Aluminum brazing 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).



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:whst should I notice while welding aluminum sheet and aluminum block?
two types of aluminum reach melting points, aluminum block must be preheated when you weld them with small current, you will know how to do it. You can use argon-arc welding back and forth, preheat it with small current.
Q:when touching a piece of aluminum, does the aluminum gain a positive or negative charge?
Aluminum is a metal and every metal has a property that it holds electrons of its outer most orbital quite loosely ( it is electropositive ). And our hand's skin consists of mostly COVALENT bonded compounds which hold their electrons quite tightly. So if we touch aluminum the chances are strong that the electrons are being transferred from aluminum to our hands. But since our hand have covalent compounds so the total transfer must be very small if it is anyway. Otherwise we feel shock every time we touch a neutral aluminum also IF U develop some negative charge then aluminum will take that charge since it has small hold on the outermost electrons. so it easily takes charge frm yr hand at lower potential to its ground potential surface.
Q:What's the difference between laser cutting aluminum plate and stainless steel plate?
The absorptivity of aluminum plate and stainless steel plate to laser is different. The aluminum plate is more reflective and easier to be removed during cutting
Q:Aluminum...and planes?
The density of aluminum is MUCH lower than cast iron (thus, aluminum is LIGHTER). Because it is lighter, it would be much more ideal for applications like plane building, which is why aluminum is used over cast iron in airplanes. As well, aluminum has a protective coating called aluminum oxide which protects it from corroding in water. [Answer: see above]
Q:What is the amperage setting on a tig welder when welding aluminum?
Best electrodes to use for Aluminum welding is 1.5% lanthanum oxide (gold color code.). 2% zirconia (brown) or 2% thorium oxide (red) can also be used. Note that zirconia-doped electrodes should never be used for DC welding. A lot of welders like to quote offhand the rule 1 amp for every 0.001 inch of thickness. This applies to steel, stainless, and nickel alloys only. Due to the lower melting point, lower specific heat capacity, and higher thermal conductivity of of Al, this rule should NOT be used for Al! I recommend welding a test piece first with the same joint configuration and thickness of the part you intend to weld. Note that fillet welds require more current than butt welds or edge welds. Start out by using 2/3 amp per 0.001 of thickness, in other words, reduce the current of the above rule by about 30-40% . Make 3 test weld, then check to see if there's any visible penetration on the other side. If you don't see any through-pentration at all, increase the current by about 10-20 amps and test again.
Q:What is the difference between aluminum plate AL1050 and AL1060?
1050 and 1060 belong to an aluminum plate, that is, pure aluminum plate, the difference is that the content of aluminum is different. 1050 aluminum content 99.95%, 1060 Aluminum Content 99.60%, material is very close, often can replace the use, the current use is more than 1060 Aluminum plate.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). Aluminum sheet refers to the rectangular plate made of aluminium ingot rolled and divided into pure aluminum plate, alloy aluminum plate, thin aluminum plate, middle thick aluminum plate and pattern aluminum plate.
Q:Aluminum and its compounds?
Al is not reactive because it is so reactive - it gets coated with oxide immediately on exposure, the oxide layer is strong and quite inert except to strong acids.
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:Chevy S10 Aluminum head?
The parts are not straight. Check with an aluminum ruler in all directions.
Q:General characteristics of pure aluminium plate of pure aluminium plate
I really want to know to call 1362889760 for your reference as follows: according to the content of different aluminum alloy elements can be divided into 8 series respectively 1***, 2***, 3***, 4***.5***.6***.7***.8*** according to the different processing technology can be divided into cold and hot rolling. They can be divided into thin plate and medium plate according to their thickness. GB/T3880-2006 standard specifies a thickness of 0.2 millimeters, called aluminum foil. More commonly used grades: pure aluminum plate, 1060 plate. Foil. Thick plate, tensile tube. Extruded tube. Type. Bar. Cold processing bar mainly for corrosion resistance in forming of high places, but not of high strength components, such as chemical equipment, marine equipment, railway tanker, conductive materials, instruments and materials, electrode etc.. 3003: plate, strip. Foil. Thick plate, tensile tube. Extruded tube. Type. Bar. Wire rod。 Cold bar, cold wire, rivet wire, forging, foil, heat sink material mainly used for processing requires good molding property, high corrosion resistance, good weldability or parts, or both have these properties need than the workpiece of 1*** alloy with high strength, such as the transport of fluids tank and tank, pressure tank, storage device, heat exchanger, chemical equipment, aircraft fuel tank, oil pipe, reflective panels, kitchen equipment, cylinder washing machine, rivet, wire. 3003 aluminum alloy sheet, plate, tube drawing. Extruded tubes, houses, partitions, roof covers, piping, etc. 3004 plates, thick plates, tensile tubes.

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