existence of “dividing lines” is obvious. Embossed aluminum sheets place emphasis on design, including color. Therefore, embossed sheets with a thickness of only a few tenths of a mm can be offered. There is no need to talk about corrugations with such a thickness of the base. In the purpose of corrugated aluminum sheets, functionality prevails, although manufacturers also always keep their appearance in mind.
The corrugated aluminum sheets presented in the assortment of suppliers, as a rule, have a thickness from 1.2 to 5 mm - 1.2, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0 mm. The height of the relief (convexities of the pattern) is taken into account separately.
The most popular sizes of embossed aluminum sheet are 1200x3000 and 1500x3000 mm. But there are others: 1000x2000, 1250x2500, 1200x6000, 1500x4000, 1500x6000.
Pattern and color
In corrugated aluminum sheets, the minimum height of the relief (pattern convexities) is 0.1-0.3 of the nominal base thickness, but not less than 0.5 mm.
Corrugated aluminum sheets are distinguished by the number and shape of convex elements. If we talk about “standard” corrugation, then the fragments of the pattern are formed by one, two or five identical corrugations. Since the riffles are similar in shape to lentils, the term “lentil corrugation” is used (including in technical documentation). In sheets with lentil corrugations, the distance between the corrugations is taken to be 20, 25 or 30 mm.
The pattern may consist of single riffles located perpendicular to each other (Lentil sheet). If the riffles are arranged two side by side, it is a “Duet” sheet; if there are five, it is a “Quintet” corrugated aluminum sheet.
In Diamond or Diamond sheets (sometimes spelled Brilliant), the grooves are shaped to resemble a stylized diamond crystal.