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

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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57 views

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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48 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
36 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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80 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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29 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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832 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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33 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
62 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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36 views

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
39 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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Chemical or corrosion related concerns safety concerns with mating brass threaded & quick disconnect couplings to aluminum/stainless steel fittings

A part from the mechanical mating concerns - I need to know if there are any chemical or corrosion related concerns with connecting threaded & quick disconnect brass fittings with stainless steel ...
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2answers
158 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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What type of steel is the Golden Gate Bridge made of?

What type of steel is the Golden Gate Bridge made of? What metals does the alloy consist of? Where and how was it created? Does the type of steel used in the bridge have a serial number? Is the type ...
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23 views

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
471 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
27 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
59 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
79 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
343 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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46 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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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
103 views

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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128 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
46 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
71 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
50 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
107 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
114 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
262 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
135 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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What is the best Grade of Stainless steel for a high pressure vessel

I am going to have a spherical pressure vessel made. I need to know which grade of stainless steel suits best. The pressure vessel will contain liquefied diluoromethane at 1.8Mpa with ...
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2answers
26 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
83 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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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
170 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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416 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 ...
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1answer
50 views

How does infill material affects the capacity of a tubular section with H-section inside?

How does one consider the moment capacity of a combined pipe plus H-section if the infill material is: Sand, friction angle 30 degree Grout, C20 Concrete, C45 Eurocode has a section on composite ...
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2answers
462 views

Is it possible to make AR500 steel at home by just melting its components and applying appropriate heat treatment?

Would it need hot forging or hot pressing before heat treatment to be equal in strength and toughness to commercial AR500 steel plates?
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2answers
62 views

Which types of steel would be most appropriate for blunt cutting weaponry on a combat robot?

I'm getting more serious about a combat robot design I've been contemplating for several years now (BattleBots, Robot Wars, etc) and find myself overwhelmed by the sheer variegation of ASTM and AISI ...
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1answer
206 views

What is the difference between pipe section, hot-finished, and cold formed circular hollow section?

I was reading a steel catalog and saw that it categorizes steel sections separately into pipe section, hot-finished circular hollow section, and cold formed circular hollow section. Given the same ...
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1answer
74 views

Elastic bands vs Spring Steel?

My friend and I are working on a project requiring for us to propel a syringe forward in a small container with significant force. We are debating whether to use an elastic band wrapped around the ...
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32 views

Plate rolling - Hot or Cold rolled plate stainless steel

What is preferred material for plate rolling (roll bending) when talking about stainless steel - hot rolled stainless steel plate or cold rolled stainless steel plate. Final product would be for ...
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1answer
77 views

How to calculate the lateral bending capacity of a laced strut?

The vertical bending capacity of a twin UB laced strut can be calculated by $M_c = p_y \cdot 2Z_x$. Where $Z_x$ is the section modulus of a single UB section about its major axis. For lateral bending ...
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1answer
29 views

Steel surface welding with high-frequency current

High-frequency currents induce skin-effect resistance that is used on some applications to weld metals. Assume you have two steel rectangles of dimension $h_0, w, l$ and $h_1, w, l$ placed together ...
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How to duplicate measurements from one piece of material to another?

I am not sure if this is the right place to ask this but. I have an offroad skateboard from MBS. I bought their brake system which comes with a circular piece of aluminum. Pictures attached. You can ...
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208 views

Steel : is Damascus steel still relevant compared to modern alloys?

Damascus steel is a multilayered hand-forged steel used in the past for arabic and japanese weapons and now for kitchen knives and various connoisseur blades. Usually, two alloys are used ...
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2answers
654 views

How to calculate principal moment of inertia of an unequal angle?

Is there a formula to calculate the moment of inertia of an unequal angle? I am not talking about x or y direction but the maximum and minimum moment of inertia about its rotated axes (usually ...