Aluminum product for roof

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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:2mm aluminum welding with oxygen welding or argon arc welding good?
In order to improve the welding quality and welding seam strength, 2 mm aluminum should be the first choice of AC TIG welding + aluminum welding wire welding.The second is: oxygen acetylene (or oxygen propane flame gas welding) + + aluminum welding wire welding aluminum solder.
Q:why does the bubble apear a few minutes later after putting aluminum sheet into diluted hydrochloric acid?
Aluminum element is extremely activated and will react with oxygen, generating aluminum oxide, once being exposed in air, so there is a layer of aluminum oxide on the surface of daily aluminum products including aluminum sheet. When aluminum sheet is put into diluted hydrochloric acid, aluminum oxide on the surface will firstly react with hydrochloric acid, generating aluminium chloride and water, the process won’t generate bubble, but after finishing the reaction of aluminum oxide on the surface, when the exposed aluminum element reacts with hydrochloric acid, generating aluminium chloride and oxygen, the bubble appears.
Q:What does 1060h/24 mean in aluminium alloy?
In two the number of Arabia aluminum has no special meaning, is only used to identify the different alloys in the same group, said its second modifications.Four, H24 H said the work hardening of the state, and some do not have H but T said it is heat treatment.24 machining process control hardness and other properties, in addition to 24 and 12, 14, 16, 18, 22, 26, 34, 36 and so on, usually at the end of 4 is a semi hard state.1060O, 1060-H22, 1060-H24, 1060-H18 state is arranged from soft to hard.
Q:As for graphite and aluminum sheet, which one has a better thermal conductivity?
aluminum sheet
Q:6061 what is the density of the aluminum plate?
6061 aluminum plate density:6061 aluminum plate is aluminum alloy, the density is calculated according to 2.9g/cm3.Calculation method:Aluminium plate weight (kg) =0.0000029 * * * * width * lengthAluminium tube weight (kg) =0.0000029 * wall thickness * (outside diameter wall thickness) * lengthFormula for weight calculation of aluminium bars (kg) =0.0000029 * radius * radius * length
Q:When water continually sprays on the aluminum sheet, how to avoid corrosion of aluminum sheet and keep its water resistance?
aluminum will react with oxygen, generating dense Al2O3 oxide film on the surface, once the pure aluminum is exposed in air, it will react with air, generating oxide film to protect it.
Q:which kind of enterprises are aluminium sheet circles used in?
user use cold squezz method to transform the aluminum sheet circle into various standard capacitor shell, aluminium collapsible tube shell, which are broadly used in electron industry, daily chemical industry, medicine, education and automobile products,electrical appliance, heat preservation, machine manufacturing, automobile,spaceflight,military industry,mould, construction, printing and other industries.
Q:Excuse me: how much is the price of the thick 3mm 1000 *2000mm aluminum sheet per square meter?.
(current aluminium ingot price is about: 15000 yuan / ton, plus board processing fee 2000/ tons, =18000 yuan / ton)2.71*3mm* aluminium plate price 18 yuan / kilogram, =146.34 yuan / square.2MM*2.71* price 18 yuan =97.26 yuan / square.Is the aluminum plate with a thickness of more than 0.2mm to 500mm, 200mm width, length less than 16m aluminum material called aluminum plate or aluminum sheet, aluminum is below 0.2mm, 200mm within the width of the row material or bar (of course, with the progress of the large equipment, the width can be 600mm row material also more).
Q:Using thin copper sheets and thin aluminum sheets, respectively, from heat source heat conduction to aluminum heat sink, which kind of efficiency is higher?
Copper is second only to silver as a conductor of heat. The coefficient of thermal conductivity is 398W/mK at room temperature, while aluminum is 236W/mK.The important thing is say three times: please adopt! Please adopt! Please adopt!
Q:Which is better, metal ceiling, galvanized steel sheet and aluminum sheet?
Should aluminum plate, aluminum plate light, corrosion resistance, living room, bedroom or wood profile is better, Ding Mei house ceiling, special guest room, bedroom.

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