Questions tagged [aluminum]

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2
votes
6answers
2k views

Can aluminium foil be a thermal insulator?

I've searched on Google that aluminium foil can be a thermal insulator, but how does it work? From my thought process, it should've been a conductor because its a metal, right? But, some said that ...
11
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9answers
2k views

Aluminum weight saving

"Aluminum saves weight! Its 3 times lighter than steel!" Also its 3 times weaker and 3 times softer. When comparing stiffness and strenght to weight ratio, aluminum isnt any better than ...
0
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1answer
18 views

Computing the required thickness of an aluminum sheet to support a given load

I want to fabricate an aluminum shelf for my media center. 22 1/16” x 37 5/8” with a rectangular cutout 2 1/2” deep on one of the long edges of the sheet with 6” of material on either side of the ...
0
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0answers
22 views

What is the difference between wrought aluminum and cast aluminum? Is it possible to cast 6061 aluminum?

I'm currently learning about material properties and I'm not certain what the main differences are between the different types of aluminum. The aluminum I'm most familiar with is 6061-T6 aluminum and ...
1
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1answer
26 views

Software for designing products made of aluminum extrusions

I'm going to build a storage cabinet out of aluminum extrusions. Something that looks like that, except lighter and less intricate: So yeah, my cabinet will be a lot lighter and without moving parts. ...
0
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2answers
37 views

How to achieve textured matte paint finish on flat aluminium

I have aluminium gates, made of sheets. If I paint it using normal powder coating, it looks shiny and reveals imperfections (e.g. mild bends) depending on the angle at which sun light hits it. I am ...
1
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2answers
42 views

Feasibility of reconstituting existing 5083 Aluminium

Can I melt 5083 aluminium and then reconstitution into a mould. I would like to know if it is possible to melt down existing 5083 aluminium lp and then pour the molten liquid into a yacht mould of 6mm ...
1
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2answers
119 views

How much deflection can/should I accept with Aluminum Extrusions?

I plan building things with aluminum extrusions. On this website I can calculate the deflection depending on the profile length and load. https://8020.net/deflection-calculator I.e. if I select a 20/...
0
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0answers
40 views

Belt Drive Shaft - What Profile is This?

I'm trying to source a similar extruded aluminum round profile, that I can attach a belt to, as in the pic below. The shaft will turn and pull on that belt. I looked at the 80-20 extrusions and ...
1
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2answers
122 views

What would happen if I tempered aluminum of aeronautical use (Al 2024)?

What would happen if I tempered aluminum of aeronautical use? Being more specific, an alloy of 96% of aluminum and 4% of copper, without modifications and 2% of impurities. (Al 2024)
0
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1answer
132 views

How to properly fit almuminum glass window without leakage?

I got a brick-wall house. The wall is 25cm thick. I want to add windows. There are 2 ways of adding a window: Adding the window on the inside side of the wall, so that if the aluminium frame of ...
2
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2answers
1k views

How to straighten an aluminium extrusion?

The extrusion shape is a simple square tube. If I set it down on a perfectly flat surface with its curvature upwards, the middle raises up by around 5mm over the length of 1m. So far I tried to just ...
1
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0answers
46 views

Would 6061 or 5052 Aluminum have lower rate of creep?

I am making a device which uses a bent thin sheet of aluminum as a spring which provides a constant force. It must be made of aluminum. Over time the material will relax and the force of the spring ...
1
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0answers
26 views

How to determine minimum aluminum t-slot profile type for frame?

For a frame with dimensions 1000x1000x400, I am determining which T-slot extrusion type will be strong enough. I am considering both 30-6060 (30 series I-type, metric) and 20-4040 (20 series I-type, ...
0
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0answers
33 views

Maximum strength size thread for aluminium sheet per thickness

Is there a rule of thumb, or a table which helps one determine what is the maximum strength thread size to use for aluminium sheet? I am interested in threading 3mm, and 2mm thick sheet aluminium. I ...
8
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3answers
8k views

What method can I use to make a pivot point in an aluminum linkage?

I recently had a project where I made an aluminum linkage (similar to a scissor lift) operated by linear actuators. Aluminum pieces were fabricated from 6061 "standard" aluminum stock, 6mm (0.25 inch) ...
0
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1answer
60 views

Mounting methods for thin wall cast aluminum

Having a cast aluminium enclosure with the 3mm wall thickness. now I need to mount this to a mounting plate which fixed in vertical walls. can I have some idea on how should I choose the appropriate ...
1
vote
1answer
73 views

What thickness do I need for a 30x30 (cm) aluminium plate to hold 350Kg on three points?

I want to make a strong connected weight-scale Arduino project, for which I already own 3×350Kg sensors (red). I plan to make the plate (green) around 30cm×30cm in 99.5 Brut aluminum, with my three ...
3
votes
3answers
62 views

Shade tree engineer needs help calculating hoop stress

I have an extruded aluminum tube. I'm trying to come up with an Excel calculator that will help me find out how much force would be exerted on the internal walls if the tube was filled with rubber, ...
2
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2answers
245 views

Natural age hardening of aluminium 6082-t6

I've been looking at using Aluminium 6082-T6 structures in impact energy absorption mechanisms. I planned to do some material testing, made specimens for testing then was distracted with another ...
1
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4answers
397 views

deformation / bending problem with anodized aluminium panels

I recently had a machine shop machine some aluminium panels (3mm thickness) which I then sent to an anodizing shop where the panels were bead blasted and anodized. When they came back they were ...
1
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1answer
43 views

Small scale aluminium tubes manufacturing

Our startup needs short aluminuim tubes (max. ~70 cm [~27.5 inches] long / less than 1 cm / 0.4 inch diameter) such as these: We'd prefer to manufacture them ourselves rather than buy them from a s ...
1
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3answers
387 views

How can I calculate "bendability" of aluminium tubes?

Disclaimer: sadly not an engineer (I hope this is the right place for such my question. Please let me know if it isn't). I'm designing a tent. I know most of the dimensions of the first prototype I ...
0
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4answers
61 views

small relatively inexpensive crack detection apparatus for bike shops

Is there a relatively inexpensive (let's say under $500US) crack-detection device and related mobile app that would be easy enough for a non-engineer/non-metallurgist to use to determine whether a ...
2
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2answers
106 views

What is the manufacturing method used to make aluminium C channel

I don't know how this is made and I don't know the name of the method to search for it to learn more.
2
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2answers
116 views

How can I square off a piece of aluminum bar after cutting without a milling machine?

When I cut aluminum bar or t-slot extrusion on my bandsaw I am not happy with how "square" this edge is. I don't have a milling machine at home, and I have been told grinding aluminum is a very bad ...
0
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2answers
189 views

What temperature required to alloy copper and aluminum?

According to this phase diagram, the melting point of 30% copper aluminum bronze is around 548°C. Lets say I create molten aluminum at 680°C, can I add small pellets of copper and swirl them around to ...
1
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4answers
598 views

Aluminum square tubing capacity question

I have an awning that I am attaching to the corner of the house. I needed to extend it so I got a piece of 6063 square aluminum tubing. It's 1 inch wide with .125 wall thickness. It has about 2 feet ...
1
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1answer
66 views

Mounting outdoors camera using aluminum 5052

I designed a simple U shape 2mm sheet metal bent mount for a 4kg outdoors CCTV camera. The mount was accidentally produced from 5052-H32 Aluminum instead of 6061-T6. Is it common to use 5052 ...
1
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0answers
17 views

Should I use ST or LT values for extruded rod?

In MMPDS for AA7075-73511 (extruded rod) the Table 3.7.10.0(g3) show both ST and LT values for transverse directions. For a rod with circular cross section there is really no Short and Long transverse ...
2
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2answers
71 views

Creating strongest possible sectional aluminum round tube

I want to attach a mast and sail to a dinghy. The mast length would be 10.5 feet tall to accommodate a 20-22 sq ft sail, but for transportation purpose would need to be collapsible into at least two ...
1
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1answer
55 views

What is the purpose of the steel plate in this coupler?

I've found a shaft coupler that has a steel plate in between, but it's not clear what its function is: If it is to add strength to the coupler, isn't the coupler as strong as the weakest link, i.e. ...
2
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0answers
85 views

Is having a keyway in aluminium for 30Nm a bad idea?

I'm designing an aluminium shaft hub for a 16mm keyed shaft with a maximum torque of 30Nm. However, stress analysis tells me that the keyway can suffer too much stress: If my understanding is correct,...
-1
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4answers
9k views

Benefits and disadvantages of aluminium alloys as a replacement for structural steels in ships

My Answer. Benefits: The major advantage of aluminum in ship building is its strength to density ratio. Aluminum has high tensile strength with less weight, which results in lowering the weight of ...
2
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1answer
62 views

Why are aluminum tubes folded at the end

I've noticed that aluminum squeeze tubes have a fold at the end. The fold is not the seal of the tube, as I can unfold and see the seal on the very end of the tube once unfolded. Wikipedia states that ...
5
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2answers
6k views

What is the opposite of flaring a tube (pinching?) and is there a tool to do this with aluminum?

I'd like to make my own structure that will hold roughly 50-100lbs of equipment. Since I need this to be portable, I feel like aluminum tubing would be the most practical. My structure will ...
1
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2answers
442 views

Calculating tensile strength for aluminium

I'm making a Z (coffee table) linkage with two interlocking C channels and a couple of steel linkage bars. While moving, they aren't load bearing but when extended, they will take a weight of around ...
1
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0answers
13 views

How to repair stripped, leaky pneumatic fitting?

I have a pneumatic cylinder with a stripped fitting, which causes a slow leak. I took it to a machine shop and he tried to re-thread it but there wasn't enough good metal left to get a good thread. He ...
1
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0answers
74 views

How do I to connect aluminium profiles with 60 and 120 degree angles?

I would like to construct an aluminium profile frame which includes connections with stiff fixed angles at 60 and 120 degrees. What options do exist for creating those connections, preferably without ...
1
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1answer
32 views

Is there any way to improve the strength of simple at-home aluminum/copper/brass castings (sand-casting hammers)

I'm just getting-into melting-down cans to make aluminum-based slingshots, hammers and the like. In my ignorance I didn't realize that copper/brass were also things that I could process which has ...
3
votes
2answers
109 views

Aluminum for an Ejection Seat Replica

I love ejection seats and the flying contraptions they usually reside in. In fact, I like them so much that I want to make my own, despite my profound lack of training and inexperience with ...
0
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0answers
43 views

How to produce aluminium powder by E. J. Hall method

I have watched videos on YouTube producing Aluminum powder by mechanical methods. Like this one. It uses Aluminum foil and coffee grinder: There are similar videos which use the same basic method but ...
1
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1answer
106 views

Tapped thread maximum load

I am building a stair from aluminium to go to my basement, the stair sides-plates are made from 10mm thick aluminium AWS 5454. I am planning to tap M10 thread into this plate. To avoid the step ...
1
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0answers
158 views

Building bed out of 8020 aluminium extrusion

I want to build a rock and roll bed out of 8020 aluminium extrusion, in order to avoid the bother of welding steel pipe. However, I don't have much of a 'feel' for how strong this stuff is. Will ...
1
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1answer
106 views

Is it possible to replicate a motorcycle engine cylinder head?

Is it possible to create a mold of an aluminium motorcycle cylinder head so that you can create an exact replica with melted aluminium?
14
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4answers
2k views

In aluminum machining, what are the most common factors that might cause a machined component to have warping issues?

I am currently having an issue where features of my machined parts are warping. I am using Alloy 7050 Type I and Type III in this particular case. Using a feeler gauge and a certified, calibrated ...
5
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1answer
8k views

Aluminum vs Steel rivets/fasteners in a high vibration environment

What are the relative pros and cons between aluminum and steel fasteners when riveting together sheet aluminum (50XX or 60XX) when high amounts of vibration are anticipated? Assuming that the usual ...
0
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2answers
79 views

Stresses in a camera mount

I'm building a mount for a small IR sensor which will look very similar to this, minus the large camera. I am wondering whether or not it would be necessary to do calculations to ensure that the ...
0
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4answers
1k views

Brake pad materials for use against an aluminium surface [closed]

For a project that I am a part of, we are in need of a brake pad material for use against an aluminum surface without causing any damage to it. So far through my research, the only safe alternative ...
2
votes
1answer
125 views

Aluminum sliding mechanism clamping

I have an O-shaped aluminum (7075) profile WxDxH - 40mm x 200mm x 25mm The inner channel is 20 mm wide and 10 mm deep - runs through the entire length of the bar. Inside, I have a 20 mm x 10 mm bar (...