Steel Definition and 840 Threads

ok guys, suppose i wanted to build a round 8m diameter 1m high pool out of galvanized steel sheet. I will be filling it 0.7m with water. I am aiming to reduce its cost so I am calculating the thinnest sheet i am allowed to use without it failing. I will be using 7 sheets bolted together(each...

Homework Statement Hello everyone I am studying for my finals and this question has me stumped. The ends of a cylindrical steel rod are maintained at two different temperatures. The rod conducts heat from one end to the other at a rate of 10 cal/s. At what rate would a steel rod twice as...

I need a hand choosing the right size, thickness and shape of steel for a bracket to mount an old style 5 gallon Jerry water can on a Jeep. I estimate the weight of the can + water + misc = 50 to 55 pounds. The bracket will be subjected to rough off-road conditions. In the drawing the red...

Hello- I recently etched an Altoids tin. I would like to leave the etched tin in an outdoor location as a memorial to something. The etching includes text, and I am worried about oxidation of the steel ruining the tin quickly. I would ideally like for this to last several years (as long as...

hey ppl, In a nutshell, need to come up with a 10mX2m foot bridge over a river made from steel and concrete also to include foundation design. borehole data are as follows. Depth. Description 0.2M Topsoil 2.60M...

Hi everyone. This isn't a homework question; just something I was thinking about and would like some advice on how I should tackle it. Homework Statement How can I approximate the Kinetic Energy Lost of a Steel Sphere when it collides with a soft sheet of material. A solid steel sphere of...

Shanghai Tian Yang Steel Tube Co.,Ltd. is a modern enterprise for tube making which is specialized to make the seamless steel tube of DIN series featured with high accuracy and brightness. Our company has the staff with highly educated and richly experienced engineers and the employees of...

Just out of curiousity, regardless that we can't reach it, can a star like that be mined? would it still retain its strength?

Hello guys, I just want to know how to heat & temper Steel/Iron at home. I can find the material easy I guess. I don't know how to start, how to reach 1,000 Fº at home to give a piece of Steel some "form", I want to give cuttings, curves, and shaping to that piece. But I know nothing about...

Hello guys, I really wonder how can I forge Steel at home. I want to give some cutting and curves to some pieces of steel I bought just to work with. But I don't know how to heat them, how to reach 1,000 Fº at home. I really want to give this pieces some curves and make some cuttings with...

I have a question regarding what material type and thickness could support a given load most cost effectively. Weight of the part will also be a factor in the cost due to the wacked out freight charges these days. I have no idea where to locate the information that I need or a formula so...

Homework Statement A cylindrical steel bar, 20-mm in diameter and 5.0-m in length, is subjected to an axial tensile load of 40-kN applied at the ends of the steel bar. Determine the axial extension, in millimeters, of the steel bar under this loading condition?Homework Equations E=\sigma/e...

Hey guys this might be a question better suited for the Materials Engineering section but I'm not sure how much they deal with welding. Anyway I am trying to figure out how much the heat from a typical welding process would effect a steel's yield strength. I understand that on a cold worked...

Hi, I have to design a steel structured truss footbridge. Im using beam anology to determine the correct member sizes. Having trouble determining the maximum design moment (M*) Here's what I have calculated thus far: Q=6kN/m G=1kN/m 50m long, 3m depth, 3.125m spacing Self Weight...

Hi, I have to design a steel structured truss footbridge. Im using beam anology to determine the correct member sizes. Having trouble determining the maximum design moment (M*) Here's what I have calculated thus far: Q=6kN/m G=1kN/m 50m long, 3m depth, 3.125m spacing Self Weight...

Hello everyone, I think this is very simple. I have very little knowledge about electricity and would like to understand a bit more about a simple experiment I was recently shown: Basically a steel nail was connected to an electrical circuit at both ends. The two electrical contacts to...

Hello, I'm looking to experiment with an Electrothermal-Chemical (ETC) system of accelerating a projectile. Basically, it will involve using energetic materials and large amounts of electrical power to create very high pressures inside of a tube in a very short amount of time, behind the...

I'm looking at a vent that will be used to prevent a tank from collapsing due to vacuum pressures in a pipe burst/free drain scenario. The situation would be a container is filled with water when an inlet or an outlet pipe bursts. The water flowing out would create some pressure in the tank...

Hi all new to the forum here. I'm a cnc machinist here in Austin Texas looking for some mechanical advice regarding the use of stainless steel in high strength automotive applications. Basically, I'm planning on starting up my own little business replicating obsolete and out of production...

Hi people need help on finding the proof stress of tool steel after heat treatment can't seem to get it thanks

3000 lb barrel 48" ODx 32" long; two 4" wide bands welded to od of barrel which are 1/2" thick; so, band OD is 49". Barrel (band actually) rests on (2) 3" diameter shafts; one shaft drives system; other shaft idles. shafts are steel, bands are steel. So, there is 8 linear inch per shaft of...

Dear Experts, :smile: Sorry if this post is created in the wrong forum. I am not sure how to tell if a metal is chrome plated or stainless steel. Is there a simple way to tell? Thank you for reading. sincerely Ramone

This topic has been discussed before at this site, but there was never any agreement. I have a very specific situation that I hope I can get a concrete answer, including equations and a step-by-step solution in inch/pounds/seconds units. A steel flat panel 6" X 18" weighing 3.25 pounds...

in the following question, i am dealing with steel which is assumed to be have elasto-plactic behaviour,- its stress strain graph will be linear to the yield stress with a slope of "E" and then linear with a slope of zero. i calculated and drew the P(delta) graphs for the 2 steel types...

I already did the first part, and the equation for the period becomes: T=2\pi(ml/\gammaPA)(1/2) I know 12 litres = 0.012 m3, and the the mass of the ball is the volume of a sphere of radius 0.01m x the density = 0.0318 Kg, for pressure I am not sure whether I am suppose to use 1 atm or 101.3...

Does anyone know where to find this steel? We've tried a bunch of suppliers and no one seems to carry it. Anyone know why? Steel, 4320 or 8620 Hot Rolled Grain Size 5-8 ASTM A29. Any help or direction would be great. Thanks, Scott

Hello, I am looking to use some stainless steel probes in a septic tank to indicate different water levels. i.e. bottom probe would be 0v then propes further up would be set at 12v and taken to 0V when the water level reaches them. Current draw will be very minimal 2 or 3 mA. The big question...

Hi, I'm constructing a waste water tank of 304 stainless steel plate and I'm not sure what thickness the material should be, the tank is approximately 2750mm x 1500mm x 1750mm What would the ideal thickness be for the 304 stainless plate and would there be any specific areas I should focus...

Hi forumer, I have 2 specimens that need to be done hardening and tempering. I have found some journals for it. But i don't understand the following statement. "10mins/cm of ruling section" ; and "1 hour per 25mm of section" If my specimens dimension are: A) 12.5mm X 12.5mm X...

What is the difference between steel plate and steel sheet.I need to buy a piece that is 7ga and 6"long/6" wide to mount 2 -4"bearings on that will be on top of a oven at 525degF.What grade steel to use and plate or sheet?

Hi, my name's Louis-Philippe and I'm a high school student FOND of physics. Unfortunately, I'm not yet a physicist and I can't ( yeah, I tried ) understand half of what's written on wikipedia about it. I'm also kind of an artist and our art teacher gave us carte blanche, so I decided to...

Homework Statement A 1000 kg steel beam is supported by two ropes. What is the tension in each? Homework Equations F = ma = mg The Attempt at a Solution I labeled the left tension as T_{1} and the right tension as T_{2}. \sum{F_{y}} = T_{1,y} + T_{2,y} -mg = 0...

Homework Statement I was given the problem to try experimentally find youngs modulus for normalized steel but when i did the equation the value i got was about 33 GPa. It is supposed to be around 200 isn't it? I cannot figure out what is wrong, am i missing something or is the measured data...

a concrete block weighing 20,000 lb is supported by 2 STEEL rods, rod AB has an area of 1 in and rod CD has an area of 2 in... what is the elongation of each rod...? http://s44.photobucket.com/albums/f46/maximus11373/?action=view&current=untitled.jpg&newest=1i don't know how to start, should i...

Hi all, just wanted to find out how is austenitic stainless steel made? Because when you heat the steel above certain temperature, your cementite starts to diffuse out and austenite starts to form, but the thing is this: if you allow the austenite to cool down, it reverts back to cementite and...

[SOLVED] What length of steel is above the surface? Homework Statement A 10-cm-diameter, 80.0 -tall steel cylinder (density of steel 7900) floats in mercury. The axis of the cylinder is perpendicular to the surface. What length of steel is above the surface? Homework Equations Free...

Hello All, I'm working on a project involving the use of electromagnets and I am trying to do some calculations to predict the B-Field strength of the coils I make. For the core, I'm just using some common 1/4-20 steel machine screws (the common ones you can get from Home Depot and Lowes) but...

Hello, I'm a complete laymen as far as any material science goes (engineering too), but i need Your help please. I have w steel wire rope, 2mm in diameter. i need to know two things: 1) i need to make make a "wire mesh", the simplest plain weave. however, i must make it in such a way...

I have a heat source inside a steel box. I know the outside ambient air temp and the amount of heat the source puts of. How do I calculate the internal air temp of the box?

Homework Statement A 120 cm-long steel string with a linear density of 1.2 g/m is under 100 N tension. It is plucked and vibrates at its fundamental frequency. What is the wavelength of the sound wave that reaches your ear in a 20 \circC room? Homework Equations Fundamental...

I have neither physics nor engineering backgrounds. I am trying to figure somethings out, and I need some basics cleared up. I will pose my questions as such: 1.) How would you go about rating the strength of steel? 2.) How would you go about testing the strength of steel? For example: is it...

Does it seem reasonable that a machine which has, up until now, been used for machining steel parts without, apparently, leaving them magnetised could be causing low level magnetisation of the same parts when made of cast iron? There are some DC currents flowing in the machine, apparently but...

Homework Statement so the rod is of length l, and the speed of a transverse wave is v_w. It asks for the possible frequencies f_i. The rod is held in the centre so a node exists here.Homework Equations look below The Attempt at a SolutionI know that v_w = \lambda * f_i So it follows that i...

Homework Statement I found that the steel plate weighs 23.1 kN from using the volume and density of steel. The length of L1=3.2m, L2= 3.9m. The angle on the left, theta, equals 94.4 degrees and alpha equals 54.9 degrees. I am just confused on how to find the tension in the cables. If someone...

Homework Statement A steel tank with a volume of 5 m^3 contains saturated R-134a at 10 Celcius. The liquid is then boiled away and disappears at 50 Celcius. What is the final pressure? How much liquid was boiled away? Homework Equations PV=nRT The Attempt at a Solution I pretty...

I'm inputing data into a SolidWorks material profile, but I'm having difficulty determining the value of the elastic modulus (psi) of steel reinforced concrete i'm looking at the following source for material properties: http://www.fhwa.dot.gov/pavement/pccp/pubs/05081/chapt3.cfm [for...

Hello; I have a strange practical issue. I picked up a steel barrel which was used to store dijon mustard. I intend to use the steel to fashion a hood for a small rivet forge. But, although the barrel has been cleaned, it still has a very strong smell. My question is: how can the mustard...

Gentlemen, I am a retired (after 35 plus years) secondary, college art teacher. For the last eight years I have volunteered at Habitat for Humanity. My question has to do with titanium and steel headed hammers. Titanium hammers have been on the market for awhile now. They cost anywhere...

I'm trying to calculate the max load of a rack made of 3X3X1/4 steel tube. It is 8ft long and 4ft wide. I just want to calculate the max load (distributed load) in bending cross the 8ft and also in compression for the legs. i can't find the right formulas. can anyone help? so far i what i...

Hi Im am trying to find out a predicted deflection of a steel rectangular beam of uniform cross section (which is 12.7mm wide x 6.4mm deep). The beam is simply supported at both ends and has a span of 660mm. The load is to be placed in the middle of the beam. I have the formula to be used...