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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150 views

Alternatives to stainless steel staples

I have to mount a glass fibre woven mat onto a stainless steel foil and using staples seems to be the only way to do it. The environment is one where a large variety of solvent vapors will be ...
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2answers
3k views

Use of 410 Stainless Steel for replacement of 420 Stainless Steel

Can we use Grade 410 Stainless Steel for replacement of Grade 420 Stainless Steel? The application is for engineering components which have torsional and fatigue load. The reason for the ...
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4answers
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How thick is it reasonable for the walls of a steel gas pipeline to be?

The TurkStream project site claims the gas pipeline will use pipes made from 39 millimeters of high-quality carbon manganese steel with additional plastic coatings on both sides. Yes, they claim 39 ...
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1answer
510 views

Does weathering steel corrode the same as carbon steel when it doesn't develop a protective patina?

Weathering steel is supposed to form a protective patina when exposed to wetting and drying cycles. This protective patina prevents more corrosion from occurring. This is what differentiates it from ...
4
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1answer
143 views

How can I get a quick 2B shine on grade 316 stainless steel?

I have a stainless steel (316) 2B finish strip. I tried buffing the material for a shiny surface but it takes lot of time to finish my production. So, I want to know if there is any chemical ...
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2answers
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Arranging members within a truss efficiently

A wide variety of trusses exist for bridges and roofs. There are many different permutations when it comes to arranging the internal truss members. Depending on the direction, a diagonal member may be ...
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6answers
18k views

Steel selection for building a trailer

I'm thinking about building another trailer. I've built lots of smaller trailers in the past, but this time I'd like to build myself a small tandem axle gooseneck rated for 7,500 lbs. I am a ...
6
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2answers
687 views

How to interpret this BS 5950:2000 clause for splices in compression members?

A bolted end plate splice in a strut is designed to transmit compression by direct bearing of connecting cross-sections. If, after accounting for the bending moment due to strut action and additional ...
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2answers
4k views

Unbraced Length for Lateral Torsional Buckling vs. Yield Strength

The AISC 360-10 Specification for Structural Steel Buildings gives provisions for calculating the maximum unbraced length of a compression flange that separates yielding moment from lateral torsional ...
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2answers
2k views

How can double I-section walers be spliced to ensure effective moment transfer?

I notice that quite a number of deep excavation projects adopt double I-section walers to form a box beam since standard rectangular hollow sections don't come with such large sizes. The I-sections ...
6
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1answer
6k views

Densities of different phases of steel (austenite, bainite)

Steel seems to be a very complex material, not least because of the different phases and microstructures. At the moment, I'm especially interested in the bainite formation that happens when austenitic ...
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59 views

How to attach a shell covering to a flat piece with clay as adhesive? [closed]

I have a ceramic nozzle type structure sort of like this: The outer casing is joined with clay material with the inner ceramic nozzle. What we do is, we attach the clay in the casing, put the nozzle ...
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1answer
1k views

Number of Holes punched through a Plate of SAE 1010 Steel

Reviewing for a National Board Exam: How many 5/16 inch holes can be punched in one motion in a steel plate made of SAE 1010 Steel 7/16 inch thick using a force of 55 tons. The ultimate ...
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2answers
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Tube Steel - ASTM A1085 vs. A500

Recently, tube steel manufacturers in the US have begun using the new ASTM A1085 specification for forming tube steel (a.k.a. hollow structural section or HSS) shapes, as opposed to the existing A500 ...
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2answers
6k views

Knives that never need to be sharpened [closed]

I have a set of kitchen knives which I've owned for 18 years. These knives were sold as "never need sharpening". I assumed that to be complete nonsense at the time BUT it has proved to be true! These ...
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1answer
11k views

What thickness of steel sheet do I need to achieve a given strength?

I have a customer that originally bought 0.0351" thick sheet steel, CSA grade, G90 zinc coating. They moved to 0.0236" Grade80, G90 to cut costs. The thinner, harder steel satisfied their customer's ...
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1answer
2k views

How to rate a davit beam?

What forces are relevant when it comes to a davit lifting arm with a support? I'm not sure how to take the weight of the davit into account or how to calculate the max stress/strain on the system. ...
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1answer
5k views

What stainless steels are good for induction heating?

I'd like to know which stainless steels are good for heating on an induction stove. Wikipedia notes that the surface resistance resistivity is a good figure of merit. However, that article only lists ...
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2answers
2k views

Biaxial flexure of steel I-beams

If an I-shaped section is loaded in two directions (in both weak and strong axes), how can I find the maximum load-carrying capacity of them beam? There is an interaction equation in AISC 360-10, ...
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0answers
169 views

Thread-locking on AISC Clevises

I have a project that includes some standard AISC clevises on threaded rods in pure tension. I am trying to find guidance on how best to address the possibility that the rod could rotate with respect ...
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2answers
273 views

Is ductile iron a good material for a support column cap?

I am planning on having some column caps made (for Lally columns) and it seems to me the best approach would be to have them cast from ductile iron. The picture below shows the basic design: Of ...
8
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2answers
13k views

Force required to crop/cut a mild steel bar

I have cropping/cutting wedges with a thickness of 4 mm cutting either side of a round mild steel bar (17.5 mm). Imagine two wedges being driven together with a round mild steel bar in the middle (...
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2answers
443 views

Will stainless steel with a #3 finish corrode faster than a #4 finish?

I understand the difference between a #3 finish on a piece of stainless steel compared to a #4 finish being that the surface roughness is different. Specifically, a #4 finish is classified as having ...
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1answer
5k views

Is there a standard percentage to increase structural steel weight to account for bolts?

Weight of Structural Steel When calculating the weight of a steel structure, I usually calculate the weight of all of the various members and plates first. I then add an additional percentage to ...
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1answer
148 views

Special Considerations for Steel Plate Marketed for Laser Cutting

A contractor working for me on a steel construction project is using a steel product they refer to as 'laser plate' which is marketed as specifically as having good performance on laser cutters. This ...
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1answer
985 views

Calculating deflection for a home built trailer

I am designing a 4'x12' trailer frame. 8' of it will support weight, the balance will be the tongue. My area of concern is bending at the ends of the long supports. There will be a wheel assembly ...
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7answers
23k views

Is stainless steel plating possible?

Is there a method for plating steel with stainless steel? If so, is it chemical, electrical, or electrochemical? I did a quick search on the internet but was unable to find a service. I'm ...
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2answers
927 views

How can I hold an adjustable angle between two load-bearing plates?

I have two wooden plates with the same dimensions (5 cm thick, 50 cm long and 35 cm wide). The distance between plates must be at least 10 cm. Plate P1 is fixed but P2 rotates about the y-axis. ...
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2answers
521 views

How does galvanised steel culvert withstand abrasion from solid particles in the stream?

Zinc-coated roofing steel loses its zinc coat after about ten years because of being exposed to elements and it has to be painted. Zinc-coated powerline posts lose zinc too and experience corrosion, ...
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2answers
431 views

Are threads machined from high tensile steel more susceptible to damage?

I have an ASTM A311-04 1.25" diameter round 1050 steel bar that exhibits a tensile strength reading of 155,227 PSI. Normally, we receive material in the 13-133,000 PSI range. The bar is machined to a ...
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2answers
683 views

How is steel tempering addressed when installing pre-heat rivets?

AFAIK when you heat up a piece of steel to high temperature and let it cool down slowly (as opposed to shock cooling by say submerging it into water) steel gets softer - that's called tempering. Steel ...
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1answer
2k views

Do solid rivets fully fill the holes when installed properly?

Suppose I have two parts with holes aligned and I have to install a solid rivet into the "combined" hole. Clearly the rivet diameter must be slightly smaller than the hole diameter, otherwise it ...
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1answer
230 views

Hanging a steel mesh without significant deformation

I have an welded steel mesh, like in the following image. . Material: steel Diameter of the wires: 4mm Mesh: 15x15cm I found the following information about the welds: the minimal relative ...
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1answer
4k views

Effective length for lateral torsional buckling in a laced strut

When loaded vertically, a beam experiences compression in its top flange and tension in its bottom flange. The top (compression) flange would tend to buckle vertically much like a column, however, the ...
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1answer
2k views

Why build a cell lattice tower with square cross-section instead of triangular cross-section?

First, a neat image from Wikipedia Here the cell tower has three vertical (or maybe slightly inclined to the inside) thicker pipes which are located at angles of a triangle and those three thicker ...
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2answers
2k views

Normative Document for 'Grade 520' Steel

I am specifying a product made in Australia, which is made of "Grade 520 Steel." The manufacturer of the product lists a minimum yield stress of 520 N/mm² (75,400 psi) and a minimum ultimate stress of ...
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1answer
126 views

Subsea galvanic corrosion protection by paint

In submerged conditions galvanic corrosion effects exist between metals with dissimilar nobleness and the presence of seawater as electrolyte. Does reducing the contact area by using an nonconducting ...
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1answer
6k views

At what point does an I-beam becomes a H-beam?

According to BS5950, a beam section can be classified as plastic, semi-compact, compact or slender. For the same section area, a H-beam can take axial compression (without buckling) better than an I-...
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1answer
2k views

What is the process for qualifying a weld between structural steel and stainless steel?

In the US, typical structural steel welding is covered by either AWS D1.1 or AWS D1.5 (bridges). Both of these codes cover a wide range of carbon steels. AWS has a separate code for welding stainless ...
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1answer
5k views

Is it acceptable to paint weathering steel?

Weathering steel is not typically painted, because it produces a thin rust layer that protects the rest of the steel from further corrosion. Would painting weathering steel be an acceptable additional ...
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4answers
6k views

What bolts should I specify with Weathering Steel?

When using weathering steel (COR-TEN) on a project, what sort of bolts should I be using? I have yet to see fixings made of weather steel; presumably because the way it uses a sacrificial layer to ...
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1answer
1k views

Why are hyperboloid towers not popular anymore?

Hyperboloid towers were very popular in the end of 19th and the first half of 20th centuries - water towers, powerline anchor towers, sometimes tall radio towers were built using this design. The ...
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1answer
2k views

How many units of HB are used for steel bridges?

Bridges in the UK can be assessed (to standard BA34/90) using an HB vehicle (to standard BD37/01). The HB vehicle is 16 wheel loads, each of 2.5kN times "units". For concrete bridges the number of ...
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1answer
760 views

Can we change steel properties by application of magnetic field while quenching?

Austenite is non magnetic while $\alpha$-ferrite and pearlite are magnetic. (Magnetic properties of pearlite vary as a function of carbon content) If a strong magnetic field is applied in a ...
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4answers
2k views

How can the alloying materials of recycled steels be separated?

As I know, a very considerable part of the currently processed steels (around half of it) is coming from recycling. But during the steels coming into the recycling process are coming normally from ...
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4answers
3k views

Do “non-iron steels” exist?

There are numerous steel alloys, containing mostly iron, carbon, and some other metals. Generally speaking, we can think of them as if they were some type of steel. My question is: do "non-ferrous ...
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4answers
9k views

How do you calculate Mcr (critical buckling moment)

When designing a steel beam, the resistance to buckling is related to Mcr; the elastic critical moment for lateral-torsional buckling. However the Eurocodes give no advice about how to calculate this ...
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2answers
32k views

How does width and thickness affect the stiffness of steel plate?

I have a 2 mm thick steel plate which is 300 mm long and 30 mm wide, supported at either end. It supports a weight-bearing wheel that can roll along the plate. It currently supports the maximum weight ...
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2answers
5k views

What does the steel grade “11SMn30” mean?

I am starting to use steel in some of my designs, and while trying to learn more about this material and its properties I have realized that there is so much more to it than I thought. How does the ...
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3answers
3k views

At what temperature do I risk altering the structure of steel?

If I have structural or tool steel that has been treated to some standard (ASTM, SAE, ISO -- e.g., for hardness) but I don't know the details of the treatment, is there a "safe" temperature below ...