China Aluminum Punched Metal Sheets with a Wide Range of Properties
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 5000 m.t./month
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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.
- Q:How does the surface treatment affect the corrosion resistance of aluminum sheet?
- The surface treatment of aluminum sheet plays a significant role in enhancing its corrosion resistance. Aluminum is inherently corrosion-resistant due to the formation of a thin oxide layer on its surface. However, this oxide layer is not always sufficient to protect the metal from aggressive environments or harsh conditions. Surface treatments such as anodizing, chromating, or painting can provide an additional protective layer on the aluminum sheet, significantly improving its corrosion resistance. Anodizing involves creating a controlled oxide layer on the surface of the aluminum through an electrochemical process. This layer is highly resistant to corrosion, offering excellent protection against various corrosive agents. Chromating, on the other hand, involves the application of a chromate conversion coating, which forms a thin film on the aluminum surface. This coating acts as a barrier, preventing corrosive substances from reaching the metal and causing oxidation. It also enhances the adhesion of subsequent paint or adhesive layers. Painting is another commonly used surface treatment for aluminum sheets. The application of a paint layer not only protects the metal from corrosion but also provides an aesthetic finish. The paint acts as a physical barrier that shields the aluminum from moisture, chemicals, and other corrosive elements. The choice of surface treatment depends on the specific application and the level of corrosion resistance required. Anodizing is often preferred for aluminum sheets used in construction, automotive, and aerospace industries, as it provides excellent corrosion protection and improves the appearance of the metal. Chromating is commonly used in electrical and electronic applications, as it offers both corrosion resistance and electrical conductivity. Painting is suitable for applications where aesthetics and corrosion protection are equally important, such as architectural elements or consumer products. In conclusion, the surface treatment of aluminum sheet significantly affects its corrosion resistance. Anodizing, chromating, and painting all contribute to enhancing the protective properties of aluminum against corrosion, thereby extending its lifespan and ensuring its durability in various environments.
- Q:Can the aluminum sheets be used for manufacturing food packaging?
- Indeed, the utilization of aluminum sheets in the manufacturing of food packaging is feasible. Owing to its diverse characteristics, aluminum has become a favored option for food packaging. Its lightweight nature, resistance to corrosion, and exceptional heat conductivity are among the reasons for this preference. These attributes render it suitable for safeguarding the freshness and quality of food items. Moreover, aluminum possesses impermeability to light, moisture, and oxygen, thereby aiding in the extension of the shelf life of food products. Furthermore, the malleability of aluminum sheets enables them to be effortlessly molded into various shapes and sizes, thus facilitating tailored packaging solutions. In essence, the food packaging industry frequently relies on aluminum sheets due to their adaptability, durability, and their ability to ensure the safety and integrity of food items.
- Q:Are 101 aluminum sheets suitable for agricultural machinery?
- Yes, 101 aluminum sheets are suitable for agricultural machinery. Aluminum is a versatile and lightweight material that offers several benefits for agricultural machinery. It has excellent corrosion resistance, which is crucial for equipment exposed to various weather conditions and chemicals commonly found in the agricultural industry. The strength-to-weight ratio of aluminum is also advantageous, allowing for increased payload capacity and fuel efficiency. Additionally, aluminum is easily formable, enabling manufacturers to create complex shapes and designs for machinery components. Overall, 101 aluminum sheets provide the durability, corrosion resistance, and versatility required for agricultural machinery.
- Q:I want to make a dress from aluminum cans. However, aluminum is very sharp once cut. So, do you thing there is a possible way to make the cut edges less sharp? Would sanding the edges help?
- It's a soft metal so sanding and filing would work. You could also consider folding over the sharp edges (like a hemline) using a pliers or similar tool
- Q:bending, bending phenomenon will occur, I would like to annealing treatment. Does the master know the annealing temperature and time?
- And the same direction in the rolling, more than 1.5 of the thickness of cracking is more serious; it is proposed to increase the bending angle of R, annealing may not be solved.Or on the bending line and calendering line to cross 45 degrees (comparison fee)
- Q:I have a lot of old aluminum cake pans, coffee pots, pots and pans and various old nuts and bolts made of aluminum. Would it be worth it to scrap them? They really aren't usable for cooking anymore. They are clean.
- if u live in wollongong australia there currently a dollar a kilo and my dad does it and puts the money towards down the coast...recycle copper its expensive over here
- Q:do recycling centers take already compacted aluminum cans? Link is below. if not then why are so many people making homemade can crushers?
- Yes they do. At one point there was a contest to make your own can crusher and post the video for the life of me I cannot remember what it was for anymore.
- Q:Can aluminum sheets be used for heat exchanger fins?
- Yes, aluminum sheets can be used for heat exchanger fins. Aluminum is a popular choice for heat exchanger fins due to its excellent thermal conductivity, lightweight nature, and corrosion resistance. Aluminum fins allow for efficient heat transfer between the fluid and the surrounding environment. Additionally, aluminum sheets are easily formed into various fin shapes and sizes, providing flexibility in design. Overall, aluminum sheets are a suitable and commonly used material for heat exchanger fins.
- Q:What is the fatigue strength of aluminum sheets?
- The fatigue strength of aluminum sheets can vary based on several factors, including the composition of the alloy, thickness, condition of the surface, and the specific loading conditions. When compared to other metals, aluminum alloys typically exhibit favorable fatigue strength. To determine the fatigue strength of aluminum sheets, fatigue testing is commonly employed. This involves subjecting specimens to cyclic loading until failure. The fatigue behavior of aluminum sheets is characterized by the S-N curve, which represents the relationship between the applied stress amplitude (S) and the number of cycles to failure (N). Aluminum alloys, such as 2024-T3 and 6061-T6, are frequently used in industries like aerospace and automotive due to their high fatigue strengths. These alloys can endure millions of cycles at specific stress levels. For instance, at 10^6 cycles, 2024-T3 aluminum alloy has a fatigue strength of approximately 105 MPa (15,000 psi), while 6061-T6 aluminum alloy has a fatigue strength of around 96 MPa (14,000 psi). It is worth noting that the fatigue strength of aluminum sheets can be influenced by various factors, including surface defects, corrosion, temperature, and loading frequency. To enhance the fatigue strength, it is important to properly prepare the surface by smoothing it and eliminating sharp edges. Additionally, the use of appropriate stress relief treatments and design considerations, such as avoiding stress concentrations and optimizing joint design, can also improve the fatigue performance of aluminum sheets. In conclusion, the fatigue strength of aluminum sheets is generally considered good. However, it is crucial to consider the specific alloy, thickness, surface condition, and loading conditions in order to accurately determine and optimize the fatigue performance in practical applications.
- Q:Can 101 aluminum sheets be customized in terms of size and thickness?
- Yes, 101 aluminum sheets can be customized in terms of size and thickness according to specific requirements and needs.
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China Aluminum Punched Metal Sheets with a Wide Range of Properties
- Loading Port:
- Shanghai
- Payment Terms:
- TT or LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 5000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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