Why Is Duralumin Used in Aircraft?

 "Large aircraft" generally refers to transport aircraft with a total take-off weight exceeding 100 t, including military and civilian large transport aircraft, as well as trunk airliners with more than 150 seats. Aluminum alloys have low density, high specific strength, strong corrosion resistance, and easy thermal conductivity. It has a series of advantages such as good plasticity and processing performance, low cost, etc., and has always been the main material for the structure of large aircraft in aviation.

The traditional aluminum alloys for large aircraft structures are mainly high-strength 2000 series((2024, 2224, 2324, 2424, 2524, etc.) and ultra-high-strength 7000 series(matweb aluminum 7075, 7475, 7050, 7150, 7055 , 7085, etc.) After the 1980s, although there was aluminum lithium alloy, rapid solidification aluminum alloy, composite materials, the traditional 2000 and 7000 aluminum alloys still show strong vitality.

7075 aluminum alloy is a high-strength, heat-treatable wrought alloy developed by Alcoa in 1943. The alloy contains zinc, magnesium, chromium and copper as hardeners, as well as small amounts of iron, silicon, manganese and titanium. Al-7075 is much stronger than carbon steel after heat treatment. The common tempers are 7075-T6, T651, T7351, T73, T76, T7651, O, W, W51, etc.

The success of the 7150-T77 aluminum not only meets the requirements of corrosion performance, but also does not sacrifice the strength of the alloy. Later, by adjusting the alloy composition, reducing the content of impurity elements such as Fe and Si, and improving the production process, Alcoa developed the 7055-T77 ultra-high strength plate and the 2524-T3 ultra-high fatigue strength plate.

2024 aircraft aluminum alloy is a typical hard aluminum alloy in the aluminum-copper-magnesium system, whose composition is more effective. What are the al 2024 properties? It has high strength and certain temperature resistance, and can be used as a working part below 150 degrees. After heat treatment, the 2024 aluminum alloy has undergone solid solution treatment to obtain relatively high compressive strength and ductility. Because its strength is very high, it is generally used to produce skins, roof beams, bulkheads, and wings by plane.

The fracture toughness and fatigue resistance of 2524-T3 clad aluminum plate are more than 30% higher than that of 2024-T3 clad aluminum plate, and it is considered to be the most ideal aircraft skin material at present. The strength of 7055-T77 alloy is 25% higher than 7075-T651 and 8~12% higher than 7150-T77, while the fracture toughness and stress corrosion resistance are comparable to 7050-T61.

Original Source:https://www.aircraftaluminium.com/a/why-is-duralumin-used-in-aircraft.html

5052 ABS Aluminum Sheet

 The ABS aluminum plate is mainly used for the four doors, hood panel, trunk lid, lid,etc. The alloys involved in car body panels include 6016, 6022, 6111, 6181, 5754, 5182 and 5052. The size of aluminum alloy plate for car body is mainly concentrated in the thickness of 0.7-3mm and the width of 900-2130mm.

5xxx alloy is an aluminum alloy that cannot be strengthened by heat treatment. It has good corrosion resistance and welding performance. However, it may produce Ludes lines and delayed yielding during processing deformation in the annealed state. Therefore, it is mainly used for the inner panels. 5083 and 5052 aluminium plate are used most.

5052 aluminum sheet is a widely used rust-proof aluminum plate with high strength, especially fatigue resistance, high plasticity and corrosion resistance and good weldability. 5052 aluminum plate is an aluminum alloy that cannot be strengthened by heat treatment. It is suitable for parts with complex shapes such as inner panels of the body.

5052 aluminium plate is mainly composed of aluminum and magnesium, and the Mg content is 2.2-2.8. In terms of mechanical properties, the tensile strength is 170-305MPa, and the elongation is 9-22%. It has a wide range of applications and is suitable for chassis and cabinet materials, sheet metal parts of transportation vehicles, ships, hardware products, electrical enclosures,etc.

5052h32 aluminum sheet is a popular type among the 5052 aluminium sheets. It shows high fatigue strength, good cold workability, excellent polishing effect and excellent corrosion resistance, which is an ideal material for a variety of vehicle skins, such as delivery cars, trailers, marine diesel tanks, truck air brake boxes, gasoline or lube oil pipes, etc.

The use of alu 5052 for cars can the car's own weight without reducing the car's load, thereby reducing the body's center of gravity and making the car run more smoothly and comfortably. Welcome to leave message below to inquire what you need.

Original Source:https://www.autoaluminumsheet.com/a/5052-abs-aluminum-sheet.html

5754 H111 H22 Properties

 As a typical Al-Mg alloy with medium strength, good corrosion resistance and weldability, 5754 aluminum alloy can be widely used in automobiles, transportation, aerospace, ships, etc. It is usually used in the forms of aluminum sheet. The common tempers are aluminum 5754 h22 and h111.

The so-called basic heat treatment (sometimes also called conventional heat treatment) is a heat treatment in which thermal action is the main process, that is, only thermal action has a decisive influence on the internal organization, structure, state and properties of aluminum.

The chemical composition, shape and size of the material do not change or only undergo small changes before and after heat treatment. Sometimes the shape changes greatly, but it can be recovered by subsequent mechanical actions such as correction.

The basic forms of heat treatment are: ingot homogenization degradation, annealing based on recovery and recrystallization, annealing based on changes in solid solubility, solution treatment (quenching), aging, and deformation heat treatment.

5754 h111 properties

Mechanical properties

Tensile strength σb (MPa): 165～265.

The national standard for aluminum plate and strip (GB/T 3880-2006) is a unified standard for aluminum alloy plate and strip materials.

5754 h111 heat treatment process

1) Homogenization annealing: heating at 440°C; holding for 12-14h; air cooling.

2) Rapid annealing: heating at 350～410℃; holding time 30～120min; air or water cooling.

3) High temperature annealing: heating at 350~420℃; when the thickness of the finished product is ≥6mm or <6mm, the holding time is 2~10min or 10~30min; air cooling.

4) Low temperature annealing: heating at 250~300℃ or 150~180℃; holding time is 1~2h, air cooling.

5754 h22 properties

Control standard	Rm/MPa	Rp0.2/MPa	A/%
EN485-2:2008	220-270	>130	>10

As a aluminum sheet manufacturer for special vehicles, Haomei Aluminum has different tempers of 5754 aluminum plates. Welcome to leave message below to inquire what you need.

Original Source:https://www.aluminumtankerplate.com/a/5754-h111-h22-properties.html

5052 5083 Navel Aluminum Sheet

 The working environment of ships requires structural materials to have certain mechanical strength, fatigue strength, elongation and impact resistance. However, it is usually difficult for high-strength aluminum alloys to have excellent corrosion resistance and weldability at the same time, so the aluminum alloys used for ships generally choose corrosion-resistant and weldable aluminum alloys with medium strength. 5000 and 6000 series naval aluminum alloys are usually chosen.

5000 series aluminum alloys are non-heat treatment alloys. 5052 and 5083 aluminum alloys have appropriate mechanical strength and fatigue resistance, and excellent corrosion resistance, weldability and machinability. They are widely used as alloys for corrosion-resistant weldable structures in ships and other fields.

Marine yachts need to use 5083 aluminum plates, and domestic park boats generally use 5052 aluminum plates. 5083 aluminum plates are aluminum-magnesium alloys, typical anti-rust aluminum plates. Its corrosion resistance, processability and strength meet the processing requirements of marine aluminum plates.

The common tempers of 5083 aluminum are H116, H321 and H112. It is mainly used in decks, engine pedestals, ship sides, ship bottom panels and other components of yachts, fishing boats, work boats, sand ships and other ships.

5052 plate is one of the 5000 series aluminum alloys. The Mg content is 2.2%-2.8%. It has the characteristics of light weight, medium strength, good corrosion resistance and weldability, and easy processing and forming. Tensile strength can reach 215-265Mpa, elongation is <5%.

The application of 5052 in the shipbuilding industry requires it to have high corrosion resistance against marine atmosphere and seawater corrosion. And although the existing 5052 aluminum alloy material also has certain anti-corrosion ability, it can not fully meet the application requirements of the shipbuilding industry.

Haomei 5052 marine grade aluminium and 5083 aluminum plates has been certificated by CCS, DNV, ABS, BV and LR, which has successfully entered the world shipbuilding market, and is loved by the Philippines, Myanmar, Vietnam, Thailand, Indonesia and other Southeast Asian and North American shipbuilding markets.

Original Source:https://www.marinealu.com/a/5052-5083-navel-aluminum-sheet.html

Alloys of Aluminum Flashing Strips

 Aluminum flashing strip is a kind of aluminum flexible strip with a certain anti-corrosion function, and it has certain applications in some industrial production and some daily life. The main application of aluminum flashing strips is some construction industries. It can be used as some building materials, so that it can guarantee the warmth retention and some water resistance of the building to a certain extent. The common alloys are 1060 and 8011.

The advantages of 1060 aluminum strip are thermal conductivity, electrical conductivity, and good ductility. 1060 pure aluminium strip is widely used in making gaskets, auto parts, capacitors, food packaging, electronic labels and other industries.

Aluminum 8011 has higher advantages because of the addition of Al-F. It is often used to make aluminum foil, and its performance is better than that of pure aluminum. It is made of electrolytic aluminum with a purity of more than 99% and is rolled.

It has excellent electrical conductivity and shading performance, and has extremely high moisture resistance, gas barrier and taste retention. Aluminum foil has a highly dense metal crystal structure, which can completely block any gas, water vapor and light.

Advantages of aluminum flashing strip

1. Good tensile strength, good flexibility. It can stick to various irregular roofs.

2. The construction is simple and does not need professional construction. Just remove the isolation film of the lower layer of the material, and stick it in the right position.

3. The self-extension rate reaches 400-1000. It has a strong adaptability to the thermal expansion and contraction of the metal roof. With the unevenness of the roof, it is firmly attached to the roof so that the air is completely isolated from the metal roof. It can not only achieve waterproof function but also play an anti-corrosion effect.

4. The solar radiation absorption coefficient is extremely low 007, which has excellent heat insulation performance and can reflect more than 93% of radiant heat.

5. The surface of the material is made of metal aluminum foil, which is a soft metal film. The metal aluminum foil has the characteristics of moisture-proof, air-tight, heat-insulating, anti-ultraviolet light, and abrasion resistance. The self-adhesive layer is aging-resistant butyl rubber, which has strong cohesive force. Welcome to leave message to inquire aluminum 8011 and 1060.

Original source: https://www.aluminumstrip24.com/news/alloys-of-aluminum-flashing-strips.html

3003 3004 Food Tray Aluminum Foil

 Aluminum food tray is made of aluminum foil with certain strength and toughness, which is stamped and formed. Compared with other materials, aluminum foil has the characteristics of light material, high barrier, anti-ultraviolet, moisture-proof and anti-corrosion, and long shelf life. At the same time, because aluminum foil can better maintain the freshness and moisture of food, it is more in line with the concept of environmental protection and healthy life of modern people.

The aluminum food contains can be processed into various shapes, and is widely used in the packaging of pastry, takeaway, cooked food, instant noodles, convenient lunch boxes and other food fields. It can be heated directly with the original packaging in the ovens, microwave ovens, steamers and other kitchen utensils.

3003 aluminum foil is often used to make high-end food tray. The elongation of 3003 is lower than that of 8011 aluminum foil, but the tensile strength of 3003 is higher. 3003- H18, 3;003-O and 3003-H24 aluminum foils have multiple advantages such as clean oil removal, less holes, good product shape, no deformation during cutting, and easy adhesion.

3004 aluminum foil is a 3000 series hot-rolled aluminum foil. 3004 aluminum foil has high hardness, good load-bearing, and better stamping effect than 3003 aluminum foil. It can be applied to aluminum foil container, food packaging, honeycomb aluminum foil, etc. On the basis of ensuring the low price of 8011 alloy, 3004 aluminum foil also ensures the high strength of 3003 alloy, and its strength is higher than that of 3003 alloy.

Aluminum food foil price usually depends on the alloy grade, specification, technical requirements and dosage. Among them, the aluminum foil alloys are 8011, 3003, 3004, 1060,etc. Generally, the price of 3-series aluminum foil is higher than that of 8-series aluminum foil.

In terms of performance, the main requirements are for tensile strength and elongation. If the elongation is high, stamping is not easy to crack. At the same time, it is required to be free of oil and dirt to ensure that it meets the requirements of food packaging. Welcome to leave message below to inquire what you need.

Original source: https://www.alumfoils.com/a/3003-3004-food-tray-aluminum-foil.html

The Main Series of Colored Aluminum Sheets

 The colored aluminum sheet refers to aluminum sheet coated with one or several layers of polyester, fluorocarbon polyester and other organic coatings after surface processing, and then baked and cured. According to the different performance and application fields, color coated aluminum can be divided into two categories: functional type and ordinary type.

The downstream industries of the color coated aluminum coil are mainly construction, industry and food packaging industries such as construction needs of commercial office buildings, high-end hotels, urban rail transit and railway stations, containers, reefers, tankers,cans.

1060 aluminum alloy

1060 painted aluminum sheet belongs to the pure aluminum sheet. The density is 2.71. With good ductility, it has excellent forming processing characteristics, high corrosion resistance, long service life and low cost, but its strength and rigidity are low.

3003 coated aluminum sheet

It belongs to the aluminum-manganese alloy with a density of about 2.73. Due to the manganese alloy element (the content is between 1-1.5%), the material hardness and tensile properties are better than those of the 1 series. Since it has excellent anti-rust properties, 3003 aluminum is also known as "rust-proof aluminum".

3004 color coated aluminum

In addition to manganese, the 3004 aluminum plate also adds magnesium, and the content is between 0.8-1.3%, so 3004 alloy has higher strength than 3003. It also has excellent formability, and good corrosion resistance, which is the most widely used color aluminum.

5052 colored aluminum sheet

The density of 5052 Al-Mg alloy is 2.68. The alloy composition is mainly magnesium, and its content is between 3-5%. The main features are low density, high tensile strength and high elongation. Its tensile strength is higher than that of the 3 series.

The aluminum coil stock colors is usually toned according to Ral or PANTONE color card. The paint is usually fluorocarbon or polyester paint. The popular colors are cappuccino, clay, coffee, espresso, silver metallic, tan, and white.

Haomei Aluminum dopts the international advanced roller coating process, which can ensure that there are no dust particles on the surface of the color-coated aluminum coil and no color difference. We only need you to provide the color card code to color for you, or you can send color samples to us.

Original source: https://www.hm-alu.com/a/the-main-series-of-colored-aluminum-sheets.html

Types of Aluminum Offset Printing Plates

 In book production, printing is an important production link and printing costs account for a large proportion of book production costs. At this stage, there are mainly three types of printing plates: PS plate, CTP plate and CTCP plate.

PS plate

PS plate offset printing is a photosensitive offset printing plate with a multi-layer structure. It uses an aluminum plate as a support, and the aluminum plate has been processed by various processes, the purpose of which is to endow it with photosensitive properties and printability.

How to choose PS plate? There are three tips: The choice should be based on the right size, proper printing endurance to match the printing quantity and suitable quality. For example, The size specifications of the PS plates include length, width and thickness specifications, and the PS plate should be selected according to the printing plate size requirements of the printing machine used.

CTP Plate

Compared with PS plates, there are more types and varieties of CTP plates like silver salt ctp plate, thermal ctp plate and violet ctp plate. Among them, thermal CTP plate is more popular. The thickness of the aluminum plate for CTP plates is generally 0.280mm, which is slightly thicker than the PS plate currently produced (the thickness of the PS plate base is 0.270mm±0.005mm). It is certain that Haomei Alumium has different thicknesses for you to choose from.

CTCP plate

CTCP technology images digital information on ordinary PS plates. The consistency of the printing plates ensures the normal operation of all printability. Printing companies do not need to worry about various problems caused by changes in printing suitability, and do not need to spend a lot of time and energy to complete the matching of aluminium offset printing plates and printing machines.

Haomei Aluminum has all these different kinds of printing plates. Welcome to leave message below to inquire what you need.

Original source: https://www.alumhm.com/a/types-of-aluminum-offset-printing-plates.html