Steel Definition and 802 Threads

I have a steel material that has a yield strength of 515 mpa and a tensile strength of 615 mpa at zero degrees. What i need to know is will the tensile strength and yield strength be higher than 293 mpa at 80 degrees. The steel is ahigh tensile grade steel from china (Q390C).

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A friend of mine told me this; you take a metal pole or rod and hold on to one end while warming up the other until it's red hot. Then you stick the warm end into cold water. One would expect it to cool down, and it does, but what happens is the end you're holding on to very quickly gets so hot...

Homework Statement A steel ball of mass 73g is held above a horizontal steel plate, as illustrated in the figure below. http://img59.imageshack.us/img59/3917/physicsp24bqd3.png The ball is dropped from rest and it bounces on the plate, reaching a height h. (a) Calculate the speed of ball as...

[SOLVED] Thermal Stress and a Duel rod of Steel and Al. Homework Statement A steel rod 0.350 m long and an aluminum rod 0.250 m long, both with the same diameter, are placed end to end between rigid supports with no initial stress in the rods. The temperature of the rods is now raised by...

Homework Statement A 3.00 kg stell ball strikes a wall with a speed of 9.0m/s at an angle of 60° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for .200 s, what is the average force exerted by the wall on the ball? Homework...

[SOLVED] "Assortment of Structural Steel Beams"&amp Hi, Dose anybody know the solution for this problem? Please, help. Thanks, A Japanese industrial firm, Itsa Steel Company, manufactures structural beams of a standard length. The strength of a beam...

Hullo, I'm new here, so I'm not really sure where to post, but i supposed my question would come under physical chemistry. I am writing an essay on separation techniques in the oil industry, and I came across this machine...

Application: Aluminum gooseneck horse trailer incorporates (2) 6 foot long 8 x 2.25 x .25 6062 aluminum C channel beams (sitting long side vertical) from each of the front corners of the box, coming to a point (forming a triangle with the front edge of the box) where they are welded together and...

Homework Statement a thick walled tube of stainless steel, ks=19W/m.K, with a 2cm internal diameter and a 4cm outer diameter is covered with a 3cm thick layer of insulation. If the inside and outside wall temperatures are 600C and 100C respectively and the thermal conductivity of the...

Hi, I have been looking and searching for a place to find the costs for 1) Electric Resistance Welded (ERW) Mild Steel: AISI 1010 Steel 2) Drawn Over Mandrel (DOM) Mild Steel: AISI 1026 Steel 3) Chrome-Molybdenum (Chromoly) Steel: AISI 4130 Steel 4) Titanium: 38-644 UNS R58640 Titanium Alloy...

I'm having problem knowing how to work out this question, can anyone point me in the correct direction. Question 14mm diameter steel rod carries a load of 3.08kN in tension. calculate the stress.? I ended up with this: Stress = Force/Area. Stress = 3.08/154 = Answer = 0.02N/mm² if...

I have a bet that no chemical can cut through hardened steel like in the movies, will i loose?

Homework Statement A 10g steel marble is spun so that it rolls at 150rpm around the inside of a vertically oriented steel tube. The tube is 12 cm in diameter. Assume that the rolling friction is small enough for the marble to maintain 150 rpm for several seconds. During this time, will the...

[SOLVED] Buoyant force on a steel boat The bottom of a steel "boat" is a 7.00 m \times 10.0 m \times 4.00 cm piece of steel ( \rho _{{\rm steel}}=7900\;{\rm kg}/{\rm m}^{3}). The sides are made of 0.550 cm-thick steel. What minimum height must the sides have for this boat to float in...

[SOLVED] 10m Steel Wire Length/ +20 Degrees C Homework Statement 10.00-m long steel wire supports a pendulum bob at its end. How many millimeters longer is the wire when the temperature increase by 20.0 C Homework Equations (Delta)L = La(Delta)T or Change in Length = Length * linear...

A question has been puzzling me: why does a steel specimen feel warmer after it is fractured via applied tensile stress?

[SOLVED] Projectile Problem A small steel ball bearing with a mass of 16.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.33 m. Calculate the horizontal distance the ball would travel if the same spring were aimed...

Homework Statement Don't know how to calculate this. Not sure I care either, but I figured you people do care and know. I'm having a little dispute with someone about pounds per square inch of say an object moving at a high rate of speed on impact with say steel. So here is the scenerio. Let's...

i would like to find out the method to calculate loads on a rigging bridal, the situation, a weight needs to be hung at a point between two roof beams, so it is hung on two steel wire ropes from the beams of an suitable length to achieve the correct position, from this i would have all the...

My name is Gai Abraham, an automotive engineer trying to build a little LEV (low emission vehicle) I have contacted you previously and I wish to ask further help on the bending of steel tubes. Namely I have designed a chassis from bent steel tube, the technical sheet on S.S. astm 301...

http://asm.asminternational.org/ht-echarts/3046_OMM120707_figure.pdf

I am trying to repair my 1920s pier and beam house and have a situation where I need to slide under two butted beams on top of a post the thinnest steel I can that will support the two beams. What would help me determine this would be a general idea of how to compare the strength of a flat...

Homework Statement 1. A steel bar 375mm long is machined to give a diameter of 75mm for the first 175mm length, a diameter of 45mm for the next 100mm length and a diameter of 37mm for the final 100mm length. Determine: (i) The total extension of the bar when it’s subjected to an axial...

[SOLVED] Thermal physics problem Homework Statement A steel bar 10cm long is welded end-to-end to a copper bar 20cm long. Both bars are insulated perfectly along their sides. Each bar has a radius of 2.0cm. The free end of the steel bar is maintained at 100^{o}C and the free end of the copper...

Homework Statement A 4m long, 500 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70kg construction worker stands at the far end of the beam Homework Equations What is the magnitude of the torque about...

A 0.5kg steel block rotates on a steel table while attached to a 1.2meter long hollow tube. Compressed air fed through the tub and ejected from a nozzle on the back of the block exerts thrust force of 4.0N perpendicular to the tube. The maximum tension the tub can withstand without breaking is...

200g of steel was placed on a big block of ice. The ice was 0 degrees C. The metal was 150 degrees C. How much ice gets melted? My attempt: Q=mc(changeinT) Q=.2(460)150 Q=13800 Q=ML 13800=M(3.34x10^5) M=.041317 kg is melted Is this correct?

[SOLVED] collision problem Homework Statement Two identical steel balls, each of mass 3.4 kg, are suspended from strings of length 27 cm so that they touch when in their equilibrium position. We pull one of the balls back until its string makes an angle theta = 74o with the vertical and let it...

Distance traveled by an accelerating truck with a steel load. With a twist! Homework Statement Consider a large truck carrying a heavy load such as steel beams. A significant hazard for the driver is that the load may slide forward crushing the cab, if the truck stops suddenly in an...

I am currently getting setting up a project where we will be abrasive blasting 48" dia steel pipe in 80' lenghts utilizing robotic equipment producing 1600 CFM @ 160 PSI. We are endevouring to identify the CFM requirements for our dust collection system which will be required at one end of the...

Homework Statement please help i have just been introduced to shear stress and can do the basics i have just got a problem with this homework question and i am after some pointers as how to tackle it here's the question TWO STRIPS OF STEEL,100*2.5MM,ARE SPOT WELDED TOGETHER TO FORM A LAP...

Mini Cathodically-Protected steel plate... Hi guys/gals: I am doing a project on cathodic protection. If I have a steel and zinc plate, does bolting them together with nothing at the interface suffice as Cathodic Protection? It looks too simple to be true. So I need your help to validate the...

Anyone know of any glues or epoxies that would be able to bond steel to nylon fairly well? It should be able to withstand about 30-50lb of force, and the steel fastener is only about 8oz, so I don't need anything hardcore like 2ton epoxy, rather something that is simple and over the counter.

Greetings! This is for a Chilled water piping project (1000mm dia max). We are procuring pipes from SEAH Korea, from 250mm to 1000mm. And for calculations for support, load, thrust, etc, i need the following details for these pipes. 1. Coefficient of Linear Expansion 2. Longitudinal Elastic...

I was recently watching an episode of The View on youtube where they were talking about 9/11 conspiracys. Rosie (I hate that woman) proceeded to tell the audience that it is impossible for fire to melt steel and therefore there were other factors involved that made the towers collapse. I want to...

Ok so I have done the steel wool in vinegar, bleach, and water, but all I have is a soupy brown water and some steel wool which is 1/4 surface rust. And everything is soaked in chemicals. How do I remove the rust aside form waiting a month for the water to evaporate?

anyone know of a supplier of c.r low carbon steel ie. 1010, 1008, 1002 I can't find a supplier, any info would be appreciated, thanks

Hi, first post! I have a first year exam tomorrow, but I can't find any where which gives a good explanation of the Luders Band displayed in low carbon steel. Can anyone shed any light? Thanks

Hi all Looking for simple formulas to describe maximum acceleration of steel tubes when tubes are compressed and suddenly released when submerged in water (dont know if the water does anything else than supply buoyancy). Please, also feel free to comment freely on the topic and formulas...

A 11.8m long steel beam is accidentally dropped by a construction crane from a height of 8.62m. The horizontal component of the Earth's magnetic field over the region is 16.7μT. What is the induced emf in the beam just before impact with the Earth, assuming its long dimension remains in a...

I have weighed a cast iron brake disc and got an average reading of roughly 4kg, id like to know how a stainless steel disc would compare with this weight (just roughly) and also, if a ceramic plate was added to the iron disc...any help appreciated...thanks! H

I would like to know if there are any guides or tables that will allow you to convert 2x Douglas Fir joists to an equivalent rectangular steel tube.

Homework Statement Question: Standing Waves: A steel wire in a piano has a length of 0.7000m and a mass of 4.300 x 10^-3 kg. To what tension must this wire be stretched in order that the fundamental vibration correspond to middle C (fc=261.6 Hz on the chromatic musical scale)...

The following is an image of 1018 steel I annealed, image size is 100x zoom Just wondering what the darker regions are... perlite? http://i21.photobucket.com/albums/b300/DrGame/181879b.jpg

I was wondering if anyone knows where I could find charts with the weights that steel tubing, both square and round, buckles at or provide me with equations to calculate it myself as well as the amount of downward force that can be applied to a vertical piece of tubing before it bends. I'm sure...

Homework Statement A massive steel cable drags a 20.0 kg block across a horizontal, frictionless surface. A 90.0 N force applied to the cable causes the block to reach a speed of 3.60 m/s in 2.40 s. What is the difference in tension between the two ends of the cable? Homework Equations F=ma...

I know annealing makes a material more ductile, but what are the differences in the structuer of the material? I have a picture I took of 1018 and 1040 untreated... if you know the difference, think you can point them out? I'm not looking for differences in any specific material I just have...

A 9 kg steel ball strikes a wall with a speed of 10 m/s at an angle of 49.8 degrees with the normal to the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for .0911 sec, what is the magnitude of the average force exerted on the ball by the wall...

I need to calculate what percentage increase in impact strength I will get by inserting a 1" OD round tube with .083 wall inside a square 1 3/4" width tube with a .059 wall. Both are mild steel, ERW tubing. Check attached file for diagram. I can find out the tensile strength, if that is...