Pre-painted alu foil for diferent colors

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Aluminium alloys with a wide range of properties are used in engineering structures. Alloy systems are classified by a number system (ANSI) or by names indicating their main alloying constituents (DIN and ISO).

The strength and durability of aluminium alloys vary widely, not only as a result of the components of the specific alloy, but also as a result of heat treatments and manufacturing processes. A lack of knowledge of these aspects has from time to time led to improperly designed structures and gained aluminium a bad reputation.

One important structural limitation of aluminium alloys is their fatigue strength. Unlike steels, aluminium alloys have no well-defined fatigue limit, meaning that fatigue failure eventually occurs, under even very small cyclic loadings. This implies that engineers must assess these loads and design for a fixed life rather than an infinite life.

Another important property of aluminium alloys is their sensitivity to heat. Workshop procedures involving heating are complicated by the fact that aluminium, unlike steel, melts without first glowing red. Forming operations where a blow torch is used therefore require some expertise, since no visual signs reveal how close the material is to melting. Aluminium alloys, like all structural alloys, also are subject to internal stresses following heating operations such as welding and casting. The problem with aluminium alloys in this regard is their low melting point, which make them more susceptible to distortions from thermally induced stress relief. Controlled stress relief can be done during manufacturing by heat-treating the parts in an oven, followed by gradual cooling—in effect annealing the stresses.

The low melting point of aluminium alloys has not precluded their use in rocketry; even for use in constructing combustion chambers where gases can reach 3500 K. The Agena upper stage engine used a regeneratively cooled aluminium design for some parts of the nozzle, including the thermally critical throat region.

Another alloy of some value is aluminium bronze (Cu-Al alloy).

Aluminium foil acts as a total barrier to light and oxygen (which cause fats to oxidise or become rancid), odours and flavours, moistness, and germs, it is used broadly in food and pharmaceutical packaging. The purpose of aluminium is to make long-life packs (aseptic processing|aseptic packaging) for drinks and dairy goods, which allows storing without refrigeration. Aluminium foil containers and trays are used to bake pies and to pack takeaway meals, ready snacks and long life pet foods.

Aluminium foil is widely sold into the consumer market, often in rolls of 500 mm (20 in) width and several metres in length.It is used for wrapping food in order to preserve it, for example, when storing leftover food in a refrigerator (where it serves the additional purpose of preventing odour exchange), when taking sandwiches on a journey, or when selling some kinds of take-away or fast food. Tex-Mex restaurants in the United States, for example, typically provide take-away burritos wrapped in aluminium foil.

Aluminium foils thicker than 25 μm (1 mil) are impermeable to oxygen and water. Foils thinner than this become slightly permeable due to minute pinholes caused by the production process.

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Q:Will aluminum bike frame rust?
Aluminum frames do NOT rust the corrode and unless you live close to the ocean you have little to worry about with the frame. it will be the other components on the bike like the wheels and spokes that may rust if the bike is left outside. If you didnt pay much for the bike then plan on some rust if you leave it out!
Q:Help!!!!!! Questions about Aluminium?
1) From What does aluminium derive its name? Ancient Greeks and Romans used aluminium salts as dyeing mordants and as astringents for dressing wounds; alum is still used as a styptic. In 1761 Guyton de Morveau suggested calling the base alum alumine. In 1808, Humphry Davy identified the existence of a metal base of alum, which he at first termed alumium and later aluminum . The earliest citation given in the Oxford English Dictionary for any word used as a name for this element is alumium, which British chemist and inventor Humphry Davy employed in 1808 for the metal he was trying to isolate electrolytically from the mineral alumina. 2)From which ore is aluminium extracted? Bauxite 3)Which country produces more aluminium than any other? China 4)An American and French scientist both patented the current process used to produce aluminium, what were there names? Hall and Héroult 5)Who is credited with having been first to produce metallic aluminium? Friedrich Wöhler
Q:What does 1060 of the 1060 Aluminum rolls stand for?
Purity can reach more than 99%. Because it does not contain other technical elements, the production process is relatively simple, and the price is relatively cheap. It is the most commonly used series in the conventional industries.
Q:What are cold rolling aluminum coil and hot rolling aluminum coil? What are their features?
If the rolling temperature is above the crystallization one, it is hot rolling, otherwise it is cold rolling.
Q:modeling aluminum?
Do not try this at home! Seriously, this is exactly the kind of process that is used for casting metals. However, you need to have very strong molds with no cracks in them. Also, aluminum presents special problems. Solid aluminum does not corrode the way iron does, because it very quickly forms a protective tough layer of aluminum oxide. But molten aluminum can catch fire, with devastating consequences.
Q:Why do the layers loose when taking out coil after roll of aluminum 0.14?
After rolling, the most possible reason may be poor deoiling effect. I think, for 0.14mm aluminum coil, the lining sleeve will not be forgotten. After rolling , oil ooze from aluminum layers, and the support of aluminum coil is not enough, leading to coil collapsing. The specific manifestations are that the edges of even round aluminum layers become like water ripple, and that the aluminum coils suddenly become uneven when taking out coil.
Q:who invented aluminum and or aluminum foil?
placed extremely oil or butter on a paper napkin or paper towel and rub on the pan. do not forget the ends, it truly is the position pies especially stick. No, it truly is not had to oil an aluminum pan, in spite of the undeniable fact that the perimeters do look to adhere.
Q:Is there aluminum coil of 44mm wide and 0.40mm thick?
The common width of aluminum coil is 1000mm or 1220mm. If you want 0.4mm*1000MM aluminum coil, you can strip 0.4mm*1000MM aluminum coil.
Q:Automotive aluminum coil, using GB H22, what brand, what are the main ingredients?
5754-H22 aluminum sheet has the characteristics of medium strength, good corrosion resistance, weldability and easy processing. It is a typical alloy in Al-Mg (mg Al alloy) alloy. In the corresponding foreign brands for AlMg3, 5754 different heat treatment is the automobile manufacturing industry (car door, mould, seals), main materials used for canning industry
Q:Calculate the resistance of aluminium cable of length 1o km and diameter 2mm?
Let ρ be the resistivity of the aluminum cable, A the cross sectional area of the cable and l the cable's length. The resistance R of the aluminum cable is now given by: R = ρ·l / A = 2.7·10^-8·(10·10^3) / (π·r²) = 2.7·10^-8·(10·10^3) / (π·(1·10^-3)²) = 85.9 Ω I guess the tricky part is remembering: R = ρ·l / A but when you realize how intuitive this equation is you don't have to memorize it. The resistance R is proportional to the resistivity ρ, so we must have the following in our equation: R = ρ·k , where k is some value governed by the dimensions of the cable! It is logical that the resistance is also proportional to the wires length l. This is logical when you realize that the longer the wire the more obstacles the electrons will have to pass by! Now we have that: R = ρ·l·c , where c is another value governed now by the cross sectional area (only dimensional property left). If we think of the wire as a highway with cars instead of electrons we realize that there is less resistance (higher speed) when the highway has many lanes and is very broad. From this we realize that the greater the cross sectional area the smaller the resistance. R must therefore be inversely proportional to A. We now have: R = ρ·l / A I hope there are no mistakes here :P

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