Steel Definition and 840 Threads

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...

A 3.5 m long steel member with a W310 x 143 cross- section is subjected to 4.5KNm torque. Knowing that G=77GPa, determine (a) the maximum shearing stress along the line a-a, (b) the maximum shearing stress along the line b-b, (c) the angle of twist...

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...

We have an application that requires the building of a mock-up for training firefighters. The mock-up will be steel (plate/sections and approximately 30 feet long and 10 foot high) and will be exposed to a fuel-rich propane fire (probably in the 600ºC or higher range). The duration of the fire...

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...

I hope I don't get in trouble, but I posted this in the basic physics and it occurred to be that it is not basic and would fit better here :) Homework Statement Treatment lasts 15 hours. Oven starts at 300 degrees Oven ends at 100 degrees Max temperature: 500 Min temperature: 50...

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...

Hey! Been doi some coursework from a text but can't seem to find any solutions so don't know if I am even remotely close to the right answer. Q. A steel ball can float on water due to the surface tension effect. a) Determine the maximum diameter of a steel ball that would float on water...

does anybody know of bearing steel that can absorb shocks , and could you help me with its composition and its physical properties like tensile strength, specific gravity, malleability , etc regds

Hi, I'm looking for the magnetostrictive properties of bright mild steel (C = 0.15). I'm especially interested in its elongation vs magnetic field strength curve. I've been looking everywhere and can't seem to find any data. Currently I'm busy with my engineering thesis on pulse-echo...

Homework Statement A crane consists of a crane arm which is held in place and moved by strong steel cables. The crane arm is a truss structure, which is a rigid framework of quite thin steel beams welded together, forming many triangles. The cables are made of steel and they are not one...

How are atoms inside a steel arranged? Ussually we can get the data about the mass share of different elements of steel and the lattice type. But the lattice only tells us where an atom is situated, not the type of the atom. Can we tell anything about the type of the atom at a certain...

Hi everyone I work for a very small company, which produces steel products. Predominately from one particular hot rolled steel profile. (1040 grade) We currently subcontract our hot rolling to small chinese operators :( I know... At this stage our volumes are not large enough to warrant...

Can anyone please help me with a question re the minimum size square steel pipe needed to bear a load. I loved physics but never took mechanical engineering. I am rigging a winch to one end of a pipe to lift a static load (holding up a gangway temporarily to repair). The gangway weighs around...

Homework Statement A 17.85 cm diameter, 32.4 cm tall steel cylinder (ρsteel=7900 kg/m3) floats in mercury. The axis of the cylinder is perpendicular to the surface. What length of steel is above the surface? Homework Equations vsub/vobj=(ro)obj/(ro)liquid The Attempt at a SolutionA...

I have a removable gooseneck semi-trailer (RGN) I am going to stiffen it to hold a higher capacity. 30 ton to 45 ton. This hauls large equipment. (yellow iron) I know from experience what to use and how to do it. Is there some one here that can do the calculations and make a drawing of the...

HI I am a research student working on high frequency behaviour of inductive couplers. I am looking for BH loops of steel from various frequencies (dc-1MHz) range. Can anybody provide this data ? Thanks in advance Faisal

I have two questions about carbon steel. How does the carbon content of steel effect the rate of corrosion? Apart from providing strength to the steel, how does carbon effect the properties of steel?

Homework Statement A steel drum contains oil with a density of 0.712 and is standing on one of its ends. It has a diameter of 66cm and its height is 1.98m. The plate it is rolled from is 1.2mm thick and has an E=200GPa. It also has an ultimate strength of 510MPa. Homework Equations...

A one liter cylinder is filled with 0.1 mm steel beads and the void volume is measured. A one liter cylinder is filled with 1 mm steel beads and the void volume is measured. A one liter cylinder is filled with 10 mm steel beads and the void volume is measured. Which bead size has the greatest...

Is there any way I can find out the properties [without having access to the beam itself] of the ASTM A997 beam without subscribing to ASTM? Specifically what I am interested in is the weight per foot. Thanks in advance for any help.

a steel bar 1 " sauare 6 ' long is to be used as a column.ends are free to rotate put may not be displaced stress is limited to 30,000 psi. i believe my teacher expect conform code AISC.

Homework Statement A steel wire in a piano has a length of 56.8 cm and a mass of 5.0 g. To what tension must this wire be stretched in order that the fundamental vibration correspond to the note of middle C (f = 261.6 Hz)? Homework Equations u*(f2L)^2 = F The Attempt at a...