prepainted aluminum sheet for

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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).


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Q:Fallout 3 or Apple Aluminum Keyboard?
Keyboard would be more useful and practical. Game would be more fun.
Q:What's the difference between 6061 aluminum plate, 7075 aluminium plate and 6063 aluminum plate?
7075 T6 hardness in 150HB, hardness is highestUsually 6061 and 6063 can be common
Q:What is the best thing to use on aluminum to end existing rust and stop it from spreading?
Uh......... aluminum doesn't rust. Has to be some iron in there somewhere.
Q:cinergy field seats: metal? aluminum?
Yes, they were. Aluminum IS a metal. Aluminium is a soft, durable, lightweight, ductile and malleable metal with appearance ranging from silvery to dull gray
Q:Painting on aluminium .?
Any aluminium will do. Sandpaper it 3 times with decreasingly coarse grain papers, clean it thoroughly with turpentine and then apply 3 coats of white oil based paint. Gesso would do too, but you'd have to use more layers
Q:How to press multilayer aluminum sheets (aluminum sheet's thickness: 0.2mm) together and keep them inseperate after pressing?
resistance welding usually overlays two pieces together and presses them, heating them to melting state through current, you can try multiple sheets.
Q:what's the oxidation method of positive pole on the surface of aluminum sheet?
Do chemical polishing again, oxidation time is about 40 – 90 minutes, after finishing all of these, you can conduct positive pole oxidation, choose sulfuric acid solution in normal situation, pretreatment is very important in the whole process, take stereo as negative pole, firstly, use the solution mixed of carbonate-bicarbonate and detergent to heat and clean its surface, pretreat the aluminum sheet, dyeing according to requirement after oxidation, then remove the oxide film with oxide film removal solution, place aluminum sheet on the positive pole, finally closing it in the boiling water for about 15 minutes.
Q:why does the hardness of 2024 aluminum sheet not increase but decrease after thermal treatment?
The hardness of 2024 aluminum sheet will decrease after thermal treatment(solution treatment), and it will increase after aging treatment.
Q:What is the causes of aluminium discolouration?
Aluminum oxides may appear in different colors depending on hydration states and other variables. Look in a CRC Handbook of Chemistry Physics if available for aluminum compounds and their colors. The colors that you see may also have as much to do with the surface finish as the color of the material on the surface. A microscopically rough surface will appear dark next to a polished surface due to light scattering. I will agree with Ling in principle, but not on details. EDS detection limits on homogeneous samples can be better than 0.1%, although not so good for elements at the light end of the detection range. Current detectors can detect chlorine (a common culprit for aluminum discoloration) at about 0.1%. Your problem with detection and one that Ling has addressed previously may be that a thin film of contamination would not be easily detected by EDS. As Ling suggests, SIMS is a good technique for detecting thin films and low concentrations. The problem with SIMS in this case may be that the detection limits are too good and the technique cannot be quantified. SIMS would detect 2 ppm of chloride and you couldn't tell for sure whether it was 2 ppm, which is probably not an issue here, or 2000 ppm, which would be significant. I would suggest x-ray photoelectron spectroscopy (ESCA or XPS) as an alternative for further study. The technique will analyze thin films (20 A) and detection limits are good enough (about 0.1%). In addition, XPS will give you information about the compounds present, e.g. whether the oxygen is aluminum oxide, aluminum hydroxide, etc. Good Luck.
Q:What are the aluminum plates?
A series of 1000, representing the 1050106010701000 series aluminum is called pure aluminum, all in series 1000 series aluminum content belongs to one of the largest series. The purity can reach more than 99%. Because the technology does not contain other elements, the production process is relatively simple, the price is relatively cheap, is most commonly used in the conventional industry a a series of circulation on the market for most of the 1050 and 1060 series.1000 series aluminum plate to determine the minimum aluminum content in this series according to the amount of the last two Arabia figures, such as the 1050 series of the last two Arabia number 50, according to the international brand naming principles, content must reach to the top 99.5% qualified products. Aluminum Alloy technical standards China (gB/T3880-2006) is also clear that the aluminum content of 1050 aluminum content reached 99.5%. the same 1060 series aluminum must reach above 99.6%.The two and 2000 series aluminum 2A16 (LY16) 2A06 (LY6) features of 2000 series aluminum is high hardness, which belongs to the copper content is the highest, probably around 3-5%.2000 series aluminum plate belongs to aviation aluminum, currently in the conventional industries should not be used. Our current production of 2000 series aluminum manufacturers quality can not less. Compared with foreign countries. Currently imported aluminum is mainly provided by the production enterprises of South Korea and Germany. With the rapid development of China's aerospace industry, aluminum production technology of the 2000 series will be further improved.

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