Steel Definition and 802 Threads

Hello, I just registered to these forums but already visited this place for a while. I have a question that fits this particular subforum (I hope). It is related to another hobby of mine, which is knife collecting/making. Let me give you first some background info on the subject, in order to...

I was wondering exactly how yield and tensile strength increases with increasing levels of strain rate for a typical steel grade? I understand dislocations are generated during straining (work hardening), but what happens at higher strain rates which increases the strength?

Anybody know a site where one can find an overview over different kinds of steel and their specifications, such as that St50-2 is actually the same steel as E295. A "handy" site where this type of info can be found...

A steel plate of 10 cm square or (100 sq cm) is .25cm thick. How much force is need to distort its edges by 0.04 cm. sheer modulus for steel is 80 * 10^9 n/m^2, Plz Help Thanx

How does one work just out of interest? I use it when loading a steel beam to see the strain induced in the web of a chanel section. can't figure out how it would work

A question I have is more a curiosity. We have skyscrapers and tall buildings made of steel, but why is it whenever I go look at some housing projects and developments, those houses are built with wood frames? Right away I think of cost which is probably the most obvious answer, but I am not...

I have a problem that I need to solve that is quite extensive it boils down to this. I have a steel vat that's been plated with zinc and its being used to store sulfuric acid. I have to find corrosion rates, heat transfer and thermal stresses, elastic and plastic deformation problems, hydrogen...

Hey People...um this is a question i got for school...i know what was used to solve it but i can't understand how that method was used and why they did that... it says: A foundry operator finds that it takes 55.3MJ of heat to heat a 286 kg mass of an alloy steel from 22 degrees C to 452...

Hi all, i'm trying to figure out the difference between iron and stainless steel. Other than maybe the appearance, that's all i can say. I can't find any links or any relevant chapters in my textbook. In the back of my mind i think the main difference is the bonding but I'm not sure. Can...

a) what is the diameter of a steel wire 18m long that elongates 9mm when a load of 380kg is hung on its end? b) if the elastic limit is 3.00E8 N/m^2, does permanent deformtion occur? a. \Delta L=FL/YA 9E-3m=\frac{3724N*18m}{20E10N/m^2*A} A=3.724E-5m^2 diameter=6.8859mm b. stress=F/A...

A 14.2m long steel beam is accidentally dropped by a construction crane from a height of 9.53m. The horizontal component of the EArth's magnetic field over the region is 16.4 uT. What is the induced Emf in the beam just before impact with the earth, assuming its long dimension remains in a...

Hi, I need to work out the bending moment of a steel tube, 25mm diameter (3mm thick) 410mm long. im assuming i have to use youngs modulus in some way? what's the correct formula for working out when it will bend? thanks chris

Hi, I need to work out the bending moment of a steel tube, 25mm diameter (3mm thick) 410mm long. im assuming i have to use youngs modulus in some way? what's the correct formula for working out when it will bend? thanks chris

shining steel rims and metal tines the beast, constructed in air, spinning piecewise with the trail of two snakes clickatickaclickaticka wum wum wum

Hello, I am currently studying A-level physics over here in the UK. I now have the task of preparing a 15 minuite interactive speach which counts towards my final mark. My choosen element for this speach is Steel. I have searched the internet and looked in books but I am finding it very...

Do you want low carbon steel to withstand earthquakes? Low carbon means more ductile, right? Am I right?

I'have searched a lot but could not find boiling point for steel. Can you tell me what's the boiling point of steel? Also any link for a table which provides both melting and boiling points for commonly used metals would be greatly appreciated. Here is what I found so far: Melting Point: The...

The equatorial radius of the Earth is about 6370km. Consider a 40,000 km long steel pipe that forms a giant ring that fits snugly around the equator of the earth. Suppose the temp. of the pipe is increases 1 degree C. The pipe gets longer. it is also no longer snug. How high does the pipe stand...

In a table of different steel qualities the information about a perticular type of steel can be as follows: Steel type: S235 Tension/Pressure: 0\pm60 130\pm130 Bending: 0\pm190 150\pm150 My question is, what do these values tell me? The values are in N/mm^2

I was wondering if anybody knew the type of steel that is used for the tube structure of steel rollercoasters and also its youngs modulus. I also need to know the youngs modulus for the polyurethane wheels they run on. I need this informattion for a new science project and have looked everywhere...

A steel ball has a mass of 4 kg and rolls along a smooth level surface at 62 m/s. a) Find its kinetic energy ( i found this.. ) b) At first, the ball was at rest on the surface. A constant force acted on it through a distance of 22 m to give it the speed of 62 m/s. What was the magnitude...

The bottom of a steel "boat" is a 6.00 m x 9.00 m x 5.00 cm piece of steel(density of steel = 7900 kg/m^3) . The sides are made of 0.460 cm-thick steel. what minimum height must the sides have for this boat to float in perfectly calm water? in cm i have that F_B (buoyancy force) is equal...

i need urgent help can anyone suggest some link that clearly states the physical property needed for a stainless steel knife? i desperately need it today. thz any help will be GREATLY appreciated

Alright, these two problems are driving me nuts: 1. ---To verify her suspicion that a rock specimen is hollow, a geologist weighs the specimen in air and in water. She finds that the specimen weighs twice as much in air as it does in water. The solid part of the specimen has a density of...

is tempering the correct heat treatment for automotive panel? coz I've seen different version of heat treatment.. some books said tempering, website said (key to steel) said case processing/ annealing (seldom quenching and tempering), actually which one is correct? actually i'd prefer...

Based on contraction and expansion due to heat and cold, have I assumed the correct answer with a sample equation to the question below. For the highest accuracy, would you choose an aluminum or a steel tape rule for year-round outdoor use? Why? “Aluminum” – The heat “Q” that must be...

can anyone explain the shock absorbing ability of steel? thank you

I'm having problems with what equation to use for this question: A 1000 kg steel beam is supported by two ropes. Each rope has a maximum sustained tension of 6000N. Does either rope break?

I've been trying to figure this out forever A 500g steel block rotates on a steel table while attached to a 2.0 meter long massless rod. compressed air is fed through the rod is ejected from a nozzle on the back of the block, exerting a force of 3.5N. The nozzle is 70 degrees from the radial...

Ok so I'm guessing my TA made up this problem on his own so I don't know how to start, considering there are no numbers and lol I just love having numbers to work with. Anyways here goes again lol I tried all weekend to get the solution and it's not working. Got help a week ago from this board...

Ok so I'm guessing my TA made up this problem on his own so I don't know how to start, considering there are no numbers and lol I just love having numbers to work with. Anyways here goes. A tablecloth covers a horizontal table and a steel ball lies on top of it. The tablecloth is pulled from...

I'm doing a science experiment on how the coating of steel wool affects its rusting rate. I'm doing the background information right now. What I need help with is how to make sense of the chemical reaction of rust. Can someone give me examples of these things so it makes sense?? Corrosion is...

If you increase the dimensions of a bridge by 5, how much is its strength increases? How much is its weight increased? Any help is appreciated. Thanks

if you dropped a steel marble onto a steel plate and then dropped a steel marble onto a glass plate which would you expect to bounce higher?

which collision of marbles is more elastic, steel on steel or steel on glass?

We are about to have an election here in Australia sometime shortly, in October, and the current Prime Minister, the incumbent John Howard (a.k.a Man of Steel), has adopted the slogan 'Keeping interest rates low'. Are high interest rates a wholly bad thing, or are there upsides to having high...

Hello again, I'm stuck on a new problem. Again, I thought I had the correct equation but apparently not as my answer is not correct. Here's the problem: A steel I-beam has a weight of 9.10 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends...

What is the difference between HY 80 and HLES 80 steel?

Having just read the thread https://www.physicsforums.com/showthread.php?t=39069 I have a question regarding somethinf mentioned there. It's been quite some time since I found a copy of Jared Diamond's Guns, Germs, & Steel. Way back when, I began reading it, and was astounded by the many...

A uniform steel cable of weight mg is suspended between two equal elevation points. Determine the tension in the cable (a) at its lowest point, and (b) the points of attachment. Judging from the problem, it seems that the tension in (a) and (b) is different. Is this necessarily so? If it is...

1) A 2.0 kg steel ball rolling at 5.0 m/s [W] strikes a second steel ball of equal mass at rest. After a the collison, the first ball is deflected [N35W] at 3.0 m/s. Determine the velocity (and direction) of the second ball. (the answer in the back of the book is 4.1 m/s [s37w], but i got...

A 5.56m long steel beam is accidentally dropped by a construction crane from a height of 3.97m. The horizontal component of the Earth's magnetic field over the region is 28.4e-6T. Acceleration of gravity is 9.8 m/s^2. What is the induced emf in the beam just before impact with the Earth...

Gosh, I can't stand the new look. Q. Place a 1 kg block of iron at 40 degrees C into a kg of water at 20 degrees C and the final temp will be: More than 30 degrees C, Less than 30 degrees C, At or Around 30 degrees C. I felt it would be At or Around 30 degrees C, because I tried to do an...

I'm still a little confused about crystals and grains. Does a crystal become a grain as the metal solidifies? I'm also not clear on molecules. For instance with a body centered lattice you have nine atoms. One on each corner and one in the center of the body. So within that lattice -- what...

How to melt Steel with Electricity? The question boils down to concentrating heat. You can force heat into a crucible with heat from resistive coils. Or you can zap the right material in a microwave and it will heat up. (Examples have found use graphite, magnetite, and silcon...

Here is the problem: A steel wire of a radius of 6E-4 is stretched between two concrete blocks. When the concrete and the steel are at 65degreesC the steel has a tension of 100N. what is the tension of the steel at 200degreesC? I started the problem with using youngs modulus of: Stress...

I am considering getting into forging metal things at home as a hobby. Setting up a little smithy in the back. I thought I'd try making some blades and such. What are the properties of iron/steel as it cools? At what rate should it be cooled for different hardness or durability? What...

In addition to the question in https://www.physicsforums.com/showthread.php?s=&threadid=12538 I have a few other queries related to combat. I've read that the it requires about 900-950 Newtons to shear an average iron nail. I'm wondering how much would be required to slash through chain or...

would like to know several things; 1. what exactly is the stuff that i keep reading about called "cementite", and what does it do to steel on an atomic scale to make it harder and more brittle? 2. how does heat-treating and quenching (ie. heating a steel blade, let's say, and then...

Hallo erstmal. I would like to know how nitriding steel works, how it hardens steel, whether it makes it more brittle and basically everything else that is interesting about it. also, I was wondering whether carbon migration has a similar effect, and whether the carbon forms a compound...