Steel Definition and 840 Threads

I got a lift which goes into the trailer hitch in the back of my car for my wife's scooter. Only problem it was made for a wheelchair. I found the extension arms so I only need to come up with the 4 cross bars. When I lift the unit, the tires of the scooter and the weight will sit on two...

Hi all, I designed this swing set and now I'm doubting my self and getting concerned. I used 5" schedule 40 steel pipe for the posts and 3" schedule 40 steel for the top horizontal bar. There's only one post per side to be set 48" down in concrete 16" in diameter. This designed is to help...

What is the calculation of the thickness of stainless steel plates for a vacuum chamber if the chamber measures 400mx450x250. at a vacuum pressure of .06 mbar

Hi! I have done a simulation where I got out the load/displacement curve of a steel beam that is simply supported with an equally distributed load across the whole length (10 m). I want to field the point at which the steel yields. I am used to use the 0,2% value on a stress/strain curve, but...

I've never been a fan of working with iron or steel. Unforgiving material. I had no time for that. But recently, having seen the TV-show "Forged in Fire" on the History channel here in Denmark , I sorta realized I may have missed something. I hate quizzes, reality shows and the like but this one...

Someone on a machining forum is proposing a curiosity machine. Imagine two magnets, constrained to move along one axis, set N to N. They will move apart. If you insert a piece of steel in the gap, the magnets will move towards it. The input of the machine will be a rotating toothed...

Is there a formula to calculate the speed of propagation of sound waves through steel (a steel bar, for example) according to the temperature of steel?

A question, this. Something I would like to know. Practical physics I think. 'Applied physics' I believe. I wondered at the purpose and efficacy of 'steeling' knives and learned that the process is intended to repair damage to an edge rather than 'sharpen' in the sense of 'create a sharp...

I am building a batting cage in my backyard. The cage will be 12x12x70. I'd like to use 4 steel posts. The posts will be 4 feet into the ground. I was considering using 4 x .120 A500/A513 post and cable. Can the posts handle the load? I believe the net weighs about 140 lbs.

This isn't a question about torsion pendulums because it goes well beyond linear physics. The question is roughly, how many times can you rotate the end of a steel string, with the other end fixed, before it breaks? Also, how does the torsion distribute along the string? I tried to answer both...

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=?

Hi I'm looking for calculation example how to calculate iron losses in steel ring around current carrying conductor. I have tried to find examples online, but without a suitable result.

Hello guys, I started as a R&D engineer in a furniture factory. The factory asked me to find an alternative material to the s-spring and turn it into a project. This material can also be produced and should be cheaper than spring steel. The S-spring is made of 1070 and 1090 spring steels. In...

In this steel forging video, does the heat weaken the strong nuclear and electromagnetic forces allowing compression?

Why is this stainless steel ferromagnetic while that one is non/paramagnetic, how's each proportion of them and what's its key difference that'd determines such the distinction?

I had a rear 3/16" OD steel brake line in my car fail due to rust. I spliced out the area with the hole with copper nickel line, but, I noticed that there's areas closer to the engine where the painted surfaces have bubbled a bit. Unfortunately, access is such that I can't splice fresh line...

I have a VERTICAL standing square tube 1.25" x 1.25" x 1/16" thick. Length/Height = 79" Material = steel How do you determine its max load capacity for this tube when mounted vertically? I plan to use 18 of these vertical posts, evenly spaced, creating an 83" x 131" rectangular structure. They...

I have a steel cage 7 ft by 11 ft and 7 ft high. It's made out of standard 1 in square steel vertical tubing. Each vertical tube is spaced 18 inches apart all the way around the cage. All vertical posts are welded to a 2 in L-bar all the way around the top, and the bottom. I'm trying to...

In what condition and how definitively galvanized steel is lower in mechanical performance and counts to be ruled out replacing high carbon steel ?

Roughly, how much force does it take to make 1 mm surface bump of diameter 16 mm circle area out of 1 mm thick steel plate of far larger area (e.g. a muscled hand pounding it laid over the base with 16 mm dia. hole by M16 bolt medium is viable enough) ?

Hi everybody, I don't have M700 grade silicon/electrical steel data to add to Maxwell Electronics 2D Material Library. How/Where can I find this data? Could you help me? Thanks, Oguzhan Gonc

If I know the standard of the steal I have let's say ASTM A709 grade A how do I determine the temperature and time necessary for any heat treatment to be done on it?

Hi all In order to make a metal preframe for a French window as an entrance door, I began to estimate the possibility of building it in rectangular steel tubes of 100 x 50 x 3 mm, laid independently of the walls that could not accept such a load because it was timber framed. The preframe will...

If we assume that ##\psi## has a Fourier transform ##\hat{\psi}##, so that ##\psi(x,t)=\frac{1}{2\pi}\int_{-\infty}^{\infty}\hat{\psi}(x,\omega)e^{i\omega t}\mathrm{d}\omega##, then the wave equation reduces to ##-\rho\omega^2\hat{\psi}(x,\omega)=E\frac{\partial^2 \hat{\psi}(x,\omega)}{\partial...

DC case - but customer ran their cable run through a couple boxes, this would not be allowed in AC due to the eddy current created in fittings and the enclosure steel. ( I do not even know if code would allow this for DC) - but anyway. This is part of a high power dc system and I suspect the...

How did you find PF?: looking for simple formula to calculate force needed to raise steel tower. I am not on social media and have no idea how to use a forum. at almost 80, I find having to hand crank a ham radio tower up and down to be challenging. I must lay it down to work on the antennas...

Hi, I have developed a catenary software that calculates the tension force resulting from the wire and now I am working on suitable fixing methods and including the option for this within the software. Has anyone got any guidance on working out the stresses applied on the attached...

Manufacturer information: Interior material: stainless steel Exterior materials: Stainless steel Keeps cold liquid for: 24 hours Keeps hot liquid for: 12 hI was looking for a thermos bottle and came across a situation that I'm having a hard time answering. Why is the cold keeping time different...

Water heaters have a sacrificial anode rod inside of them to protect the steel tank. These rods are usually made of magnesium or aluminum, and sometimes zinc. Please note that zinc anodes are made of a combination of aluminum and zinc, 1 proportion of zinc to 10 proportions of aluminum. I...

Have a lifting yoke with 7/8 inch lifting eyes welded onto the ends of a 3/16 or 1/4 inch wall 4x4 a500 or a513 square steel tube. Expected UDL is as much as 35-40,000 lbs. Is this tube going to fail?

Hello ,all I'm calculating the force that required to push steel rod up 50 cm into water filled steel tank . pls see picture . If i exclude negligible friction force (which is friction between steel rod and water sealing gaskets ) Total Force = Force to lift 40 kg rod + Fluid Force...

I am working on a new application and am trying to figure out how I can calculate the cooling rate of Steel. I have a load of Steel Tubes. 1200lb total mass. Tubes have some variance on size depending on what is being run on a given day, but nominally, we are looking at 1" OD x .1875" Wall x...

Hello everyone. I'm building myself a half-rack for weight lifting that included 2 overhung support beams above from which to hang a safety strap incase of a failed lift. They are made from 2x3x.125 steel tube (they're Oriented with the 3" vertically). The tube are overhung by 21". How much...

How did you find PF?: Google Hi 👋 I have a question 🙋‍♀️ that’s needs help Can I calculate the following ? 1. A person slams a door gate 2. Calculate the force given the height and weight of a person , and the area of the door gate 3. How to calculate the decibel produced by slamming...

I don't understand why the answer is B. Here's my thinking: Since it wasn't mentioned that there's any other force aside from the drag force, then Fnet = Drag force I know that Fnet = ma, and since they have different masses, Fnet must be different for both balls? Acceleration cannot be...

Hi group, I heated a steel spring until red hot then plunged in water quenching it. My understanding is that quenching so quickly would have an effect of the grain size such that I would expect it to be much more brittle as with small grain there is much less plastic deformation possible (as...

I have a problem, I need to calculate the torque required to rotate a steel tube 150mm OD, 90mm ID which is being pressed against a identical tube with a force of 100 Tons also the estimated torque imparted if the above parts come into contact with one part static and the second part rotating at...

Hello, I have a question regarding BH-curves and relative permeabilities from electrical steel datasheets. When e.g. looking at the datasheet from the isovac 330-35A there is the data for the J/H-curve. I calculated B=mu_0*H + J and mu_r=B/(mu_0*H). When evaluating this calculation pointwise...

Hello, I have a general question for the flows of steel-making up to the casting process. Is the general flow depicted by the image correct? This specific process relies on natural gas reforming to produce H2, which is then used to reduce iron ore. Are there any corrections that I have to make?

I have a weight of 30,000 lbs distributed across a span of 100' and supported at the ends. If I have 3 beams to support this load, each beam would then need to hold 10,000 lbs, and with a F.S of 1.6 each beam would need to hold 16,000 lbs. If I assume my max deflection at 1", then I can find the...

how to find a maximum load on a steel square tube that has one fixed end to the wall and another end is hanging free. suppose the beam is 2230 mm long and the load is applied on the beam on the free end w= 1040 mm. but there also a steel square tube that welded to the middle of the beam and...

I'm going to purchases some flexible downpipe for my home, for toilets and kitchen, in the market I can find mainly stainless steel or ABS, which material is usually more inert to common home liquid wastes and chemicals? From time to time I will flush some drain unclogger or other cleaning...

Hello engineers, Is it ok to use stainless steel bolts in an anodised aluminium clamp? I know that I should avoid using stainless steel with plain aluminium because of risk of corrosion. Also, what torque would you recommend that I apply to an M10 stainless steel bolt in an anodised aluminium...

it sounds like you just need to use F/m = a which gives 25 / .76 = 32.89 = a this didn't work so I tried to get the x component of acceleration so I did 32.89cos(45) = 23.26 and this didn't work. what am I missing, the force is tension right so it should be 25N?

I work in injection molding and I am looking to make some sort of standard for how many bolts are needed to secure what we call a "manifold spacer block". We are constantly battling each other about blocks being under or over secured, and as a manufacturing engineer, I am interested in knowing...

Hi all. Given a piece of a steel 1018, as an example, with a spicific mass, how can one calculate the magnetic saturation-point of that piece either using mathematical or measuring methods? I've seen graphs stating the saturation points of different ferro-magnetic materials but, I assume, it...

Hi All, this is a steel frame , top beams sitting on top of column with steel plate cantilever at both sides (one side longer than the other) , so there will be hogging moment at the center support. However, the top steel beam is one whole piece, does the connection between the steel beam and...

Hello, I am a retired electrical engineer who likes to tinker and invent. As I am getting older I find the moving of logs is getting harder to do, so I am thinking of building a boom crane to attach to the 3 pt hitch on one of my tractors. The design would basically be a class 3 lever, with a...

I have a machine I am designing that has a carriage supported by Track rollers on a machined flatbar track. The load that each individual roller will experience could reach 2000lbs. worst case scenario. The track surface is machined 304L - 1" wide as you can see in the green in the attached...

Here I'm going to show all that I've understood - 1. 2. 3. What I've attempted - L = Lo (1+ α * ẟT) ẟT = 150°C - 15°C = 135°C (Steel) L = ẟL (1 + 11 * 10^-6 * 135) (Copper) L = ẟL (1 + 17 * 10^-6 * 135) This doesn't get me anywhere, obviously. Am I supposed to understand from the...