6061 Aluminum Plate Tolerances

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FAQ

is aluminum foil spacer poisonous after heating?

It’s a kind of thermoprint material made by pressing the aluminum into sheet, and owing to its similar thermoprint effect to silver foil, so it’s called fake silver foil. Aluminum has soft texture, good ductility, and is silver white, if we use sodium silicate to paste the sheet after pressing on the offset paper, making aluminum foil, the foil can be printed. But aluminum foil is easy to be oxidized and darkens, rubbing and touching will make it darken, so it doesn’t suit for the thermoprint of books’ cover that needs to be preserved for a long time.

Yes, aluminum sheets are generally resistant to vibration due to their inherent strength and durability. The high stiffness-to-weight ratio of aluminum, along with its ability to dampen vibrations, makes it an ideal material for applications requiring vibration resistance.

The typical thickness tolerance for aluminum sheets can vary depending on the specific grade and manufacturing process, but it is generally around ±0.005 to ±0.01 inches.

Yes, aluminum sheets can be used for air ducts. Aluminum is a commonly used material for air ducts due to its lightweight, durable, and corrosion-resistant properties. It is also easy to work with and can be easily shaped and formed to fit various duct designs.

I have a problem when machining aluminium in my machine shop. There are times when the machines aluminium surface turns yellowish (somtimes brown). I do not know what is the main cause of the problem. Is it due to the coolant used?

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.

Yes, aluminum sheets are suitable for manufacturing heat exchanger tubes. Aluminum has excellent thermal conductivity, corrosion resistance, and is lightweight, making it an ideal material for heat transfer applications.

Aluminum sheets are indeed suitable for electrical conductors. They are frequently employed as conductors in a variety of electrical applications due to their remarkable conductivity, lightweight nature, and relatively low cost in comparison to metals such as copper. With approximately 61% of copper's conductivity, aluminum serves as an efficient conductor for most electrical purposes. Power transmission lines, electrical wiring, bus bars, and numerous other electrical components commonly utilize aluminum sheets. However, it is crucial to acknowledge that aluminum possesses higher resistance than copper, necessitating larger cross-sections to carry the same current. Additionally, caution must be exercised to prevent overheating when employing aluminum sheets as electrical conductors, as they have a lower melting point than copper.

Aluminum sheets possess the advantageous characteristic of being effortlessly malleable, allowing them to be shaped or bent into desired configurations. This high malleability of aluminum ensures that it can be easily manipulated without any risk of fracturing or breaking. Moreover, its low density and impressive strength-to-weight ratio deem it an optimal selection for numerous applications that necessitate shaping or bending. Various techniques, including press-braking, roll-forming, or utilization of specialized tools like a sheet metal brake, can be employed to shape or bend aluminum sheets. The simplicity associated with shaping or bending aluminum sheets has propelled its widespread adoption in industries such as automotive, aerospace, construction, and manufacturing, where customized forms and designs are frequently required.