Aluminum Definition and 282 Threads

what size aluminum channel would I need to be as strong as a wood 2x8

I have stored here electronic devices with aluminum electrolytic capacitors used and manufactured in the early 90s. Here the temperature varies between 33-35C. These electronic devices need to be energized what time and frequency to prevent failures in these aluminum electrolytic capacitors...

Hey everyone, I had an idea for making an aluminum air battery that mitigates some of the problems. The draft is quite rough but I just made it now and I can improve it as I go along. So basically the idea is the aluminum will cut up into large grains/pellets in a fuel tank. The pellets will...

Am I obsoleted? I try to buy non stick baking sheet. I get used to looking for Teflon coated ones. Now when I look, most are just say Aluminum non stick pans. Did I missed the moon since I shopped for non stick stuffs years ago? are the new aluminum ones just as good? Thanks for putting up my...

Hello everyone, I am working on my final project for mechanical engineering, which is to design a wheelchair for a dog with paralyzed back legs. I am looking for some innovative concepts to incorporate into the design and would be happy for your help. I've thought of a few ideas and so far I'm...

I have a friend who was in a car accident causing full and permanent blindness. I've been looking to help him solve some of the issues he is running into. One of them is that he is tall, about 6'2" and the optimal length of a White Cane for moving quickly is 4 inches shorter than your height...

I am trying to decide on the material and dimensions for the rail. The rails are supported on either side of a 10ft span. -- What dimension steel angle can carry a 200lb load across a 10ft span? a=? b=? c=? -- What dimension aluminum angle can carry a 200lb load across a 10ft span? a=? b=? c=?

Could people make a large sheet of aluminum foil and send it to the Earth's orbit to cover let's say half of the Sun and thus ease down these hot climate-change-induced summers? How feasible would something like this be? I know there was some talk years ago that a ring could be made around the...

I work for an aerospace supplier across different departments. I was recently shown how the production workers straighten aluminum parts after a glycol heat solutionizing process. The aluminum parts undergo a heat treatment for a few hours and are quenched in glycol. I can't get too in-depth...

Hello, I am designing a centrifugal heat pump, which compresses air. I'm considering making the impeller from aluminum, probably from 7075, since the stresses rise to about 385 MPa when rotating at high speeds. The input temperature of the air is 85 degrees Celcius and output 125 degrees...

Hi guys, I am struggling to find the answer on Google and at forums. I am experimenting with two sheets of aluminum foil that are separated by a thin plastic foil. In theorie they should be attracted to each other if I connect one foil to power and other to ground of a DC voltage source. I am...

Will Na2SO4 (Sodium sulfate), when used as an Electrolyte in Water, EAT away at submerged Aluminum components, when performing Electrolysis ?

Basically it's a well known reaction, many kids on youtube make it for the views: I am thinking, since AlI3 sublimes can it be put in say tungsten bottle (is this even a thing??) and then used as a rocket the same way Na+H2O or HCL+Al rockets are used - the gas escapes? This phase...

Whats its thermal conductivity compared to copper? (as in x times worse than copper) also, How electrically insulate is it? I'm looking to see if i can use it to encase an entire motherboard in a giant heat sink for a future project where i want to try and cool the entire motherboard to subzero...

I recently realized a quite long (4.5 m) tube for ultra high vacuum in alluminium. Unfortunately in the realization a terrible error has been made... The internal surface has been anodized! I know that such treatment horribly enhance the outgassing rate... I read over the net that in principle...

Hello, human people's. I noticed a strange phenomenon while playing electrochemistry. - i used 2 strips of aluminum foil as electrodes in sodium sulfate solution, 1 for positive terminal and other for negative. Applied 5 volts, essentially zero current flew. - i used 1 strip aluminum for...

Note: for some reason frequency on this lecture is indicated by \omega. I wanted to calculate the reflectance using one of these equations that were given to us during the lecture: R=1 where \omega < \omega_p...

Please see the image below. I'm trying to convert my IKEA NYFORS floor lamp into a reading light, by covering the top with an Aluminium pie plate. Will this be a fire or electrical hazard? Does anyone foresee any dangers or risks? As I have 3 of these floor lamps in my attic, I don't want to...

(Continuing from the summary...) I want to build this safely, so I am putting this out here for expert advice. My choice for the shape for the aluminum cantilever is angle, T, square tubing or round. The foam is 2” thick, so I’d like to keep the supports at 2” in width and height. I need to...

I am building a plant rack. Because of size restrictions, I must use angle iron and I want to use aluminum angle because of weight. I am looking at aluminum angle (L shaped) for the shelf brackets. The aluminum angle is 1" and 1/16th thickness, 24" long and screwed into wood. Each angle will...

A self test question from Chemical Principles(Atkins/Jones). Other than rote memorization I don’t see how to do this. The review section references the Periodic Table and, for elements on the right side of the table, one can use 18 minus the group number which would give Al(superscript 5+) since...

Hi! Is anyone familiar with trivalent conversion coating on aluminum? I'm struggling with unrepeatable and too high values of contact electrical resistance of coating. I would really appreciate any advice how to deal with that coating. Thanks a lot!

I'm curious what weak acids will form soluble salts with aluminum, but not silver. From a solubility chart (https://www.flinnsci.com/globalassets/flinn-scientific/all-product-images-rgb-jpegs/ap6901etc.jpg?v=cc7f986a028e4adf833ea6341200add2), HCl, HBr, and HI will form soluble aluminum salts...

Im now drawing sheet metal blueprints, which has a feature like attachable of Commonly use of CPU Cooler. The product that i want to attach is Cooler master Hyper T4. is there any information about standard dimension for regular cpu cooler installation ?

A)W goes downward because before AB gets heat up the system was in equilibrium hen after getting heat up the Force that AB produce makes the roller moves to the right and that makes the whole system go down B)I don't know what it means I know that this can mean the forces that the member Ab is...

Hey all, I was recently searching for kinetic friction coefficients, and I noticed that for a reason which is unknown to me, some materials had not been appointed such coefficient. The specific kinetic friction coefficient that I'm looking for is aluminum on greasy/lubricated cast iron. Any type...

Well, then: my first real topic here on PF :angel: We will soon do a half-bridge PWM thing, if everything goes smoothly. Bit of a scary thing, actually. So far it's about gathering reference material and examples. Even the simulations are just in planning phase. But: as it seems the...

This link makes me fondly remember the goofy Star Trek to save the Blue Whales and how Scotty invented something he invented in the future with the help of Spock. Transparent Aluminum https://phys.org/news/2019-11-aluminum-lasers-bendable-glass.html

I would like to know if Stainless steel 304 or aluminum with a stainless steel finish would be more corrosion resistant when outdoor 24/7/365 exposed to the sun, rain, snow, etc. but not salt. Not a coastal climate. Both materials are resistant to corrosion and are sold as fixtures, etc. but I...

Summary: In a heating by induction experiment performed, the idea was to determine the efficiency of heating up a small steel cylinder, an aluminum cylinder and then compare the two efficiencies. The cylinder was surrounded by a metall coil that alternating current was going through...

Hello, I'm looking for structural materials that will act as the frame (skeleton) for the housing surrounding a waste container. The frame will structurally support HDPE panels as walls. This will be above ground for use in Uganda (but we can ship materials), under a raised squat toilet hole...

Hello Everyone, I'm a retired systems engineer from the aerospace industry, while working part of my job was to come up with concepts and then have great mechanical engineers implement them. Now that I'm retired I have to do both parts for myself. I'm designing a storage hoist to get heavy...

This is what happen to an aluminum block when a 0.5 ounce piece of plastic hits it at a speed 15,000mph in space. That's some serious impact! Just imagine what a heavier object could do traveling at the same speed.

If a copper water pipe is connected to a piece of aluminum through a copper wire, where will the galvanic corrosion take place? On the wire to aluminum joint eating away at the aluminum, or will the whole water pipe suffer? (does copper corrode aluminum, or vice versa, or each other?) thanks

https://www.engadget.com/2019/05/01/nasa-aluminum-fraud-scheme-probe/ Only fined for $46 Million?

Homework Statement Aluminum metal dissolves in hydrochloric acid. What volume, in mL, of 1.58 M HCl is needed to completely dissolve 3.200 g of aluminum?(Hint: write the single-replacement reaction first) Homework Equations V[1]M[1]=V[2]M[2] The Attempt at a Solution I got the...

Homework Statement The bottom of a circular, aluminum pot has a radius of 8cm and a thickness of 1cm. The temperature of the stove top is 120 degrees celsius and the temperature of the pot initially is 20 degrees celsius. What is the rate at which energy is transferred through the bottom of the...

Original thread: https://www.physicsforums.com/threads/remove-an-aluminum-tube.952459/ NaHCO3, i.e. sodium hydrogen carbonate, compared to neutrality, is a weakly alkalinic salt, which, although it can, in the presence of a stronger base, such as sodium hydroxide, act as an acid, by surrendering...

Any ideas on how I would remove an Aluminum drop tube from a gasoline or diesel tank? The tube goes thru a 4" steel pipe that extends 3' to 4' above the tank. The problem is that after years of being in the tank the aluminum has seized to the steel pipe. I am thinking about trying to melt the...

Hello smart physicists! I'm hoping to run a span of 124" for a pull up bar, with a support in the middle at the 62" point (so 3 supports total). I'm using the Rogue P-5V Pull-Up Bar Brackets (https://www.roguefitness.com/rogue-p-5v-garage-pullup-system). The brackets call for a tube with a...

Hi! So when this system gets heated, how does the wire expand if it is bent like that? Would it expand horizontally or vertically? Also, when calculating the stress for the wire, I know that I use the thermal expansion equation for dL of steel, but other people said that you have to also...

Lenz's law shows that dropping a magnet through an aluminum pole will cause an induced current that slows down its fall drastically. I found a website that talks about this a little: https://www.lhup.edu/~dsimanek/TTT-slowfall/slowfall.htm It has the following question: I don't see any...

So as a quick background I've made a 3-d printer (I know a monkey could assemble one of those DIY prusas) and want to step up my game a little bit. I came to the realization that some people have made/sold DIY milling kits, but most of them are for plastics or wood. I would like to make a...

Hi, I'm performing tension tests using a dog-bone specimen conforming to ASTM E8 on 6061-T6 extruded aluminum alloy. ASTM E8 says the surface preparation should be as the product specified. The material I ordered is low grade bar stock 2" wide by 0.25" thick. If I am going to reduce the...

I am wanting to use some Werner Aluminum ladders as a surface to skid a refrigerator-sized object that weighs around 1500 lbs. across a lawn. The plan is to lay some 3/4 ply down on the ground creating a surface, then lay two ladder sections side by side & equal distance apart as "tracks" where...

Homework Statement Two 3.0-cm-diameter aluminum electrodes are spaced 0.50 mm apart. The electrodes are connected to a 200 V battery. Find the capacitance of one of the spheres. Homework Equations [/B] C=QV C=ε0A/d The Attempt at a Solution [/B] I'm really not sure how to approach this...

Does anyone know of an etching solution suitable for aluminium and its alloys that does not contain hydrofluoric acid?

Aluminum metal covers itself immediately of an oxide layer in air. This layer is quite thick, more than 0,01mm they say and it's non-conductive. This layer infact is, e.g., thick enough to prevent soldering, further chemical attack by air oxygen or water (with which nude Al would immediately...

Homework Statement There is 100g of water inside of a 50g aluminum calorimeter. After a reaction takes place the temperature of the calorimeter goes from 20 degrees celsius to 25 degrees celsius Find the energy released by this exothermic reaction specific heat capacity of water is 4.18 and...

For my physics class we have to show an example of bad physics in a movie. I am doing Mad Max 2: The road Warrior and the scene where the gyro captain crashes his ultralight helicopter but the helicopter is completely undamaged as he drives it later in the movie. I need to know what the force to...