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Questions tagged [steel]

For questions related to the alloy steel: Its production, material properties and applications. The carbon content of steel is between 0.002% and 2.1% by weight for plain iron-carbon alloys.

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RHS column profile able to replace 3m UC 152x23 column?

I'm having some work done in the UK (Eurocode) which involves a steel column to support a beam at 1st floor (US: 2nd floor?) level. The column bears a very-close-to-vertical total load of 47.3kN (...
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Is a 1/8" AR400F steel plate strong enough, for 4,000 lbs?

I have a Ford F350 cab & chassis and a gooseneck trailer. For the gooseneck hitch I want to use a steel plate. The steel plate will be BOLTED to the frame, above the rear axle And the gooseneck ...
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2answers
56 views

Influence of a diagonal fold on a web + double fold situation

I need to build a steel frame with a steel web in it, as illustrated below. Flanges of the frame will be welded, as well as the web, along its whole perimeter. Would adding a diagonal fold to the web ...
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1answer
46 views

Can a plate under bending be designed using its plastic section modulus?

I am designing an end plate connection. My lecture notes show its bending capacity is calculated using elastic section modulus. For class 1 I-beams, we can use its plastic section modulus. I wonder ...
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2answers
52 views

Need Help to Remove Sway from Steel Post + Glass Panels

I have spanned ~15' with 2x 10mm tempered glass panels. They're connected in the middle with a 1.5" x 1.5" 16-gauge, 316 stainless steel post filled with concrete. This post has a 316 base welded on ...
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28 views

Possible improved approaches to 6mx3m moment-resisting frame with eccentricity+torsion, in advance of detailed engineer discussion

I'm putting a steel frame in, to "open plan" the rear of a brick cavity-wall terrace house in the UK, which will then have a single storey extension added behind it. I have already retained a ...
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2answers
67 views

What does the D stand for in the steel grade 16MND5

I would like to know what does the "D" means in steel grade 16MND5. According to the standard EN 10027: 16 means 0.16 % C MN 5 means 1.25 % Mn (5 must be divided by 4 to get the Mn mass fraction) ...
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1answer
43 views

what actually cause quench cracking ? non-uniform cooling or rapid cooling?

It’s well known that quenching most alloyed steels starting from AISI 4140 to high speed steels in water, brine , or sometimes oil will cause cracking and distortions. in industry oil quenching ...
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1answer
110 views

How to measure the unbraced length of lateral torsional buckling for negative moment in a W-shape steel beam?

I have a W-shape steel beam that is fixed-fixed and the top flange is fully braced for lateral torsional buckling. The negative moment at the end controls the design and there is no lateral bracing ...
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67 views

Can high alloy tool steels be quenched in brine?

It is will known that most of tool steels are quenched in oil to prevent cracking and distortion which appears when quenching in water due to non-uniform cooling caused by formation of insulating ...
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1answer
51 views

Is there is vanadium-free high speed steels?

Vanadium is present in all high speed steel grades. unfortunately vanadium not only very expensive but is also a will known cytotoxic metal. some workers get severe persistent cough lasts for months ...
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STEEL CONNECTIONS

Hi, so, would you consider the connection detailed here as fixed or pinned during your structural analysis?
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34 views

Does speed matter while one steel part is pressed into another?

If one press some steel part into steel hole to get unsplittable assembly, does this operation speed matter? Is it better to hit by hammer, or to slowly jam with vice? Does it relate to steel type (e....
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1answer
41 views

A Steel post and base question

I make solid curved wood furniture and frequently need something like a metal plate (1/8") with a (3/4" about) supporting pipe attached at 90 degrees. Welding is a little too cumbersome but I was ...
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0answers
40 views

How much (uniformly distributed) weight can this L beam support without bending? [closed]

As you can see in the picture, the L beam is 1in x 1/2in x 1/8in thick x 72in long and is made of ASTM A36 steel. It's bolted onto a vertical upright on both ends. What is the maximum uniformly ...
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1answer
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How thick does my stainless steel table top need to be?

I need to construct a table that will hold a water tank. The filled tank will weigh up to 1300 pounds. I have the table leg frames worked out to hold 2500 pounds so no worries there. (Here is a link ...
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1answer
86 views

Compression members with moment to BS 5950-1:2000

According to clause 4.8.3.2 the cross-section capacity for non-slender section is: $$\frac{F_c}{A_g p_y}+\frac{M_x}{M_{cx}}+\frac{M_y}{M_{cy}}\leq 1 \qquad (1)$$ According to clause 4.8.3.3.1 ...
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1answer
27 views

Creep / cold flow SS304 vs A514/T1

I made a pallet lift table out of 1/4" SS304 and now have about 5x the deflection that beam calculations predict. I noticed that the machine was shipped supporting a 500lb pallet. I thinking a few ...
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1answer
46 views

How can I calculate the maximum load of a steel box section frame?

Is it possible to calculate the maximum load of the steel structure shown in the image using its dimensions?
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1answer
127 views

With which parameter can you specify whether a metal is ductile or brittle

I have to do a durability approval of feather key (shaft-hub connection) and the formulas are dependent if the shaft respectively the hub is ductile or brittle. But what is the decision about to say ...
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0answers
33 views

Why increasing the coefficient of friction results in evenly distributed load in rolling machines?

I'm designing a rolling machine for reduction of steel ingots of $5 mm$ to $1.96 mm$ thick. I can convince myself using equations why increasing the coefficient of friction (in case of lubrication ...
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3answers
2k views

How does the strength of a square tube depend on the side size?

There are two square tubes of the same length, material and wall thickness, one being 40x40mm, the other 20x20mm. How does their strength against bending compare? On the one hand, the cross-sectional ...
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2answers
38 views

What steel to use? What thickness and width? What angles to use? [closed]

I am trying to develop my own spring steel version of a carbon fiber running blade that you might see in the paralympics. Except mine is for someone who still has their foot/leg. Nothing like that ...
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2answers
69 views

Is martensitic steel 455 magnetic?

According to wikipedia there are 3 types of steel based on the crystal structure: austenitic, ferritic and martensitic. Austenitic steels are non-magnetic where 300 series stainless steels belong to. ...
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0answers
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Bonding steel plate to fiber cement sheet effectively

I've been trying to produce a cheap panel using fiber cement and zincalume sheet. There is a research paper that I read about bonding steel plate to concrete to increase their tensile strength by ...
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1answer
30 views

Carbon Steel vs CL

We are specifying pipes for a water injection system (high pressure - Rating 1500) with a physiochemical analysis of 36400 ppm chloride (CL). We need to use Carbon Steel pipe and to limit the ...
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1answer
45 views

Do nylon and rubber bushes usually come in sizes between steel pipe sizes?

I'm in Cambodia where I don't speak the lingo and I'm hoping to do a little DIY project. If I were to buy two different off the shelf steel tubes am I right in thinking that the most common nylon and ...
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2answers
536 views

What's the difference between tempering and aging?

The processes sound really similar; I'm asking with respect to Martensite processing. Essentially the difference between Tempered martensite and Aged martensite for Steels
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Why shouldn't dark area analysis be used to estimate carbon content on high carbon hypoeutectoid steels?

I had this thought with me for quite some time, that you can't use the usual formula for estimating carbon content on a Nital etched hypoeutectoid sample (DarkArea*0.77) if the steel obviously has ...
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4answers
2k views

Benefits and disadvantages of aluminium alloys as a replacement for structural steels in ships

My Answer. Benefits: The major advantage of aluminum in ship building is its strength to density ratio. Aluminum has high tensile strength with less weight, which results in lowering the weight of ...
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1answer
38 views

Spring degradation in hand grip trainer

Consider a spring like this (this one CoC hand gripper): They claim on their web site, that the spring will not degrade during time: Do your grippers get weaker with time? No, so don’t worry if ...
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1answer
85 views

DOM MILD Steel ASTM A513 Type 5 Tube

How can the DOM MILD Steel ASTM A513 Type 5 Tube be improved for corrosion resistance. it has a low but good welding and machinery ability but if we want to improved the material for corrosion ...
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2answers
106 views

Should I discard part of the data (steel traction test)

(please excuse my bad English. I don't speak English) I have to deal with an old hydraulic machine, recovered from a deposit. I have no knowledge on mechanical engineering. Only civil engineering. ...
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2answers
513 views

Beam deformation under trapezoidal load

Can somebody help me find the equation for the deformation of a simply supported beam under trapezoidal load (with intensity Q1 and Q2, at starting point X1 and end point X2)? I am trying to find it ...
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2answers
53 views

Surgical steel and part production

Steels 316L, 420, 17-4PH and 316LVM are often chosen for medical products and labelled as "surgical grade". I am curious as to how these types of steel are used for the production of common medical ...
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0answers
55 views

Optimal size and shape for a steel target?

Problem I'm building a steel target for long-range rifle shooting. For those unfamiliar, the purpose of the steel is to produce a loud "PING" when the bullet strikes the target. It's very fun. Since ...
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2answers
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Do the steels 1.4404 and 1.4571 have the same corrosion resistance?

The steel type 1.4571 / (X6CrNiMoTi17-12-2, ASTM: more or less 316Ti) is commonly used in wastewater applications due to it's good corrosion resistance. An alternative is 1.4404 / (X2CrNiMo17-12-2, ...
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1answer
188 views

Caulculating maximum shear stress at certain points

I have a structures problem I cannot solve, I have the answer and I have attempted the question. I just need to know where I am going off track. Any assistance would be highly appreciated. My work is ...
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3answers
54 views

Heating up Tool Steel with a welder

I'm a newbie of electricity and I would like to know if a piece of tool steel connected to both positive and ground pole of a welder tend to heat up red hot. If yes, at wich amperage? There are some ...
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1answer
95 views

Why are steel I-beams mostly symmetrical?

From what I understand most types of steel are strong both in tension and compression, yet they are still usually significantly stronger in tension. Suppose a common I-beam supported on both ends and ...
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1answer
55 views

Do the steels 1.4404 and 1.4571 look the same?

A contractor delivered three components, all are supposed to be in 1.4571. Part A is actually done in 1.4404 / (X2CrNiMo17-12-2) (according to pretty conclusive documentation). Part B is allegedly ...
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2answers
110 views

Weathering steel?

Can weathering Steel be left unpainted? Are there any environments when the properties of weathering steel will prevent the steel from performing as designed, i.e. surface rust forming to encapsulate ...
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3answers
273 views

Does heat treating steel change its Thermal Expansion Coefficient?

Given two identical samples of heat treatable steel in both composition and geometry, if one of the pieces is annealed or hardened would there be a measurable difference in their thermal expansion ...
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1answer
514 views

Actual amount of reinforcement gained by adding gusset to welded steel tube construction

This question bothers me for quite a while and is about bicycle frame construction, specifically a BMX frame and even more specifically it's front triangle. It is a heavy duty frame by definition, and ...
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2answers
225 views

Damascus steel etching

I've got a damascus steel knife, which I accidentaly broke the wooden handle. I teared it apart and all I was left was a bare blade. I've created a new wooden handle, but while making it, I've also ...
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2answers
36 views

Resistance spot welding multiple metal thinknesses

I have a question for all experienced in manufacturing of steel products; Is it possible, and or workable to resistance spot weld dissimilar metal thicknesses together? for example, 1.5-2mm thick ...
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1answer
103 views

Maximum Carbon content on the surface of Mild Steel that is Pack Carburized

Starting from a piece of Mild Steel that is then Pack Carburized, what's the maximum Carbon content that the surface can soak in? Given that we keep it around less than 1000°C and enough time, is it ...
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1answer
67 views

Why aren't Steel Prefab Buildings common for residential use? [closed]

Steel prefabricated buildings cost less, require less time and provide a reasonable quality compared to concrete buildings. They are common for warehouses, offices and other types of buildings. Also, ...
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1answer
252 views

AISC 360 vs AISC 341

I have been trying to determine the response coefficients for seismic analysis of Non building structures in ASCE 7-10 and found that the value of R, the response coefficient, is larger in case steel ...
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0answers
463 views

General formula for calculating torsional and warping constants of built-up section

In order to calculate the elastic critical moment of a laced double I-section, I need the torsional and warping constants. Is there a general formula to obtain this? BS 5950 only has formulas for ...