Aluminum sheet AD1N belongs to the category of food rolled products. It is produced in accordance with State Standard 21631.
1
AD1 aluminum sheet has become widespread in various branches of modern industry. Its most common variety is considered to be rolled AD1N. This is understood as AD1 sheets supplied to consumers in a cold-worked state. Hard work makes it possible to obtain a less elastic, but at the same time much more rigid profile, which is used in electrical engineering, mechanical engineering, medicine, and construction.
The main consumers of AD1N are enterprises of the chemical and food industries.
Aluminum sheet AD1N
This is due to the fact that the aluminum sheets of interest to us do not have a negative effect on the human body and do not interact with aggressive chemical compounds when heated. Of these, you can safely make any utensils for cooking, as well as all kinds of containers and special designs used in the chemical industry. Also aluminum sheet AD1N is characterized by the following advantages:
- Relatively high strength. This property of the described material is due to the fact that it is subjected to processing (cold) pressure. This procedure improves the strength characteristics of standard rolled products AD1.
- Possibility of processing products from AD1N. After it, food sheets can be re-made from the resulting raw materials.
- Unique technology. Anyone (including AD1N) lends itself without problems various types machining (welding, stamping, cutting) and hot or cold forming.
Separately, we note the low weight of AD1N sheets (more on this later), which facilitates the transportation of the material, simplifies the process of its installation and use for its intended purpose.
2
Rolled products from aluminum alloy brand AD1N are characterized by high resistance to corrosion and oxidation. These properties are given to it by copper, magnesium (they are contained in the alloy in an amount of up to 0.05%) and manganese (0.025). The basis of the composition is aluminum. It is available in the finished rental at least 99.3%. Additionally, the following chemical elements are included in the alloy:
- iron - up to 0.3%;
- zinc - no more than 0.1;
- titanium - up to 0.15;
- silicon and iron - up to 0.3.
Work-hardened sheets AD1 can have a normal, increased, as well as high quality surface finish. In most cases, food rolling is made with high quality surfaces. The thickness of AD1N sheets varies from 0.3 to 10.5 mm. At the same time, high-quality profiles are produced with a thickness of not more than 4 mm. The width of the products is 600–2000 mm, the length is 2000–7000.
Work-hardened sheets AD1
On the surface of rolled aluminum there should be no corrosion spots, burn bubbles, tears, slag additives, saltpeter deposits, delaminations, whitish blurred areas, cracks, metal inclusions. Sheets are always cut at right angles. On the edges of the profiles, tears and burrs are not allowed. And the cut oblique must be such that the products fully comply with the requirements of the standard in length and width.
The tensile strength (it is called short-term) of hard-worked products is 98 MPa (GOST 18591), tensile strength - 130-145 MPa, density - 2710 kg / cu. m., electrical resistance (specific index) - 29.2 Ohm * m, relative elongation - 3-5%. The theoretical weight of the aluminum products we are interested in depends on the accuracy of their manufacture. One meter of rolled metal has a mass of 0.473–58.644 kg (normal alloy in terms of accuracy) and 0.482–58.701 kg (increased accuracy).
The weight of specific hard-worked sheets depends not only on their length and width, but also on their thickness.
3
Rolled AD1N is accepted in batches. The analysis of the chemical composition is carried out on two sheets. The batch size does not matter. When conducting chemical analysis the elements that we talked about above are controlled. In some cases (if required by the consumer), a check can be made for the presence of alloying metallurgical components in finished sheets.
Rolled AD1N is accepted in batches
Every tenth product from one batch is analyzed by size. But the check for deviation from the flatness of the profiles and the quality of their surface is performed on all sheets without exception. Special Analysis mechanical characteristics AD1H is not carried out. The technology itself assumes that they will fully meet the requirements. To check the quality of finished aluminum products, a goniometer (analysis of geometric parameters) and a profilograph (roughness) are used.
If it is required to determine the microstructure of rolled products, the manufacturer uses eddy current technology or a more common metallographic technique for this purpose. The latter is considered more reliable. Sheets AD1N are packed in a special anti-corrosion container and transported according to the standard 9.011. The batch must indicate the grade of the alloy, the thickness of the rolled products and its condition. Such marks are usually applied with paint on the outside of the top sheet. Sometimes the marking is knocked out (branded). Only fast-drying inks should be used for labeling products.
Hardened only by pressure with high anti-corrosion performance and high ductility, but its strength is low. A huge number of semi-finished products are produced from technical aluminum of this brand. It is well deformed, poorly cut and lends itself perfectly to all types of welding. The purity of technical aluminum guarantees its high anti-corrosion properties, due to which it is often used as a cladding material for high-strength aluminum and duralumin alloys that are less resistant to corrosion.
AD1 material properties
AD1 has a chemical composition according to GOST 4784-97 and includes at least 99.3% aluminum. Sale of aluminum.
An increase in the percentage of alloying composition increases the strength of aluminum, and the ductility decreases. The same goes for various temperature conditions. With an increase in operating temperature, the ductility of aluminum increases, and the strength decreases. At temperatures above the melting point (for pure aluminum, about 656 ° C), the strength of the alloys drops significantly. The higher the degree of contamination, the worse the mechanical properties will manifest. Below is a table of mechanical properties for AD1 material in various states at a temperature of 20 °C and at values up to 200 °C.
Meanwhile, AD1 has a large percentage of relative elongation, due to which it is possible to produce a huge variety of parts and blanks from it by deep drawing. Approximate values of this parameter can be compared in the histogram below for AD0.
As well as semi-finished products from AD0 - AD1 are produced in various states. Annealed blanks (M) have the highest ductility. Hard-worked workpieces have the greatest strength and hardness. Hard work is hardening by deformation by mechanical action on workpieces, which makes it possible to obtain stronger workpieces from soft materials. Hardening can be designated as H, H2, H3, H4. The strongest workpieces from AD1 are marked with the letter H, followed by half-worked, hard-worked for a third and a quarter of the workpiece.
As you can see, there are no serious differences in plasticity between annealed and unannealed AD1 blanks. but hard-worked products are significantly superior to soft and untreated blanks in terms of strength.
Release form
Various blanks are produced from AD1 in a wide range:
According to the state of the material, they are:
- No additional processing
- M - annealed,
- H - hard-worked and H2, H3, H4 - half, third and quarter hard-worked.
Due to their high ductility, corrosion resistance and good weldability, they are widely used in various fields.
Application area
Technical aluminum AD1 is used for cladding workpieces and parts that are less resistant to corrosion.
From AD1 it is possible to obtain many products by deep drawing. Rolled sheets are widely used to create corrosion-resistant unloaded structural elements. From it you can make various tanks. However, the corrosion resistance of technical aluminum in different environments manifests itself differently, since it contains pollution and it is worth paying attention to Special attention when choosing a corrosion-resistant material to work in a very specific environment.
Since the reflectivity of aluminum is high, technical aluminum is used to produce thermal screens that reflect up to 80% of heat. From sheets AD1, ventilation shaft boxes and various tanks are produced.
The high plasticity of annealed sheets is in demand in the production of seals for permanent joints, that is, washers, various gaskets and rivet fasteners.
AD1 welds well without restrictions and gives the same strong seam as the material itself in the annealed state. For this reason, it can be used in welded structures.
aluminum sheet
aluminum sheet
Aluminum sheets are corrosion and acid resistant organic origin, high ductility, good electrical and thermal conductivity. Upon contact with oxygen, an Al 2 O 3 oxide film is formed on the surface of the material, which protects products from aggressive environments and rust formation. To enhance the initial properties of the metal and its alloys, cladding is used - a thermomechanical coating based on aluminum with the addition of alloying elements and impurities (zinc, magnesium, copper, silicon, manganese, iron, titanium).
The scope of aluminum sheet is determined by the initial characteristics of the material:
- acid-resistant- used for the production of fuel tanks, welded tanks, rivets, radiators and vehicle frames.
- technical- economic insulating and finishing material.
- food- suitable for manufacturing freezers, canisters, cisterns, sinks, kitchen equipment.
Perforated blanks are in demand in the construction industry. Textured (corrugated) sheets are used for arranging technical platforms and stairs, floors in workshops and bodies trucks. Corrugated material with different wave heights is intended for the construction of roofing.
Aluminum sheet is produced from flat ingots by cold and hot rolling. The first method is suitable only for the manufacture of layers up to 6 mm thick.
Classification according to GOST 21631-76
The main document regulating the production of smooth, corrugated and perforated aluminum sheet is GOST 21631-76.
| Categories, classes, groups | Letters, indices | Notes | |
| By type of manufacture | Unclad (no protective coating) | No designation | |
| Technological plating | B | The layer thickness is 1.5% of the actual sheet thickness. Facilitates the rolling process and improves appearance semi-finished products. | |
| Plating is normal | BUT | The layer thickness is 2% with a sheet thickness of 1.9 mm, 4% - with a sheet thickness of less than 1.9 mm. Performs the function of anti-corrosion protection. | |
| Thickened plating | At | The layer thickness is 4% with a sheet thickness of 0.5-1.9 mm, 8% - with a sheet thickness of 1.9 mm. Gives decorative properties to the surface. | |
| Material composition | Without heat treatment | No designation | Sheets are allowed to be annealed, with the exception of products made of alloy VD1 |
| Annealed | M | It is possible to manufacture without heat treatment - in cases where the mechanical properties, surface quality and non-flatness are within the normal range. | |
| Hardened, artificially aged | T1 | ||
| Hard-worked | H | Cold working increases strength, tear resistance and hardness. | |
| Hardened, naturally aged | T | ||
| Semi-hardened | H2 | ||
| Hard-worked, hardened and naturally aged | TN | ||
| Finish quality | Normal | No designation | Produced from all grades of aluminum and alloys based on it, regulated by GOST 21631-76. |
| Increased | P | ||
| High | AT | The maximum sheet thickness is 4 mm. They are made of aluminum under the brands A7, A6, A5, A0, AD00, AD0, AD1, AD and aluminum alloys under the brands AMts, AMg2. | |
| Manufacturing accuracy | Normal | No designation | |
| Increased | P | By one or more parameters - length, width, thickness. |
Domestic producers of rolled aluminum cover 80% of needs Russian market, while the production of sheets accounts for about 70% of the total production. Imported materials are marked according to ISO 209-1 ( international standard) and EN 573 (European standard).
Decryption examples
- Sheet AMg2.M 07P × 1200 × 2000P GOST 21631-76. AT- a sheet of aluminum alloy grade AMg2 in the annealed state, 0.7 mm thick, 1200 mm wide, 2000 mm long, with increased manufacturing accuracy, high surface finish.
- Sheet AD1 5×1000×2000 GOST 21631-76- a sheet of aluminum brand AD1, without heat treatment, 5 mm thick, 1000 mm wide, 2000 mm long, normal workmanship, normal surface finish.
- Sheet AD1.M 5×1200×2000 GOST 21631-76. P- the same, annealed, increased surface finish.
- Sheet AD1.N2 5P×1000P×2000 GOST 21631-76. P- the same, semi-hardened, increased manufacturing accuracy in thickness and width.
- Sheet D16.B.TN 2×1200×2000 GOST 21631-76. P- a sheet made of aluminum alloy grade D16 with technological plating, hard-worked after hardening and natural aging, 2 mm thick, 1200 mm wide, 2000 mm long, normal manufacturing accuracy, high surface finish.
- Sheet D16.B.TN 2P × 1200 × 2000 GOST 21631-76. P- the same, increased accuracy of manufacturing in thickness.
aluminum sheet weight
To calculate the theoretical mass aluminum sheets(kg/linear meter) the following formula is used:
Wherein:
- H max - the highest rate thickness (in mm);
- H min - the smallest indicator of thickness (in mm);
- B max - the largest indicator of width (in mm);
- In min - the smallest indicator of width (in mm);
- γ is the density of the alloy (in g/m³).
According to GOST 21631-76, the weight is calculated at a declared density of 2.85 g / m³, which corresponds to the grades B95, B95-1, B95-2. For other aluminum alloys, conversion factors apply.
Data for sheet width 1000 mm:
| Declared thickness, mm | Theoretical weight in m² with nominal manufacturing accuracy in terms of width and thickness, kg | Theoretical weight in m² with increased manufacturing accuracy in thickness and normal - in width, kg | Theoretical weight in m² with increased manufacturing accuracy in terms of width and thickness, kg | Theoretical weight in m² with normal manufacturing accuracy in thickness and increased accuracy in width, kg | Theoretical weight in m² of a sheet of alloys AMg3, AMg5, AMg6 - without heat treatment and annealed, kg |
| 0,3 | 0,715 | 0,758 | 0,758 | 0,715 | - |
| 0,4 | 1,001 | 1,03 | 1,029 | 1 | - |
| 0,5 | 1,288 | 1,316 | 1,315 | 1,286 | - |
| 0,6 | 1,545 | 1,574 | 1,572 | 1,544 | - |
| 0,7 | 1,831 | 1,86 | 1,858 | 1,829 | - |
| 0,8 | 2,117 | 2,146 | 2,144 | 2,115 | - |
| 0,9 | 2,404 | 2,432 | 2,43 | 2,401 | - |
| 1 | 2,647 | 2,69 | 2,687 | 2,644 | - |
| 1,2 | 3,219 | 3,262 | 3,259 | 3,216 | - |
| 1,5 | 4,006 | 4,092 | 4,088 | 4,002 | - |
| 1,6 | 4,292 | 4,378 | 4,374 | 4,288 | - |
| 1,8 | 4,864 | 4,922 | 4,917 | 4,86 | - |
| 1,9 | 5,151 | 5,208 | 5,203 | 5,145 | - |
| 2 | 5,437 | 5,494 | 5,488 | 5,431 | - |
| 2,5 | 6,796 | 6,896 | 6,889 | 6,789 | - |
| 3 | 8,155 | 8,298 | 8,29 | 8,147 | - |
| 3,5 | 9,586 | 9,7 | 9,69 | 9,576 | - |
| 4 | 11,016 | 11,102 | 11,091 | 11,005 | - |
| 4,5 | 11,447 | 12,504 | 12,492 | 12,435 | - |
| 5 | 13,806 | 13,878 | 13,864 | 13,793 | 14,307 |
| 5,5 | 15,267 | 15,31 | 15,295 | 15,252 | 15,769 |
| 6 | 16,629 | 16,658 | 16,641 | 16,613 | 17,203 |
| 6,5 | 18,063 | 18,091 | 18,073 | 18,045 | 18,636 |
| 7 | 19,496 | 19,525 | 19,506 | 19,477 | 20,07 |
| 7,5 | 20,93 | 20,959 | 20,938 | 20,909 | 21,503 |
| 8 | 22,292 | 22,335 | 22,313 | 22,27 | 22,937 |
| 8,5 | 23,725 | 23,768 | 23,745 | 23,702 | 24,37 |
| 9 | 21,159 | 25,202 | 25,177 | 25,134 | 25,804 |
| 9,5 | 26,592 | 26,635 | 26,609 | 26,566 | 22,237 |
| 10 | 27,954 | 27,983 | 27,955 | 27,926 | 28,671 |
| 10,5 | 29,388 | 29,416 | 29,387 | 29,359 | 30,105 |
Alloys used in the production of aluminum sheets
For the production of sheets, aluminum grades A0, A5, A6, A7 are used (the chemical composition is regulated by GOST 11069-74), as well as AD, AD0, AD00, AD1 (according to GOST 4784-74). The range also includes products from heat-strengthened and non-heat-strengthened alloys of the following types:
- high-strength;
- weldable, standard strength;
- normal strength (dural);
- highly plastic, medium strength (maglia);
- highly plastic, low strength - with and without alloying.
Production Capabilities
| Aluminum/alloy grade | Without heat treatment | M | H2 | H | T | T1 | TN |
| A0 | + | + | + | + | |||
| A5 | + | + | + | + | |||
| A6 | + | + | + | + | |||
| A7 | + | + | + | + | |||
| HELL | + | + | + | + | |||
| AD0 | + | + | + | + | |||
| AD1 | + | + | + | + | |||
| AD00 | + | + | + | + | |||
| AMC | + | + | + | + | |||
| AMcS | + | + | + | + | |||
| AMg2 | + | + | + | + | |||
| AMg3 | + | + | + | ||||
| AMg5 | + | + | |||||
| AMg6 | + | + | |||||
| AMg6B | + | + | |||||
| AMg6U | + | ||||||
| AB | + | + | + | + | |||
| D1A | + | + | + | ||||
| D16A | + | + | + | + | |||
| D16B | + | + | + | ||||
| D16 | + | + | + | ||||
| D16U | + | + | |||||
| B95-1A | + | + | + | ||||
| B95-1 | + | ||||||
| B95-2A | + | + | + | ||||
| V95-2B | + | ||||||
| VD1A | + | + | + | ||||
| VD1B | + | + | + | + | |||
| TD1 | + | + | + | + | |||
| AKMA | + | + | + | + | |||
| AKMB | + | ||||||
| AKM | + | ||||||
| B95A | + | + | + | ||||
| 1915 | + | + | + | ||||
| D12 | + | + | |||||
| MM | + |
Aluminum sheet dimensions according to GOST 21631-76
Sheet dimensions depend on the brand of material used and the type of processing:
- The width varies between 600-2000 mm.
- The minimum length is 2000 mm, the maximum is 7000 m.
- Sheet thickness according to GOST 21631-76 - from 0.3 to 10.5 mm.
Rolled aluminum is supplied in sheets of measured, multiple measured or random length. In the second case, the pitch is 500 mm.
Maximum deviations in width, in mm:
Maximum deviations in length, in mm:
On one side of the aluminum sheet, the grade and condition of the material, the presence and type of cladding, overall dimensions, batch number and quality control stamp are indicated. Data is applied at a distance of no more than 3 cm from the edge. When the thickness of rolled aluminum is less than 1 mm, only the top sheet of the pack can be marked.
Our company sells non-clad aluminum sheet ADM of various thicknesses and cutting. Affordable prices for quality products of domestic and foreign manufacturers. Sale of sheet aluminum is carried out from a warehouse in Moscow or under the order. Favorable terms of cooperation for organizations, wholesale and retail buyers.
Service
Deliveries of technical aluminum grade AD1M are carried out in sheets and rolls. We provide qualified services for grinding, anodizing, bending and cutting products to size. We produce various designs from aluminum sheets according to customer's sketches. Temporary anti-corrosion protection, packaging, transportation and storage in accordance with GOST 9.510-93.
Characteristics
Sheets are made in accordance with GOST 21631-76 from aluminum grade AD1 with a chemical composition in accordance with GOST 4784-74. Sampling and preparation of samples for determination chemical composition non-ferrous metals and alloys are carried out according to GOST 24231-80. Sheets AD1 are characterized by high corrosion resistance, ease of machining and molding. The letter marking indicates the deformable metal, and the digital marking indicates the percentage purity of the alloy
According to the state of the material, they distinguish:
Aluminum sheet AD1M is a soft profile annealed at a certain temperature. As a result of hot annealing, sheet aluminum becomes more ductile and malleable. To partially restore the hardness of the alloy, temper rolling is used - rolling with a reduction of 2-5%.
Aluminum sheet AD1N - work-hardened profile, hardened by plastic deformation. As a result of cold working by pressure, the strength of aluminum sheet increases. Simultaneously with an increase in the hardness of the material, its ductility and impact strength decrease. Aluminum sheet AD1N2 is made from an alloy cold-worked for one second. Such aluminum combines good strength and mechanical properties.
Unclad surface with normal finish quality. Normal manufacturing accuracy in thickness, width and length.
Scope of application
Sheets AD1M and AD1N are used for the manufacture of various parts in mechanical engineering. They are used to produce decorative elements, capacitors and containers for the chemical industry.