Aluminium foil for someuse

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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.

Aluminium foil has a shiny side and a matte side. The shiny side is produced when the aluminium is rolled during the final pass. It is difficult to produce rollers with a gap fine enough to cope with the foil gauge, therefore, for the final pass, two sheets are rolled at the same time, doubling the thickness of the gauge at entry to the rollers. When the sheets are later separated, the inside surface is dull, and the outside surface is shiny. This difference in the finish has led to the perception that favouring a side has an effect when cooking. While many believe that the different properties keep heat out when wrapped with the shiny finish facing out, and keep heat in with the shiny finish facing inwards, the actual difference is imperceptible without instrumentation.The reflectivity of bright aluminium foil is 88% while dull embossed foil is about 80%.

We provide a full range of precision aluminum strip for almost any application. We produce aluminum strip in a wide variety of alloys, including clad composites. Our aluminum strip can be produced in standard dimensions or custom made to your special requirements. We produce both imperial and metric units. We manufacture in compliance with the main international specifications, and tighter tolerances or custom tempers are available upon request. We offer various surface conditions, custom finishes (painting, anodizing, embossing), special processing, and multiple packaging options to meet our customer's unique requirements. The following is a summary of our capabilities.

Manufactured in compliance with the main international specifications and standards, including:  Aluminum Association, ASTM, EN, and DIN.
We can also manufacture in compliance with other international standards including:ASME, SAE, AMS, AWS, FED, MIL, QQ, ISO, BS, AFNOR, JIS and GOST.

Manufactured in compliance with the main international specifications and standards.
Tighter tolerances are available upon request.


Aluminium (or aluminum; see spelling differences) is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery white, soft, ductile metal. Aluminium is the third most abundant element (after oxygen and silicon), and the most abundant metal in the Earth's crust. It makes up about 8% by weight of the Earth's solid surface. Aluminium metal is so chemically reactive that native specimens are rare and limited to extreme reducing environments. Instead, it is found combined in over 270 different minerals.The chief ore of aluminium is bauxite.

Aluminium is remarkable for the metal's low density and for its ability to resist corrosion due to the phenomenon of passivation. Structural components made from aluminium and its alloys are vital to the aerospace industry and are important in other areas of transportation and structural materials. The most useful compounds of aluminium, at least on a weight basis, are the oxides and sulfates.

Despite its prevalence in the environment, no known form of life uses aluminium salts metabolically. In keeping with its pervasiveness, aluminium is well tolerated by plants and animals. Owing to their prevalence, potential beneficial (or otherwise) biological roles of aluminium compounds are of continuing interest.

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. The citation is from the journal Philosophical Transactions of the Royal Society of London: "Had I been so fortunate as to have obtained more certain evidences on this subject, and to have procured the metallic substances I was in search of, I should have proposed for them the names of silicium, alumium, zirconium, and glucium."

Davy settled on aluminum by the time he published his 1812 book Chemical Philosophy: "This substance appears to contain a peculiar metal, but as yet Aluminum has not been obtained in a perfectly free state, though alloys of it with other metalline substances have been procured sufficiently distinct to indicate the probable nature of alumina."[69] But the same year, an anonymous contributor to the Quarterly Review, a British political-literary journal, in a review of Davy's book, objected to aluminum and proposed the name aluminium, "for so we shall take the liberty of writing the word, in preference to aluminum, which has a less classical sound."

The -ium suffix conformed to the precedent set in other newly discovered elements of the time: potassium, sodium, magnesium, calcium, and strontium (all of which Davy isolated himself). Nevertheless, -um spellings for elements were not unknown at the time, as for example platinum, known to Europeans since the 16th century, molybdenum, discovered in 1778, and tantalum, discovered in 1802. The -um suffix is consistent with the universal spelling alumina for the oxide (as opposed to aluminia), as lanthana is the oxide of lanthanum, and magnesia, ceria, and thoria are the oxides of magnesium, cerium, and thorium respectively.

The aluminum spelling is used in the Webster's Dictionary of 1828. In his advertising handbill for his new electrolytic method of producing the metal in 1892, Charles Martin Hall used the -um spelling, despite his constant use of the -ium spelling in all the patents[58] he filed between 1886 and 1903. It has consequently been suggested[by whom?] that the spelling reflects an easier-to-pronounce word with one fewer syllable, or that the spelling on the flyer was a mistake.[citation needed] Hall's domination of production of the metal ensured that aluminum became the standard English spelling in North America

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Q:What's the difference between PET gold card paper and aluminum foil gold card paper film?
Aluminum foil gold card paper is used in base materail(paperboard) 1:It is easy to compare the appearance when you know the making process. Aluminum foil is made by pressing vaporized aluminum into slice and then print or thermoprint. Stick to PET thin film and shake it under ray of light. You will find that it is highly reflective. 2: Burning test: PET belongs to transparent plastic. PET gold card paper and aluminum foil have different appearence and making process. 3.PET gold card paper is printed on base materail(paperboard) previously,however, some printing layer don't have good reflective performance. PET thin film is very bright. When aluminum foil gold card paper burn to a cinder, the remained metal aluminum foil is thermoprinted. PET gold card paper can be burned into cinder totally. Aluminum foil is with metallic lustre.
Q:Is aluminum foil a kind of alloy or something else?
Aluminum foil is pure aluminum, (except for the fake) which is a kind of thermoprinting material made by calendaring aluminum into sheet. Since its thermoprinting effect is similar to that of silver foil, it is also called fake silver foil. As aluminum is soft and ductile with silvery luster, aluminum foil sheet can be made by mounting calendered aluminum sheet on the offset paper with sodium silicate, which can be used to print. But the color of aluminum foil will gradually become dark as it is easy to be oxidized and it fade due to friction and touching, so it is not applicable to the thermoprint of book covers for permanent preservation.
Q:Aluminum foil and fold thickness difference is caused by what?
A roll of aluminum foil rolling up to tens of meters, rolling up to about 10h, with time, the difference between thick, very easy to form, and the means for adjusting the thickness of only tension speed. These factors have caused difficulties controlling the thickness of aluminum foil rolling, so the real difference in thickness control less than 3%, a number of conditions need to ensure, rather difficult.
Q:What's the highest temperature resistance of the aluminum foil ?
Yes.
Q:Where are the metal foil papers sold? Is there a hardware store?
What's the thickness? There is a kind of aluminium foil, which is sold in the chemical shop.
Q:Without the backing of aluminum foil and aluminum foil backing is what is the difference between what is their characteristics?
No backing: is the ordinary aluminum foil, a tin foil, such as high-grade aluminum bottle mouth. The surface has very tiny holes, easy to leak smell, but can be arbitrary shape covered in the surface of the object, very soft.A backing: in ordinary aluminum foil back up a layer of membrane material, such as paper. In order to increase the intensity, reduce the leakage of aluminum foil surface caused by tiny holes. The most common is the layer inside the cigarette case. Good sealing performance, especially for odor sealing.My factory main operation is aluminum foil roughing mill in 20 years ago, a machine about one million, more than 170 kW, zhenshuang!!!
Q:The Egg Tart foil can put the microwave it
May not。 The microwave emitted by the microwave oven meets metal, and the foil is made of aluminium and can not be used in a microwave oven.
Q:The network structure of aluminum foil and separate line together with differences
This structure can prevent the wire broken insulation, and can be fixed easily through the internal structure, test.
Q:Is tin foil paper the same as aluminum foil?
The difference between aluminum foil and tin foil, which are mainly used to wrap cigarette, is their thickness and control of high temperature resistance! “Tin foil” and “aluminum foil” are produced respectively by metal tin and aluminum through calendaring. Aluminum foil paper mainly use offset printing, for example, the disposable meal box on the plane which is made from aluminum foil and can be heated in micro-oven, some fried food and aluminum foil for hairdressing like the so called tin foil perm. Besides, aluminum foil is applicable to many fields like packaging, printing, medicine, electronic, food, and building.
Q:Is the soundproof cotton with aluminium foil good or without aluminium foil?
The foil is insulated, without it.Under the shield of common pure city road to go, are always suet asphalt road, unless the engine can hit the underpinning, sinking impact is not bad that a thin iron plate.

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