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

What Parts Of a Car Are Aluminum

The body-in-white is connected by stamping parts of different sizes through welding or other processing methods. Different materials are used for each part according to the needs. Different materials have a decisive effect on the stamping process. So first of all, what materials are used in the body in white?

1. Steel: Needless to say, most of the cars on the market are still mainly made of steel body, which is the most mainstream body material.

2. Aluminum: The density of aluminum is about one third of that of steel. Due to the demand for lightweight, more and more car manufacturers have begun to consider aluminum body solutions. The traditional car brands that respect the application of aluminum materials in the body mainly include Audi, Jagua, TESLA and NIO.

What parts of a car is aluminum? Before answering this question, there are two concepts we need to know first.

Strength

Strength is divided into yield strength and tensile strength. To put it simply, the yield strength is the strength when the material begins to deform irreversibly (for example, the pipe is bent and cannot be straightened), which characterizes the ability of the material to resist deformation.

Tensile strength refers to the strength of the material when it is broken (the pipe is broken), which characterizes the ability of the material to resist damage. In general, the tensile strength is always greater than the yield strength.

Ductility

A physical quantity that expresses the deformation ability of a material.

The strength of steel for bodywork covers a huge range from 200 megapascal (MPa) to the highest 2000 MPa. We call steels with a tensile strength above 500 MPa AHSS. The performance of different steel plates is too different, so the safety of the car cannot be measured only by the thickness of the steel plate.

At present, 5, 6, and 7 series aluminum sheets are mostly used on the car body. Among them, the 5000 series aluminum like 5182 aluminum body panel is for the interior plate of car door or hood panel. The outer panel of doors, engine covers, and side panel generally choose 6000 series. The 7 series is regarded as a high-strength material among aluminum alloys, and its tensile strength is generally 500 MPa, which is already the limit of aluminum.

Compared with the steel just mentioned above, it is basically the entry-level level of advanced high-strength steel. However, the natural advantage of aluminum is its low density, which is only one-third of that of steel. Under the same volume, the weight is only one-third of that of steel, so it still has a lot of room for use in the car lightweight.

The most important thing for the selection of automotive materials is safety in the face of collisions. For crash safety, the body can be divided into two main areas: the energy-absorbing area and the safety area.

Different regions have very different requirements for materials. For example, the main function of the front and rear parts of a car including front and rear longitudinal beams require is energy absorption for impacts from the front and rear. The area enclosed by strength and deformation can be roughly considered as the material’s ability to absorb energy.

Of course, we don’t want these energy-absorbing parts to break prematurely during the collision, so a certain elongation is the basic requirement for these parts. The second need is strength. Proper strength and good deformability are the requirements for these parts. 6000 and 7000 series aluminum like 6016 aluminum plate are used.

AIWAYS U5 adopts a body structure of upper body steel and lower body aluminum. At the front end of the lower body as the energy absorption area, different materials such as 5, 6, 7 series aluminum plates, cast aluminum, extruded aluminum, etc. are used to maximize the function of energy absorption.

Original Source:https://www.autoaluminumsheet.com/a/what-parts-of-a-car-are-aluminum.html

Why Is 5083 Aluminum Sheet Used for Fuel Tanker

At present, the widely used tank body materials of oil tankers include carbon steel, stainless steel and aluminum sheet, each of which has its own advantages. In recent years, with the introduction of the concept of lightweight, more and more manufacturers choose aluminum alloy as the tank material. The main alloy grades are 5083, 5754, 5454, 5182 and 5059. Today we focus on the requirements of the tank body material of the tanker and the advantages of the aw 5083 aluminium.

Since the aluminum alloy tanker is lighter than the carbon steel tanker, the fuel consumption during transportation is reduced. When the no-load driving speed is 40 km/h, 60 km/h and 80 km/h, the fuel consumption of the aluminum alloy tank is 12.1%, 10% and 7.9% lower than that of the carbon steel tank, thereby reducing daily operating costs. Aluminum alloy semi-trailer tank truck can reduce tire wear due to its light weight, thereby reducing vehicle maintenance costs.

Oil tanks for transporting aviation gasoline and jet kerosene must be welded with aluminum alloy, because even if stainless steel tanks are used, a very small amount of iron will enter the oil, which is not allowed.

The 16t oil tank truck developed by Mitsubishi Motors Corporation of Japan, except that the tank is welded with aluminum alloy plates, its frame (11210mm×940mm×300mm) is made of aluminum alloy profiles, which is 320kg lighter than the steel frame. The 16t oil tank truck developed by Mitsubishi Motors Corporation of Japan, except that the tank is welded with aluminum alloy plates, its frame (11210mm×940mm×300mm) is made of aluminum alloy profiles, which is 320kg lighter than the steel frame.

The cross-section of the cylinder is a circular arc rectangle, which is based on the consideration of lowering the center of gravity of the vehicle and increasing the cross-sectional area within the range of vehicle dimensions. It is welded with 5083 alloy and the thickness of the plate is 5mm~6mm. The material of the baffle and the head is the same as that of the tank body, which is also 5083 alloy.

The wall thickness of the head is equal to or greater than that of the tank body plate, the thickness of the baffle and bulkhead is 1mm thinner than that of the tank body, and the thickness of the left and right support plates at the bottom of the tank body is 6mm~8mm, and the material is 5A06.

Advantages of 5083 aluminum plate for tanker body

1. High strength. It is not easy to deform. EN 5083 aluminium has high strength, especially high fatigue resistance, high plasticity and corrosion resistance.

2. Good corrosion resistance and long service life. 5083 aluminum plate contains magnesium element, which has good forming performance, corrosion resistance and weldability. It can meet the corrosion resistance requirements of tank car body materials and has a long service life.

3. Good fire resistance and high safety. In the event of strong impact, the tank weld is not easy to crack.

4. Good environmental protection and high recycling rate. Carbon steel materials cannot be recycled and can only be treated as scrap iron, while aluminum alloy tanks can be recycled and reused, and the recycling price is also high.

Original Source:https://www.aluminumtankerplate.com/a/why-is-5083-aluminum-sheet-used-for-fuel-tanker.html

What Are Manufacturing Process of Aluminum Flashing Strips

Aluminum flashing strip is mainly used in some buildings, to a certain extent to ensure the warmth and waterproof performance of the buildings. The surface of the material uses metal aluminum foil (a hard metal film) as the surface layer, so it has the characteristics of moisture-proof, air-tight, heat-insulating, anti-ultraviolet light from the sun, and abrasion resistance.

The rolling of aluminum and aluminum alloys is one of the main aluminum processing methods, and its raw material is flat cast ingot. Through hot rolling, a slab with a thickness of 600 mm can be rolled into a thick plate with a thickness between 6 and 250 mm. Thick plates can continue to be rolled to 2mm and become cold-rolled raw materials. The cold-rolled product is a thin plate with a minimum thickness of 0.2mm. Through further rolling, we can get aluminum foil.

The technology of continuous casting and rolling of aluminum strip is a foreign advanced production technology introduced in the 1980s. It is characterized in that molten aluminum is cast-rolled into slabs with a thickness of 6-10 mm and a width of 650-1400 mm and coiled, and then directly sent to a cold rolling mill for finish rolling.

In the production process of aluminum strip, processes such as ingot casting, heating, hot rolling, and blank opening are omitted, which not only shortens the manufacturing process, but also production cost.

The aluminum strip is processed by the aluminum coil into the slitting equipment, so the processing thickness and tolerance of the aluminum strip are closely related to the slitting equipment. Our aluminum strip slitting equipment is all from Germany, which can effectively control the width tolerance within 0.05mm.

Haomei Aluminum can produce aluminum flat strips with different thickness and width like 2 wide aluminum strip. The grades most commonly ordered by customers include 1050, 1100, 1145, 2024, 5052, 5056, 6061 and 7075. Welcome to leave message below to inquire what you need.

Original source: https://www.aluminumstrip24.com/news/what-are-manufacturing-process-of-aluminum-flashing-strips.html

Can We Use Aluminium Foil in Oven

The melting point of cooking aluminum foil is 660 degrees Celsius, so it can be used for baking or other high-temperature heating methods and it is clean and hygienic. Aluminum foil is suitable for all types of food. These include outdoor grilling, grilling fish, oven-steaming vegetables and baking biscuits.

Generally speaking, it is used for roasting meat, fish and other foods, and when cakes have color requirements. The purpose of using aluminum foil is to facilitate the cleaning of the baking pan and to facilitate the heating of food faster.

Since the melting point of aluminum foil is 660 degrees, far exceeding the temperature of most household ovens, we of course can use it in oven. The current impact of aluminum on the human body actually refers to free aluminum ions, such as the alum used to make rice powder into rice noodles.

If such aluminum ions are taken in excess (note that the premise is excessive , this amount is not easy for ordinary people to reach), which will cause certain problems. Aluminum ions will not be precipitated only by heating.

Generally speaking, there are no strict thickness requirements on aluminum foil. The processing thicknes is usually less than 0.025mm, that is, less than 25 microns. The thickness of normal household aluminum foil is about 10-20 microns. If there is no special requirement when making it, aluminum foil of ordinary thickness is enough.

If it is only used to wrap food, you can buy 10 microns. If you use it for grilled fish, barbecue and other fatty or difficult-to-cook foods, you can buy about 20 microns. The common alloys are 1060, 1100, 3003, 8011, 8021,etc. The common tempers are H14, H16 and H18.

8011 household aluminum foil belongs to 8xxx aluminum foil. Its performance is better than that of pure aluminum foil. The common states are: H18, H16, H22, HO. It is mainly used in food packaging, pharmaceutical packaging, milk cover material, sealing foil,etc. 8011 aluminum foil is also used in cable foil, which is similar to 3003 aluminum foil, but it is not commonly used in electronic foil.

Original source: https://www.alumfoils.com/a/can-we-use-aluminium-foil-in-oven.html

5052 O Aluminum Plate

5052 aluminum sheet and 6061 aluminum sheet are both used for shipbuilding. What are their differences? Their differences are quite large, which is mainly due to the difference in chemical composition and casting process.

5052 O aluminum plate is an Al-Mg alloy aluminum plate. Magnesium is the main alloying element. It has high strength, especially anti-fatigue strength, high plasticity and corrosion resistance. It has good plasticity when hardened in a semi-cold state and low plasticity when hardened by cold work. In addition, it has good anodizing effect.

The main components of 6061 aluminum plate are magnesium and silicon, and forms he Mg2Si phase. It contains a certain amount of manganese and chromium, which can neutralize the adverse effects of iron. Sometimes a small amount of copper or zinc is added to improve the strength of the alloy, but its corrosion resistance does not decrease significantly.

Tempers

5052 aluminum plate: O, H12, H14, H16, H18, H22, H24, H26, H28, H32, H34, H111, H112, H114.

6061 aluminum plate: O, T4, T6, T651

Uses

5052 aluminum is used to make high-strength decorative parts of automobile or hull of small boats. It has good anodizing coloring effect, excellent metal texture and metal hardness, wear resistance and corrosion resistance, long service life, and is widely used in high-end mobile phone casings, high-end air conditioner casings,etc. The corrosion resistance is not as good as 5083

6061 aluminum sheet is mainly used in automatic machinery, precision machining, mold manufacturing and precision instruments, SMT, PC board welding equipment, automobiles, tower buildings, ships,etc.

It has many advantages such as small deformation and uniform quenching in industries such as mobile phone casings, automobile wheels, trolley cases, 3C products, and aerospace. In shipbuilding, its profiles are mostly used. Haomei Aluminum has both of them. Welcome to leave message below to inquire aluminum sheeting price.

Original Source:https://www.marinealu.com/a/5052-o-aluminum-plate.html

Aluminum Foil Uses

Aluminum foil is a kind of rolled aluminum material. It is mainly used in packaging, household appliances, electronic communications, transportation, printing, chemicals, building materials, decoration and other industries. According to the aluminum foil uses, aluminum foil can be divided into four main types: packaging foil, air conditioner foil, electronic foil, and battery foil.

Battery aluminum foil generally refers to the aluminum foil of the lithium battery positive electrode collector, which is not only the current collector electrode, but also the carrier of the lithium battery positive electrode material. It is estimated that by 2025, the total global demand for battery aluminum foil will reach 825,000 tons, with a four-year compound annual growth rate of 43%. It is estimated that the global demand in 2023 will be 488,000 tons.

Electrode foil is the main raw material for aluminum electrolytic capacitors. The downstream market of electrolytic capacitors is mainly used in consumer electronics, industry and communications, of which consumer electronics accounted for 45%, followed by industrial fields, including lighting, industrial control, frequency conversion, etc.

Aluminum foil is mainly used in tobacco packaging, food packaging, pharmaceutical packaging, beer label sealing and daily chemical packaging in the packaging field. As food packaging, the main purpose of aluminum foil packaging is heat preservation. At present, the global online transaction and takeaway market is growing rapidly, driving the demand for aluminum foil for food packaging to rise.

The U.S. is a major contributor to the global packaged food market. In most of the packaged food products, plastic laminated aluminum foil is used to extend the shelf life of food products such as buttermilk, whipped cream, ice cream, curd, yoghurt, butter and cheese. At the same time, factors such as global population growth and increasing health awareness are driving the demand for dairy products.

The global new crown pandemic has driven people to improve health and hygiene, and consumers have paid more attention to safe packaging, including pharmaceuticals, which will increase the demand for pharmaceutical packaging aluminum foil. According to Infiniti Research data, the global pharmaceutical aluminum foil packaging market is expected to reach US$3.718 billion by 2025, with a five-year CAGR of approximately 3.87%. 8011 aluminum foil is a popular ally used in these fields. Welcome to leave message below to inquire alloy 8011 specifications.

Original Source: https://www.alumhm.com/a/aluminum-foil-uses.html