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:Can aluminum foil be used in the microwave?
Microwave oven microwave frequency radio waves generated belong, usually around 2500MHz. The microwave band has the following characteristics: 1) food and water can be absorbed, the molecule strenuous exercise, heat is generated. 2) can not be absorbed by plastics, ceramics and glass. 3) be under the influence of a conductive metal in a microwave field.
Q:What refers to the mechanical properties of aluminum foil?
The factors affecting the mechanical properties of the aluminum foil more processes are chemical composition and processing of the foil. On the strength and ductility for the aluminum foil by adjusting the chemical composition or change the machining process and parameters, or the strength of the plastic material in a certain range while maintaining a constant so that the other party has changed. That is, the value can be changed with the strength and ductility of aluminum foil limited by adjusting the chemical composition and processing technology.
Q:What is the difference between the tin foil and aluminum foil?
Metal tin foil rolling production, aluminum foil is rolled production. Aluminum foil can not be rolled out in the past so thin, and when aluminum prices are not cheap, long-term champion in foil and now the rise of the aluminum foil, foil relatively cheap price, most of the aluminum foil packaging has been generally used in food packaging composite film is a combination of a printed layer, a barrier layer of aluminum, heat-sealing layer up.
Q:Find a weld and riveting machine to connect the two roll of aluminum together. the width of aluminum is 40-60cm,because the surface of aluminum has a layer of oxidation film,so...
I am a high voltage professional welder. I can't endure the current surge,even the spot welding. the surface oxidation film can be baked by the cutting knife,or polish by the abrader. no matter how big the welding rod is useless.The aluminum is too thin.
Q:What causes the velocity effect of the aluminum foil?
1, the state of friction between the work rolls and the rolled material changes, with the increase of the rolling speed, into the amount of lubricating oil increases, so that the lubrication between the rolls and the rolled material changes. Reduced coefficient of friction, film thickening, followed by thinning the thickness of aluminum foil.
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:The thickness of aluminum foil.
The purity of aluminum foil and the pure aluminum are higher than the lithium battery. the material of thickness of 0.1mm is called foil,and now the thickness of aluminum foil is 0.01mm.
Q:What are the advantages of decorative aluminum foil?
Decorative foil insulation, sound insulation, fire protection and easy to clean, etc., but the appearance of luxury, easy processing, construction and installation speed. At present China's construction, home improvement industry has formed a decorative foil application boom.
Q:Does the tin foil paper or aluminum foil paper can protect people from radiation?
tin foil paper has a good gloss finish and heat reflection.because of the protection of tinm foil paper,the cigerate doesn't change with the atimulation of outside world.more importantly, it will not change the smoke influenced by air and humid environment and the tobacco will not be deterioration since the expiration date has been longer.in addition, considering the heat insulation and beautiful design, there is platinum paper in the cigerate box.we may also use tin foil paper when having a barbeque.the paper is wrapped outside,making the food cooking well qiuckly with nice smell and no cold.the grilled lamb in the resturant also wrapped tin foil paper. tin foil paper can conduct the eletricity. it also has the function of heat insulation.in summer, the tin foil paper covers house roof ,which will reflect the 60% sunlight.besides, the space between the tin foil and the roof should have 150~200mm circulated air stratum.
Q:What is foil bags vacuum cooking?
Retort pouch is a composite plastic film bag can be heat-treated, it has two plastic containers and cans of boiling water resistant advantages. Food can be left intact in the bag, high temperature (usually in the 120 ~ 135 ℃) heating sterilization, remove and serve. After ten years of using proven, it is an ideal packaging container sales.

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