Steel Definition and 840 Threads

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 have a tandem bicycle with a 1" headtube. I'd like to use a 1 1/8" fork with it. The ID of the tube of 30.1 mm. The OD of a 1 1/8" steer tube (the part of the fork that passes through the headtube) is 28.6 mm. 30.1-28.6=1.5 mm of diameter for the headset cup (the part of the headset in which...

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...

Greetings, I've been trying to teach myself about magnetic phenomena and I've recently been tinkering with a finite element package called quickfield (from quickfield.com). I made a model of a simple permanent magnet with one of the magnet's poles facing a steel bar. The software has a...

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...

Homework Statement this is a design course project, and I am trying to replicate a music box but with my own choice of music. the concept is the same, a steel comb, being plucked at by protrusions from a rotating cylinder. ok, so the vibrations of each comb tooth are related to the length of...

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...

This should be a pretty simple question for someone out there, If you have a ramp with the same height, and the same angle, and you take two spheres of different size, but identical materials, and you rolled them down this incline. Which would reach the bottom first if rolling friction is...

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...

Homework Statement I have a steel angle (40 x 40 x 5mm) which is welded to box section either side it is 1000mm in lenght. It will have have load of 45kg on it (point load). I need to find the maximum deflection of this beam, which i think will come under a fixed-fixed type beam...

Homework Statement A uniform piece of sheet steel is shaped as pictured. compute the x and y coordinates of the center of mass of the piece https://tdsal.homeserver.com/photos/photos%20hosted%20on%20internet/q6%20.jpg Homework Equations cm = sum of all of the masses multiplied by...

Hi there, I've got an assignment due today and as usual have left finishing it off until the last minute. I've completed most of it but I thought I'd try and get an opinion on something. Homework Statement Basically our teacher has asked us for a very simple steel frame (beam, column...

I need to calculate whether a steel pipe above the ground, 1500mm OD and 6mm wall thickness, will fail under a vacuum of 3000 Pa. How would I go about doing this?

Yes, first to say that this's really a basic matter but I've found all around a week & still facing difficulty, hope someone has patient to help me an answer then i can go further myself :wink: As in the attached picture, a few ones have done their calculations & showed the different wall...

Hi guys. Which one has more impact toughness: GFRP or Steel??

I'm a little confused and i would appreciate if someone could enlighten me on how there are some claims of certain manufacturers that the strength or load bearing capacities of aluminum I beams can surpass steel I beams? is that false advertising or can that statement ring true? Please help.

Hey there, I am going to by building a chassis and i am wanting to find out if 33.7mm dia X 4mm thickness circular hollow section or 40mm X 40mm X 2.5mm Square Hollow Section is stronger these two weight around the same per meter thanks Ian

Hi. I have started to do this question (the question it's self is attached with it's relevant diagrams) but I am coming up with a too large a maximum design load, the value I am looking for isn't on the tables I have so I must have made a calculation error somewhere. Any help would be much...

Homework Statement Select a suitable steel rope to suspend a lift from a winch. The weight of the lift is variable as is the weight and diameter of the ropes the lift is suspended from. As an example, I'll use 13mm for the ropes diameter and 0.63kg/m for the rope mass, the total length of the...

Hello, I'm seeking help with material selection for a high impact speed application. We are currently using HRC 54 S7 as both impactor and target. The impact velocity is near 50m/s and we find occasional brittle failure a serious issue. I'm wondering if anyone has suggestions as to an...

I'm building a giant set of monkey bars for a gym and I'm curious about the strength of material I plan to use.I'm going to use two 4x4 3/16 thick steel tubing that will run 20 feet long and sit on top of the same material at each end 9 feet high.I will brace the top corners at each end. I'm...

I have a practical question. I work in the radiography department of an industrial contractor and we've found some old recovery buckets used to recover the silver from old film fixer. Essentially you have a bucket of steel wool that the fixer (with silver precipitate) passes through, which...

Homework Statement The average coefficient of volume expansion for carbon tetrachloride is 5.81*10-4 (°C)-1. If a 49.0 gal steel container is filled completely with carbon tetrachloride when the temperature is 10.0°C, how much will spill over when the temperature rises to 27.0°C...

Homework Statement An object of mass .5 kg is hung from the end of a steel wire 2m in length and .5mm in diameter. The mass is lifted a distance h and then dropped (creating a 'jerk') What is the largest value of h if you don't want the wire to break? Ultimate Strength: 1.1E9 N/m^2 Young's...

The process of carburization works via the implantation of carbon atoms into the surface layers of a metal. As metals are made up of atoms bound tightly into a metallic crystalline lattice, the implanted carbon atoms force their way into the crystal structure. The carburization is produce...

Homework Statement "A round plug made of brass has a diameter of 87.53 mm at 20 C. The plug is to be fitted to a steel ring of inside diameter 87.43 mm. To what common temperature must they be brought in order to fit?" The linear coefficient of expansion for brass: \alpha_{b} = 18.7 \cdot...

Hi there How can steel structures be protected from 650 to 800 degree celsius temperatures? Can ceramic material be used to coat the steel sections? Will the ceramic material not keep the heat in and weaken the steel? Any help will be much appreciated

Homework Statement An oil having a density of 833 kg/m^3 and a viscosity of 3.3*10^-3 Pa.s is pumped from an open tank to a pressurized tank held at 345 kPa gage. The oil is pumped from an inlet at the side of the open tank through a line of commercial steel pipe having an inside diameter of...

Properties of Matter (Fluids) Why is it possible to float a wax-coated stainless steel needle on the surface of water?

Hello, I am looking for static and dynamic coefficients of friction for bronze on stainless steel (dry condition). Closest thing I could find was http://www.engineershandbook.com/Tables/frictioncoefficients.htm" where it only has steel on bronze under greasy condition. Can anyone help me...

Does anybody knows a standard way of determining the hight of 11 KV transmission line galvanised steel poles ?

Homework Statement Given the steel C1040. What do you mean by C, 10, and 40 in that steel? What is the common type of steel used in manufacturing LPG cylinder?

Is there a critical low temperature point that, if a sheet of mild steel were cooled to, it would become brittle enough to shatter with, say, the blow of a hammer? I am thinking of some sort of an art project here, not something illegal or fantastic such as the scene in MI 3 where they...

Exterior commercial frames (.053") embedded in a concrete wall 8" thick with 3" layers of polystryrene (3# density) on each side of concrete cavity. Frame rests on foam inside and outside of building. Frame is grouted solid with poured in place concrete. Is there an appreciable (to be...