Steel Definition and 802 Threads

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...

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...

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 ?

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...

Background - I am a retired aeronautical and mechanical engineer (70 years old) and closed my consulting/manufacturing firm about 2 years ago. My technical books are still in storage and I can't get to them right now. A friend has asked me to assist with some machine design calculations and...

Hi I need a way of joining a very thin strip of stainless steel mesh to form a cylinder. It forms the 300 micron mesh cylinder that sits inside a inline "Y" type strainer. The one i have currently doesn't seem to be joined by adhesive but by a heat crimp or sum sort of non...

I want to design a welded structure steel stand to hold the weight of 600 pounds, by using 4X4 square tube. Please help me to find the thickness of steel tube.

a steel rod, 40mm in diameter and 1.00m long, is pinned at each end i) calculate the euler buckling for the rod ii) identify three other possible end fixity conditions for the rod and demonstrate how euler buckling load would be affected in each case iii) explain the relation between the...

The A-36 steel rod is subjected to the loading shown. If the cross-sectional area of the rod is 50 mm^2, determine the displacement of C. Neglect the size of the couplings at B, C, and D. Please help, I don't have any idea how to begin. I can't seem to sum the forces right.

What is the best way to distinguish and separate chrome steel, carbon steel, and stainless steel? I.e., if I had balls of chrome steel, carbon steel and stainless steel that were all of the same size, how could I tell them apart? The weights of the materials are very similar, and I am looking...

I cannot find the strain hardening (n-values) for steels online anywhere. I need to see a bunch of typical values if possible. Can anyone direct me to a online website? Or atleast mention what the typical n-value is for a low carbon steel? Thanks

I am looking to build a trapize style hanger that will be fabricated out of 2"x2"x1/4" cold formed steel tube 10'x4'x10' the shape is a U any idea where I can find the hanging weight of this type of hanger?

I have 6" Carbon steel pipe Question. I am working on a project. I have 6" Carbon steel pipe which I am going to use 10" High Density Polyethylene Pipe(HDPE) to sleeve and protect 6" pipe from corrosion. This pipe will be buried. I am trying to use electrofusion coupling to connect HDPE. The...

Homework Statement A 5.0-kg ball hangs from a steel wire 1.00 mm in diameter and 5.00 m long. What would be the speed of a wave in the steel wire? Hint: Density of steel = þ_steel = 7.8 * 10^3 kg/m^3 Assume that the string is a cylinder to calculate the volume. m = 5.0 kg l (length) =...

Homework Statement A lead bullet at 320K is stopped by a sheet of steel so that it reaches its melting point of 600K and completely melts If 80% of the k.e of the bullet is converted into internal energy calculate the speed with which the bullet hits the stee sheet. Homework Equations...

My Finite Element Analysis Professor posed a question to us in lecture and asked that we do a little research on it while at home. We were talking about the Bulk Modulus of Water and Bulk Modulus of Steel. I looked them up and for Water it is 2.2 GPA where as Steel is 160 GPa. He asked, why...

Homework Statement http://img20.imageshack.us/img20/2223/mateb.png The Attempt at a Solution Assuming that the guitar string is made of martensite and the metal chain link is made of carbon steel, I think that the metal chain link would have a higher toughness. My reasoning behind...

Question: A steel washer is suspended inside an empty shipping crate from a light string attached to the top of the crate. The crate slides down a long ramp that is inclined at an angle of 36^\circ above the horizontal. The crate has mass 156 {\rm kg}. You are sitting inside the crate (with a...

I'm trying to control the temperature of a wire/steel rod in my experiment. (of various size from a simple wire to a steel rod of diameter 5mm) In my preliminary experiment, I simply heated with alcohol lamp. But I'm not so sure which equation to use and if Q=cmT is the right equation, how I...

Homework Statement A steel rule is calibrated for meauring lengths at 20.00 C. The rule is used to mesure the length of a Vycor glass brick; when both are at 20.00 C the length is 25.00cm. What is the length of both the rule and the brick when at 80.00 C Homework Equations coef of glass...

can someone help me with this. you have a free falling weight such as a 500 lb. steel ball dropping from 3 ft. How much force will the weight produce in ft. lbs. or tons when hitting the ground. what is the formula for figuring this. Also, will the amount of force double if dropped from 6 ft...

where or how did language come from ,ive been thinking about this for a long time i think it may have evolved ,very slowly like this maby many thousands of years ago a leader or head of a tribe might have used words or noises or grunts close to what we now know to get the attention of his tribe...

Homework Statement Steel object is pulling uniformly through the ice with applied force 2 Newtons. Find object's weight (P), if k of friction is 0.02 Homework Equations F = 2 Newtons k = 0.02 P - ? F = m*a P = m*g The Attempt at a Solution I drow all forces and made this: ma =...

Hi Kind of a random question, I know, I just think this is a great place to get a answer. Anyway, I have a single cab pickup truck. So of course I have a very light back-end, to compensate for this in the winter for more traction I have been putting in a solid steel plate my Dad bought...

Homework Statement Given: hollow steel shaft Torque = 5400 Nm Torsional Shear = 150 MPa Required: Inside diameter Outside Diameter Stress on the inside of the shaft Homework Equations The Attempt at a Solution I solved both the diameters which are 64.49 mm and 48.37 mm...