Steel Definition and 802 Threads

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...

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...

If there are magnetic and non-magnetic stainless steels,( Martensitic, Ferritic & Austenitic) because of their different physical properties, then what are the trade-offs ’? For example: Being magnetic is it less durable in resisting rust, scratches ext.) ? Can you mill or roll one...

i need some in information of adding (Manganes to steel )

I am building a new deck - from wood tables I know that my joists need to be 2 x 8 to span the 10 feet of my pond filter pit that is built below the deck. I do not want to give up 8 " of head room while working under the deck - so I am considering steel of some shape or form to use for the...

Hi! There's got to be something wrong with the following method to take photographs of the area inside a supermassive black hole, but I can't figure it out. 1. Lower your spacecraft to just outside the event horizon. 2. Extend a uniform steel bar with cameras embedded in it...

I can't find any info on this type of A26.. can anyone help me out? Thanks in advance!

Homework Statement The wires on a violin have a cross section of 5.1*10^-7m^2. The wires are put under tension by turning the wooden pegs. The Young Modulus of Steel is 2.0*10^11 Pa. Calculate the tension required to produce an extension of 4*10^-4m. Homework Equations Thats where...

I've recently completed a fatigue lab for a CT specimen of steel, and I wanted to compare my computed values of Paris' Law coefficients with previously published data for error analysis. Does anyone know where I can find the values for C and m? Repeated Google searches have born me no fruit. It...

I need to move a block of steel 1.5 inches vertically, and another piece horizontally 3 inches. I was thinking magnetics. Are hydraulics viable? What else could work?

Homework Statement Because gasoline is less dense than water, drums containing gasoline will float in water. Suppose a 260 L steel drum is completely full of gasoline. What total volume of steel can be used in making the drum if the gasoline-filled drum is to float in fresh water...

Homework Statement Attached to each end of a thin steel rod of length 1.00 m and mass 6.80 kg is a small ball of mass 1.15 kg. The rod is constrained to rotate in a horizontal plane about a vertical axis through its midpoint. At a certain instant, it is rotating at 43.0 rev/s. Because of...

A soap bar made of stainless steel. You wash your hands with it under running water. 1] Do they have a scientific basis? 2] Do they work? http://www.kaboodle.com/reviews/rub-away-odor-bar

How much work must you do to push a 13g block of steel across a steel table(coefficent of friction=.6) at a steady speed of 1.2 for 8.8 ? I know that Work=Force*Distance i know what the D is but i don't know how to calculate the force. i tried F=MA and got Fnet= Force pushed...

How do you calculate the thickness or gauge of a given metal (304 Stainless Steel for example) for a 36" dia. round, vertical cylinder water holding tank? If filled say the tank would be 25-30 feet tall. No physical pressure (pumps or vacuum) on this vessel (vented to atmosphere). Flat...

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 (prob for just the 8ft sides) and also in compression for the legs. i can't find the right formulas. can anyone help? so...

We were asked in our Manufacturing Processes class to design a process for the manufacture of AISI 304 stainless steel sheet. Starting with hot rolled sheet 9 gauge (U.S.G.) in thickness and 32” wide. The final product is required to be 30 gauge (U.S.G.) in thickness and 32”. Our design needs...

For my job I have to calculate the maximum shear stress in a triangular thin wall steel beam. I know how to calculate this for a retangular shape. The general formula is: tau=Vy*Sza/(b*Iz) with: tau= shear stress Vy=force Sza = statistical moment b= width Iz = moment of Inertia I...

Why does the magnetic field increase significantly when stainless steel is placed behind a magnet? "B (flux density): This is the measurement (in Gauss or Tesla) you get when you use a gaussmeter at the surface of a magnet. The reading is completely dependant on the distance from the surface...

Hi everyone, I just joined and was wondering if anyone could help me in finding the cyclic fatigue properties of Chinese steel, specifically 30Mn2? I need to perform a fatigue life analysis on a Chinese truck spindle, but cannot find the properties anywhere. I have tried to match the chemical...

A horizontal hollow rectangular mild steel tube 30mm x 50mm with 4mm wall thickness and 350mm long, which is part of a frame has 2 lengths of studding 300mm long , 180mm apart and equidistant from the ends, welded to the 50mm face of the tube. A total perpendicular load of 400Kgs is...

Homework Statement mass of steel ball = 40g = .04 kg h1 = 2.00 m h2 = 1.60 m A steel ball is dropped from height of 2.00 m onto horizontal steel slab, rebounds to height of 1.60m. Calculate impulse of ball during impact. Homework Equations impulse J = F*dt J = P2 - P1 I tried...

I have a heat transfer question, I work in a plant and am doing a re-insulation project. If an unexposed steel steam pipe (k=47) of diameter 10 inches, maintains an internal temperature of 460F and is exposed to ambient air (70F) flowing at 5 mph across the pipe. Determine the heat loss per unit...

Who can help me call BS on the physics of something I just watched on TV. Ok let me clarify that statement, of course 90% + of what's on TV is BS but this particular show is a documentary style that so far seemed reasonably well grounded in fact (though at times somewhat contrived). The show...

I am designing a component (Cam Driver) that has 2 features. One feature that acts as a cam, it slides against another component with heavy surface stress to move the other component. The 2nd feature of this Cam Driver is a threaded rod that mates with a piston in a pneumatic cylinder, thus...

Homework Statement A small bead with a mass of 100 g slides without friction along a rotating semicircular steel wire, where the semicircle has radius 10cm. The steel wire rotates about a vertical axis at a rate of 2 revolutions per second. Find the positions at which the bead will be...

Hi, I want to know that which one is more elastic: steel or rubber. and why?

Hi I needed to design for a steel plate of S275 steel (275 N/mm2) that will resist a tensile force = 2 x 65 kN = 130 kN. The steel plate must not bend due to this tensile force = 130 kN. And I need to determine the minimum steel plate thickness that will resist the bending (due to the...

Homework Statement An aluminium sleeve of internal diameter 4.000cm at 10 degrees Celsius is heated and slipped over a steel rod of diameter 4.040cm (at 10 degrees Celsius. When the aluminium sleeve and steel rod return to room temp they are impossible to separate. Assume that the...

I am not sure how to approach this problem. If you have a carbon steel pipe that is being heated on one end at a constant temperature of 1500C. Can you figure out how much distance in pipe will it require before it cools to 790C? The thermal conductivity of Carbon steel is 54 W/mk. Another...

I am doing research into an internal corrosion/erosion problem on a methanol pipework processing line. The pipe is made out of carbon steel and I am looking at replacing it with a duplex steel like Inconel 625 or HASTELLOY. Does anyone know how I could go about working out the costs involved so...

Hello all, im trying to find some data for the static COF for rubber on steel. I have been looking hard but can only find info for rubber on concrete and other non metals. I am doing the initial sums for a combat robot I am designing, but want to get the figures sorted out before i spend...

Hi every one. As Steel Frame Manuel mostly discribe the force analysis in vertical loading, I wonder how can i solve the following case, a member that suffer torison. Is there any reference book you might suggest me to read ,too? Thanks for your kind help. The attached are the cases...