Steel Definition and 840 Threads

Homework Statement A steel cylinder of diameter 8cm and length 12cm is initially at 600°C. It is placed in oil at 20°C for rapid cooling, for case hardening of the surface layer. The value of h is 60W/m2 K. Use the numerical method. a. Determine the time in which the maximum internal...

Hi, This question came up after some stainless steel samples were exposed to high temperatures (metal flame holders in a combustion chamber). Some of them had areas with rainbow colors. What exactly happens to the steel that causes these local rainbows? If the colors in point A and B on the...

I am trying to estimate the damping ratio of steel in bending. I have a situation where I need to know the dynamic response of an inverted pendulum. A picture is worth a thousand words, so here you go: The vibration will be free; it is caused be the initial position of the system. I can...

A 1.80-m long round steel wire with a cross-sectional diameter of 0.80 mm is placed over a light frictionless pulley, with one end of the wire connected to a 23.0-kg mass and the other end connected to a 14.0-kg mass. By how much does the wire stretch when the masses are in motion? S= F/A e=...

I am using an 8" steel plate as a beam that will undergo moment forces and deflections. I am not sure how to calculate the maximum moment capacity of a plate like this. I think that the deflection would = Fb*L^3/(48*E*I). Does this look correct? I know how to calculate the max moment in the...

what is the best heat treatment for mild steel which will produce hardest result when tested in laboratory

Homework Statement In general, the density of a three dimensional object is expressed as mass per unit volume. However where an object is of uniform thickness its depth can be combined with the density factor allowing the density to be expressed in terms of mass per unit area. A pair of...

What I need is a 1"x.5" rectangular tube .065" wall and 84" long steel tube that will have the least or very low deflection. I have been trying to educate myself today on the different grades of SS which would be preferable for rust resistance. If I understand things correctly 304 SS is the...

Any help is appreciated, I'm really just trying to figure out if it can withstand 300 meters but it would be useful to see how/if a max depth can be calculated. diameter: 20M steel density: 7850 kg/m^3 weight: 250,000 kg shell thickness: 2.54 cm density of water: 1027 kg/m^3 How much...

I am looking for a paragraph on each metal on the comparison of aluminium and stainless steel under the heading: Manufacturing Methods: What processes are available to turn the raw material into products and how do the processing methods differ? Regards, Lockyphysics

I am a chemical engineer, not a physicist, so I am a bit rusty on my electromagnetics. I need to set up a fluctuating magnetic field inside of a stainless steel tube (hopefully using a pair of electromagnets outside the tube), and I am wondering if the field will penentrate through the tube...

I have a steel block (2.75m x 1.6m x 0.5m) sat at 1000°C in ambient air (22°C) How long will it take for a surface to drop to say 800°C should i use the heat transfer eq: Q=KA\DeltaT to find the power in joules per second, then transpose to find seconds somehow? Any help will be...

Homework Statement Find the final velocity of a 5g steel ball bearing being pulled by a neodymium magnet with a pull force of 6.1 pounds (27.1 Newtons) in a straight line on a frictionless surface after being pulled for .1 meters Homework Equations F=MA The Attempt at a Solution f=ma...

Homework Statement From this video: http://www.youtube.com/watch?feature=player_detailpage&v=mdZo_keUoEs#t=77s it shows that the steel rod will eventually stay in the middle of the solenoid. At first the magnetic field of the solenoid would look like...

Hello, For my Mechanical Engineering project, I'm working on a wind tower. One of the specifications we have to respect is a 50 years resistance to sunlight. We've chosen inox steel as the primary material (after calculating the various constraints due to the wind the the rotor up on the...

Homework Statement I meet a problem below: To check if the angle :200x150x12 S275 Grade can take a twist of 30kNm (on plan ) with Span 3m fixed end connected. Homework Equations θ = T L / J G The Attempt at a Solution My question is that even I got the angle of twist for this...

Hi I'm a high school student and need help with the calculations for a bike design. I am required for the design to use 1.5" mild steel square tubing at 1/16" thick for it. I need to know what the strength of the tubing is before i can make or tweak the design. Can anyone help with my predicament?

I am trying to do a problem on Material Non-linearity , to model steel for large deformation , beyond yield point , I have tensile testing data for the steel ( in form of Engineering stress vs Engineering strain). for defining the model , I chose Multilinear Isotropic hardening now there...

Homework Statement We have a steel rod with density ρ = 7,90 kg/m^3. When it's horizontally on the floor, it's length is L = 6,00m. The rods surface area A is a circle with radius r=0,04m. Steel has Young modulus E=2,1 \cdot 10^{11} Now the rod is lifted up so it's vertically straight...

Tata Steel sheds 580 jobs in Wales, with several sites to close.. This doesn't sound too well: Is this the tip of the iceberg?

is there any acid or base or any other chemical which can dissolve carbon particles or tar but will not effect alloys like steel.

I'm trying to build a vacuum chamber for chemistry purposes. This isn't exactly for school, but it's something I'm doing for fun and it's close enough to a school problem. Anyway, my vacuum chamber will be a prism 24" wide, 18" deep, and 18" in height. It will also have a 8"x6" Plexiglas window...

not sure if I am in the right place or not but nevertheless need some help I am trying to figure the correct steel to use for sign support. I am trying to determine if a 5 x 5 inch with .25 wall is as strong or stronger than a 6 x inch tube with a 3/16 wall. Can't find any formulas to help...

I am currently working on a project to determine how much weight a mild steel shelving units can support. This is a project for a friend and for my own interest. I am having trouble deciding exactly what is necessary to determine the weight the shelving units will hold. Each shelf on the unit...

Homework Statement QUESTION 2 (Total 20 marks) Figure 4 below shows a diagrammatic section of the floor of a typical house suspended over a garage. The steel beam shown in section spans 7.2 metres centre to centre of supports. The floor, including an allowance for the self weight of...

I heard a rumor from some people at a scrap yard that it's impossible to sepperate copper from stainless steel, and that the copper ruins the stainless steels structual integrety. Is there any truth to this?

This is my problem: I need to design a pipeline distribution system for steam service. But is thought in order to inject high P, high T steam into oil wells (upstream industry). Inlet conditions into the pipeline will be 650 ºF, 1900 psi. Pipes are several km long, and, because it is a network...

I'm designing a patio which is connected to a house on one side, 8m x 2.4m 150 x 50 x 3mm steel tubing around the outside with 140 x 50 hardwood purlins, spaced at 1m intervals (2.4m long each). I would like to span the 8m with only posts on the ends. Is this possible or will there be to...

Hey guys, First off, I apologize if this is in the wrong section. I am currently an intern taking 6 months off from my senior year pursuing a mechanical engineering degree. Having not taken a heat transfer class yet, I am stumped as to how to go about tackling my latest project. Basically...

Where can I find the yield strength for AISI 1566 Carbon Steel? I tried googling it but I can't find a reliable value.

Why does aluminum "leech" into a water bottle, but stainless steel does not? My professor was saying that using aluminum water bottles will result in a small amount of aluminum ions dispersing into the water. Stainless steel, however, does not have this problem. Is this true? Why? I'm...

One can show that mass diffusion without chemical reactions obeys the same basic equation as heat conduction. The one dimensional equation in dimensionless variables is given by $$ D_{AB}\frac{\partial^2 C_A}{\partial x^2} = \frac{\partial C_A}{\partial t} $$ where C_A is the concentration...

hello, i am trying to calculate thermal stress on sphere, considering chage in temperature causes chage in volume of the sphere so needed volumatric expansion coefficient of steel; i have a data about mean coefficient of thermal expansion for 316ss..is there any way to calculate volumetric...

We have a design of stainless steel pipe with a bend radius of 1.5 The OD of the pipe is 47mm and the wall thickness is 3mm. Can anyone tell me if this is possible please? I am pretty sure the SS is austenitic. I thought that as a rule the minimum radius was 2. Thank you

Hi everyone, I have a part that's made of A2 Tool Steel (unknown HRC). It needs to be able to withstand a bending force, stress of approx. 700 MPa, without plastically deforming. Is there a method to heat treat it to be able to withstand that stress? TIA...

I'm doing some work on my house at the moment, and have had a design produced by a structural engineer for a steel I-beam to span a newly made (4 meter) opening in a brick wall. They've given me a design (see the attached picture for my interpretation) for the bearing of the I-beam which I...

I'm using the basic deflection equation to determine how thick a plate of steel would have to be to support a load of approximately 1300 N in a 3 point bend, with surface dimensions of of 420 x 630 mm. I = bh3/12; δ = FL3/(C1EI); Esteel = 200 GPa = 200 N/mm; δ = 50 mm (arbitrary); h3 =...

[b]1. A covered steel tank (unit weight=80kN/m^3) 15m in diameter x 10m high and with 20mm wall thickness is filled with liquid (unit weight=9 kN/m^3) up to a height of 9.9m. The tank sits on a concrete (unit weight=25kN/m^3) foundation. 15m in diameter x 0.6m thick. The foundation rests on the...

I am doing a simple steel ball drop test on glass to see if the glass passes the standards. We are dropping 1.18 inches (0.535kg) steel ball at the height of 51inches (1.295m). Now, I can calculate final velocity at the impact, but cannot calculate the actual impact force. One of the method...

Hi If I was to heat a steel rod that is brittle...then clamp it at both ends and allow it to cool to a certain lower temperature at which it breaks, how would I go about calculating the breaking stress of the steel. [ I know value of E and alpha] Thanks for any help you supply.

Homework Statement I have to list out some ways on how to determine the manganese content of a steel sample. The Attempt at a Solution I can only think of one right now, which is calorimetry...but I was wondering are there other simpler possible ways of determining it?

dear friends i have an application for pumping system it consists of 3 parallel pumps having a max head of 8 bars i have a stainless steel pipe has 8" diameter and sch 10 will this be suitable to be used under this pressure ?

1. 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. 2. Homework Equations impulse J = F*dt J = P2 - P1 K0...

I want to use a length of steel pipe as a communication medium. The pipe is about 20 feet long and the idea is to send some sort of signal along it that can be detected at the far end. I've had various ideas including using acoustic signals, or using the steel as an electrical conductor but I...

Hi! We are going to machine some stainless steel parts that will require hardening afterwards. The parts are going to be hardened in an oven at 600 degrees celcius for 4 hours and then air cooled. This procedure is given in the suppliers data sheet. Because I'm new in the game of...

A solid steel shaft is subjected to a torque of 45 KN/m. If the angle of twist is 0.5 degree per meter length of the shaft and the shear stress is not exceed 90 MN/m^2 (I) find the suitable diameter of the shaft . Take C = 80 GN/m^2 (II) Maximum shear strain we can solve the question by...

I need some help determining if a bar with increased length and loads is going to bend. The original length and loads were 1018 steel, 1 3/8 dia, 7.8" long with 480 lbs at one end and being supported with bearings at 2 locations 4.68" and 7.8" away. The new configuration is 1018 steel, 1 3/8...

Hello everyone! Chemistry is my hobby and I want to try a new method of synthesizing some compounds. It requires a use of a pipe bomb filled up to 3/4 of it's volume with an aqueous solution of reagents and heated to about 300 C. I'm a bit scared thou. Can a 1" steel pipe, about 2mm thick and...

Homework Statement What Force must be applied to a steel bar, 1in [25.4mm] square and 2ft [610mm] long, to produce an elongation of .016in. [.4064mm]? Homework Equations L=610mm ΔL=.4064mm E=29,000,000 The Attempt at a Solution What I know is: E=Stress/Strain...

Looking to understand Fatigue calculations for stainless steel seamless tubing Problem: Material: 304 Stainless Steel tubing (.375 OD, .072 wall) per ASTM specifications used at 158F degrees maximum Ambient UTS 515 MPa, YTS 205 MPA, temperature de-rated per MIL-HDBK-5J to UTS 473.8 MPa, YTS...