Steel Definition and 802 Threads

Would it be possible for a reasonably built human to abrade through hardened steel if he had a blade made out of diamond? Or is human muscle power insufficient to break the chemical bonds?

Hi all, I am looking for US steel manufacturers/fabricators for fabrication of heavy equipment. Typically 200-2000kgs per weldment. 5-50mm mild steel. 2-10 pieces per order. Machines needed: large bending press. horizontal milling machine. CNC drill. Thanks. Huntoon

Hi, I have been given the following questions to answer: write a report on the following: - the process by which plain carbon steel is produced - the process by which alloy steels are produced - the process by which aluminium is produced Now I am not entirely sure how to answer this and...

Hi: I have a tank of water (of plastic) of about 2 x 4 feet. I want a steal rod (with a ball of 5 inch at end of rod) to be cross that water tank from center, but water should not leak from tank (rod will enter from right and exit from left of tank) You can get more idea from image that...

I often hear about collisions in terms of impact force. For instance, "the boxer delivered a punch with 100 lbs of force." I have a pair of steel toed shoes that are rated to withstand 70 lbs of force (311 N). But if the shoe experiences an impact instead of being loaded very gradually, wouldn't...

I am currently installing some sail shades in my back yard. The manufacturer is callin for 6" tube steel supports but I believe that 4" tube steel filled and compacted with concrete will provide more strength and resistance to buckling. Obviously I am concerned about price but want to do a great...

Can anyone Help? "impacting concrete with steel projectile" Dear all gentlemen , Can anyone help me ? I'am doing my thesis in civil engineering in studying and mixing statistics with civil engineering with topic of " impacting concrete with steel projectile " if we consider the...

what is semi killed and fully killed steel.

http://img268.imageshack.us/img268/4821/98922663.jpg Uploaded with ImageShack.us Effective length: x-x axis = 1 x 6500mm y-y axis = 1 x 5000mm do i have the right effective length?

Hi, What is the strongest steel? I did a quick search and found this steel with ultimate tensile strength over 5 GPa. Is it possible or just a mistake because at much lower per weight than that, titanium is used in aerospace industry, while this steel application seems consist nothing...

I want to drill a 3/8" hole in one side (not through) of a steel tube, 1-3/16" OD 1/16" wall tube in order to run cables through it. The tube is my son's go kart frame so I want to make sure it is safe to drill a hole into it. I'd appreciate any comments.

Hi, To simplify the explanation of my problem, imagine that I have in my hand a rectangular steel piece of 1.5mm thickness with a hole of 2mm diameter. In the other hand I have a small tubular steel piece 10mm length x 2mm diameter. I have to put this tubular piece into the rectangular...

What happens? I think nothing should happen since the rods will not get magnetised at all due to the ac current.. Thanks for the help!

Homework Statement A steel ball of mass m falls from a height h onto a scale calibrated in Newtons. The ball rebounds repeatedly to nearly the same height h. The scale is sluggish in its response to the intermittent collisions and displays an average force Favg, such that FavgT = FΔt, where...

1. Homework Statement Compute angle of twist of one end relative to other if a torque of 850 lb-in is applied uniformly along the length. Shaft has two flats (not just the 1 pictured!) 1.25 " is measurement across flats. Homework Equations J = C r^4 The Attempt at a Solution I had...

Name of the steel alloy?!? Hi, can someone please tell me how can I find out the name of an alloy if I have its composition? Here are the percentages of each element inside: Composition in % (min ;max) C ( - ; 0.05) Si...

Homework Statement You have been assigned to design brass pistons to slide inside steel cylinders. The engines in which these pistons will be used will operate between 20.0 degrees Celsius and 150.0 degrees Celsius. Assume that the coefficients of expansion are constant over this temperature...

My son brought home a fourth-grade science experiment a few days ago: He was to make some sort of property change in a steel nail. He had decided that he wanted to make it rust, so we set about creating an electrolyte solution out of salt and water and leaving it in there. There wasn't...

I am just not too sure how to start this equation. The answer was given (i.e. Vc = 3698 cm^3), but I just need to know the steps on how to get to the answer. A sand core used to form the internal surfaces of a steel casting experiences a buoyancy force of 225.63 N. What is the volume of the...

I am a lisc. Auto body tech, and I have a customer who wants a Carbon Fiber roof on a Volkwagen bug, I can fabricate a inner frame, and bonding will not be an issue, (according to paint rep) The hard part is I want to do a flush seem and have paint blend into carbon fiber. I will "butt" match...

Hey all, I am designing a cup holder. It is supposed to be made out of a few steel rings. Its geometry is such that the hoops can open (so the radius increases), and you place the cup inside. Then, as the hoops spring back, they press upon the cup and the friction holds it in place as you lift...

Homework Statement [See Attachment] Given: Thickness, load, G Find:γ and horizontal displacement. Homework Equations τ=γG Angle change should be the shear strain. The Attempt at a Solution I tried plugging 800 into tau and the given value of G to get γ, but that isn't...

A steel rod of 0.10kg rests on two metal rails inclined at an angle of 30 degrees. There is a magnetic field of 0.50T on the incline and a current of 70A flowing across the bar. Find the acceleration of the bar. The bar is 0.12m wide** The attempt at a solution What I have so far is a diagram...

Someone told me that an arrow shot from a compound bow can go through a reinforced steel door. I just want to find out how true that is. How far can an arrow shot by an athlete with a modern bow specially prepared for them shoot through steel? Also, how far can they shoot through wood, or rock?

If a 1 inch diameter steel ball bearing is at rest on a frictionless surface, what slope would be required of the surface for the ball bearing to initiate movement?

I am reading through some calculations in a book that refer to an average shear modulus of steel (19700)... they give no units and it has completely thrown me off track while following through the calcs can anybody help? I know the unit is imperial and if i convert some of the other units...

Hardhats are tested by dropping a 3.63 kg steel ball (free fall) from a height of 1.52 m and allowing it to impact the top of the hardhat. Hardhats are impacted with an impact velocity of 5.5 mps. The hardhats are supported at four locations where they are connected to a circular band that...

Homework Statement An angler hangs a 4.50-kg fish from a vertical steel wire and 5*10^-3 cm^2 in cross-section area. The upper end of the wire is securely fastened to a support. a) Calculate the amount the wire is stretched by the hanging fish. The angler now applies a force F to the fish...

Appreciate any comments regarding the following:-(I am not an Engineer) We intend to launch (Mekong River) the subject steel tube (12mtr pipe welded together using the collar sleeve method) Flanges / gasket will be fitted at both ends of the tube. The flanges will have a 1" valve at the top and...

Hi, I was wondering if anone knew what an internal CD or DVD drive case is most commonly made of. I was hoping to use it to do some welding so am hoping it is steet but not sure. Cheers

If you heat inox steel in presence of air, up to a specific temperature, you get a yellow colour of the metal surface; increasing the temperature it becomes red; still increasing, blue. Is it due to the formation of oxide layers of different thickness? Which effect is responsible of the colour?

Steel Joists: Moment of Inertia? I thought it might well be worth while asking here, as the Forum is awash with knowledge about most things. I am planning to do a loft conversion and I need to know about the strength of steel beams (Universal Joists, in fact). I keep seeing the expression...

i don't know if i am in right part of forum. i want to build some sort of wind turbine for a school project. all the diy project are 6 or 9 coils with 8 or 12 magnets. the coils are on non magnetic board and the magnets on steel plate. why on steel, the steel plate increase the total...

"Whiskey Stones" - ice, stone, steel: which is best?? The conundrum: I'd like to purchase the most effective cooling item for my evening dram of scotch, or Manhattan bourbon, or Black Label, or... Where was I? Seriously, I am intrigued by the growing popularity of "whiskey rocks" - an item to...

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 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...

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...