Steel Definition and 840 Threads

Homework Statement An angler hangs a 5.50 kg fish from a vertical steel wire 1.30 m long and 4.32×10^-3 cm in cross-sectional area. The upper end of the wire is securely fastened to a support. Calculate the amount the wire is stretched by the hanging fish. (I found this to be 8.11x10-4 m)...

Hi, We have a steel tube with yield limit 1000 N/mm2. It is 250 mm long, outside diam. is 76 mm, inside diam. is 60 mm. It is plugged at both ends. Inside pressure is 0 (zero) and outside pressure due to submersion is 69 Mpa. Will this be safe? How can I calculate what pressure that would be...

Hello All. I'm trying to evaluate a design based on first principles. I have 2 trusses made from RHS (simple A frame) between which I wish to tech-screw a sheet of 2.9 mm galvanised sheet. Loading will primarily be from material (i.e. soil to a max depth of 400 mm) being placed on the...

...at greater then the speed of sound in cheese. The leading molecules of cheese cannot transmit the force of impact backward because the speed of force propagation is limited by the speed of sound in cheese so the molecules must move either sideways or into the steel. If the steel is strong...

I want to make a sheet of 1/4" steel rust through completely in a short amount of time (2-3 weeks). What is the best way to accomplish this, if possible?

Anyone? Anything? Even if I'm making little smiley faces on graphite? I'd love to make something that's more complex using steel, even if I have to stitch it together atom by atom.

Does Ohms Law have practical limits? For example:A piece of steel wire of length of length 10um and of CSA 20E-10. Can we calculate the resistance of such a tiny piece of wire (resistor) in the usual way? thanks

Homework Statement Comic-book superheroes are sometimes able to punch holes through steel walls. (a) If the ultimate shear strength of steel is taken to be 2.60X10^9 Pa, what force is required to punch through a steel plate 1.60 cm thick? Assume the superhero's fist has cross-sectional...

Homework Statement I am trying to calculate the natural frequency of a steel beam. Homework Equations I=1/12*W*T^3 Volume= T*W*L M0=V*ρ K=(3EI/L^3) Meff=(33/140)*M0+Mend ωn=√(k/Meff) The Attempt at a Solution This should be a simple plug and chug problem but I can't see what...

Dear all I am trying to work out a price of steel pipe that I have. I have 900 metres of 9 5/8 inch pipe it weighs 40 pounds per foot and the price is $1,600 a metric ton. Now if I want to get the price per metre then I understand that I have to divide by 2204.62, which is about how many...

A steel bar that is 16mm in diameter is resisting a force of 25kN. What is the normal axial stress in the bar(MPa) Since MPa = N sqmm would it be 25kn/(0.016m x 0.016m) Im more after the process on how to get the answer than the answer itself.

Does anyone have any empirically based equation for estimating torsional shear strength of a tube made from a given steel. I've seen "estimates" ranging from 57% UTS to 75% UTS, but nothing empirical. I'm open to anything based on UTS, a given offset strength, or JAEL yield. Thanks!

Hello All, I'm hoping someone can assist me in locating a stress amplitude vs. cycles curve (S N curve) for a Duplex Stainless Steel. The particular material I'm using is SAF 2205. I have been searching far and wide, including the Atlas of Fatigue Curves, but I have not been able to find...

Hi, So the other day we performed the Jominy quench test on 4 different steel samples. We followed the standard procedure (heating to austenite, then quenching it at one end, then polishing and etch it for micrograph examination) Now I need to write about the expected phases in each steel sample...

Is Passivation to s/s = to Zinc Clear Coating of s/s? I know passivation is adding a layer of chorosion inhibtor the the surface so can this layer be clear zinc or are these different means of coating s/s?

Hi, I want to try and make some steel alloy in an induction furnace. I have gone through youtube, Engineering Books, Internet and yet I haven`t found an answer that will completely explain how to make steel alloy. In what form are the components like Si, P, Mg, Mn etc added to...

Homework Statement I need help specifically with b. The inner diameter of a steel ring is 2.0000 cm, and the diameter of an aluminum disk is 2.0100 cm. Both are at 430 C. At what common temperature will the disk fit precisely into the hole in the steel ring? b) If after the aluminum disk is...

Lattice Constant: 7.956A – 7.936A Density: 3.696 – 3.691 g/cc Form: Polycrystalline Melting Point: 2150°C Young's Modulus: 46.9x106 psi Shear Modulus: 18.9x106 psi Poisson's Ratio: 0.24 Hardness: 1850 Kg/mm2 (Knoop Indentation, 200g load) Fracture Toughness: 2.0 MPa-m1/2...

Homework Statement A mild steel beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart. calculate the dead load that can be safely supported when applied to the middle of the beam? Homework Equations The Attempt at a Solution given data...

Cantilever Steel Tubing Beam Homework Statement I am trying to design on paper a cantelever beam made of steel rectangle tubing. One 60" vertical section will be bolted to the concrete while a 2nd section 40" long will be welded to the top hanging over horizontally. At the end of the...

Hi, I once read (but simply now cannot find the site again!), that if you magnetize a magnet through steel, you can make it thousands of times stronger. Is this when you create the magnet, or does this mean when you build a magnetic generator, you need to attach the magnets to steel to...

I want T91 steel with high quality,but not very much for irradiation research.I would be very thankful if someone shows me where I can get some.

Hello, Quick question on how you would go about calculating this. A grade of steel has the following properties; Tensile strength = 300 N/mm^2 - (not relevant?) Youngs Modulus = 200 GPa Poisson Ratio = 0.3 The grade of steel is 2m long, with a 20mm cross sectional area. It is positioned...

Homework Statement A sound wave with frequency 2 MHz is propagating through water and hits a ship hull made out of steel. The effective value (RMS?) of the acoustic pressure in water is 1kPa = P0w. The acoustic impedance Zw for water is 1.46*106 and for steel Zs it is 4.03*107. The wave...

Hello, I have one short question. Can I somehow get the information of the composition of the material (percantage of certain metals inside) if I have these data about it: carbon steel API 5L Grade B Schedule 40? I would appreciate your help veeery much! Regards Amy

Hi, I am a newby to all of this, can't find any good answers on the internet, hope someone with experience can help! If I have a solid steel pole with a length of 50 cm, hang this from a roof, and want to hang a 7 kg object from this pole, how thick does the pole have to be? If I reduce...

Hello Is there some data or some formulas to calculate how much does steel wire creep at a constant stress? If I have, for example, a 1 m steel string with 1 mm diameter under a constant tension of 1000N at a temperature of 20C, how much does it creep or lengthen in a year? I tried...

Ok folks, newbie here, with ideas of granduer. I need to find out if the magnetic resonances of 304 stainless and 316 stainless. I know that the differnet compositions of metal alloys will have diferent magnetic properties. ie, the amount of iron ferrite in stainless should have a corresponding...

a steel top which remains upright when not spinning has an electromagnet pulling on it from the side. Q=does it make any diff how much the emagnet moves the top sideways if the top is spinning or not? Please dirregard the friction factor at the bottom point of the top. thanx

What do people in the industry usually mean by steel cord? Is it the same as steel wire, steel rope? Pictures, Wiki, professional article/dictionary would be appreciated. I googled it but the results are still quite too blurry. Thanks in advance!

A camshaft journal bearing was damaged due to oil starvation. after camshaft is replaced. Using a proper epoxy resin to fill in the damaged / pitted journal surface then honing the journal back to the standard size. After that adding groves or small pits that would work as oil pockets...

Hello, I had to measure the resistance between different sets of bridge deck reinforcement steel bars using a Wavetek HD110T multimeter and a wire. The values varied between 1.9 to 2.8 ohms. When I measured the resistance of the wire itself, it came out to be 2.1 ohm. I could not...

To simplify things, I have assumed the keel section is a rectangle and not a foil. (Also, these specs are taken from an existing design.) dimensions: keel 38cm (width/chord) X 3.8cm (height/thick), length 1.64m, bulb 445Kg Using beamboy, (cantilever with weight at end) the deflection is:-...

I have two probes. They consist of a stainless steel cylinder inside another, one held by epoxy and one held by acrylic. I can measure a voltage difference between them. I have placed them in tap water and applied a 5V difference across them then disconnected the voltage. The problem is that...

Does anyone know if steel is still magnetic at over it's melting temp? If it does lose it's magnetic properties as a liquid, at what point does it happen? Gradual or at a certain temp?

Hi. I am trying to calculate the thermal stresses in a steel cube which is placed inside another steel cube of bigger dimensions, supported by steel bars at the base and sides. Both the cubes are in contact with fluids at different temperatures. Can someone please suggest the methodology as i...

in a question i have been asked to assess a steel structure made of two IPE beams given the attached schematic my question is regarding the buckling of the IPE400, to find the coefficient "K" i have used the julian-lawrence nomogram. as far as buckling about the Z axis goes, the...

Hello all, I am currently working on a project which entails the following: There is a steel fence which is welded to steel sheet pile which is slowly beginning to collapse; much similar to that of the "Leaning Tower of Pisa". The sheet pile is driven 12 feet into the ground and the fence...

Hi there. The thing is that in my laboratory project me and my companion tried to determine the rolling coefficient resistance for a steel ball rolling over an inclined plane of aluminium. Everything is fine till there, I've donde almost all the work. The thing is that I wanted to reference...

Homework Statement Calculate the fundamental frequency of a steel rod of length 2.00 m. What is the next possible standing wave frequency of this rod? Where should the rod be clamped to excite a standing wave of this frequency? Homework Equations Fn=nv/2L The Attempt at a Solution since the...

Homework Statement The question i need help on is question 6 part (c). I think I need to use the equation: 2. Equations used: \DeltaL = \alphaL\DeltaT Linear expansion of steel: 12x10 K^-1 (\alpha) Density of steel: 7800 3. My attempted solution: I tried substituting in the...

a beam with an effective span of 8.2m is required to carry uniformly disributed loading of gk = 12 kNm-1(in additon to its own self weight) and qk = 10kNm-1. design a suiable reinforced concrete beam using strength class C30 concrete and high yield reinforcement could somone check my...

steel floor beams span 7.0m and are at 4.2m spacing. the beams are fully laterally restrained by precast concrete floor slabs, 180mm thick, which they support. the floor has to support a speciified imposed load of 5.0 kNm-2. determine a suitable grade S275 steel universal beam section...

Hello, I have a production problem and would welcome any ideas which would make this task easier. I need to fill a 5 meter tube with pellets of 5mm grain size. The inner diameter of the tube is approx 40mm. Here's the problem...I need to fill the tube while the pipe has only a...

Im making an A frame to tow a quad bike behind a car, i need to know something because it affects the design. Imagine a steel tube of an arbitrary length of 1 inch diameter, and 2mm thick walls.. It will have a specific inherent strength before load causes it to buckle or deform. now drill a...

May i know what is the emissivity for carbon steel ? Is it suitable for me if i using IR thermometer(with emissivity 0.95fixed) to measure cutting temperature ?

I would appreciate some help in finding data if any is available, on tensile and/or yield strength of W1 water-hardening tool steel in the annealed condition. All data I have been able to find makes reference to mechanical properties in hardened and drawn condition, because that's what you do...

Newbie to the forum, so forgive me if I post this in the wrong place! If I heat steel (a bearing outer race to be exact) from room temperature to approx 200C, the hardness of the steel will reduce. If the temperature is then allowed to reduce back to room temperature, what will happen to the...

We have a water pipe which is 750mm diameter assumed running full with a flow rate of 152l/s. When the water exits the pipe there is a steel wall approx 1.2m in front of it and I need to determine the force that the water exerts on the wall? I have claulcated that the water is running at...

Hi All, Thanks for your time. I'm not an engineer nor do I play one on TV. Last time I did any load calculations was in a some college M.E. classes and that was so long ago we were all still using slide rules just a couple years before. No really. I'm going to build a fold-up table for my...