Industry information


How can you calculate the weight of steel?

1、 Calculate the volume of steel in your part or assembly. Find the density of your particular alloy; regular carbon steel is around 7.85g/cm^3. Multiply the volume by the density to get the weight. If you have a small, complex shape you can weigh it directly. 2、 If your steel parts are of a standard section like RSA, RSC or CHS, you can look up the weight per meter from the manufacturer’s tables. Multiply this by the length in metres, and you have your weight. 3、 Model the whole thing in Solidworks or similar, set the material properties to the alloy of your choice and use the evaluation tools to find the weight, volume and centre of mass.

What are the advantages of using steel in construction?

Durability Steel is famous as the most durable and the strongest building material available today. It is not only resistant to fire, but also resistant to termites, mold, mildew, water, as well as a number of pests that destroy wood. In the US, each year thousands of agricultural properties are damaged to a significant degree due to the presence of termites. If you are looking for a durable option for a building, farm steel buildings are the best choice.Hibbs General Contracting offers state of the art steel buildings made from high-quality steel from General Steel. Strength When you are getting a new steel agricultural building, you are investing in the security and safety of your crops, livestock, and equipment. Steel is the only material that offers all of these. With the right quality of steel, you are going to add strength to your buildings. All you have to do is find the best contractor and get the agriculture steel building made to ensure maximum protection of your farm.Hibbs General Contracting is the best choice when it comes to building erection services. They are well known for their hands-on approach particular to each client, resulting in highly sustainable and durable buildings. With steel used from General Steel, nothing beats the premium quality steel buildings from Hibbs General Contracting. Appearance If you are worried about the aesthetics of the farm steel buildings, you will be pleased to know that various attractive add-ons, such as stone panels, stucco, wood and decorative bricks can be added to the steel structure of the building. With ranch steel buildings, you do not have to worry about the appearance of the building and your new steel building will completely blend with the existing the existing structures you have in your farm.

What are the differences between galvanized and stainless steel?

Galvanized steel is just steel that has been galvanized, which is to say it's surfaces have been coated with a layer of zinc which provides a substantial amount of protection from corrosion.Stainless steel is a totally different class of material, it's steel mixed with Chromium. When exposed to the atmosphere the Chromium at the surface forms a thin protective film of chromium oxide which protects the underlying material from further oxidation. Because the Chromium is distributed throughout the steel you can cut, grind, drill, etc. stainless steel and the newly exposes surfaces will be protected just as well as the original part surfaces (there are exceptions to this, but that's another question).In galvanized steel the zinc is only on the surface, if you cut through a galvanized part you'll expose "unprotected" steel underneath. However, one of the neat and useful features of a zinc plating is that the exposed steel won't actually start rusting until all the zinc has been oxidized. The Zinc acts as a "sacrificial anode", protecting the underlying steel by preferentially corroding first. So a galvanized steel part can be scratched, have holes drilled in it, etc. and still remain resistant to corrosion for a very considerable period of time. Thanks to this property we can build things like highway signage, bridge beams, telephone poles, basically any structure exposed to the atmosphere, out of plain steel and then galvanize it for much less cost than using stainless steel and still have long-term protection against corrosion.

How do carbon steel and alloy steel differ?

Alloy Steel - Alloy steel is a type of steel that has presence of certain other elements apart from iron and carbon. Commonly added elements in alloy steel are manganese, silicon, boron, chromium, vanadium and nickel. The quantity of these metals in alloy steel is primarily dependent upon the use of such steel. Normally alloy steel is made to get desired physical characteristics in the steel.Alloy steels are divided into low alloy steels and high alloy steels. When the percentage of added elements goes past 8 (in terms of weight), the steel is referred to as high alloy steel. In cases where added elements remain below 8% by weight of the steel, it is a low alloy steel. Low alloy steels are more common in the industry. In general, addition of one or more of such elements to steel makes it harder and more durable. Such steel is also resistant to corrosion and tougher than normal steel. To alter the properties of steel, it needs heat treatment when elements are added to it.Carbon Steel - Carbon steel is also known as plain steel and is an alloy of steel where carbon is the main constituent and no minimum percentage of other alloying elements is mentioned. Carbon steel is not stainless steel as it is classified under alloy steels. As the name implies, carbon content is increased in the steel making it harder and stronger through application of heat treatments. However, addition of carbon makes the steel less ductile. The weldability of carbon steel is low and higher carbon content also lowers the melting point of the alloy. It is an amazing fact that of all steels used in the US, 85% is carbon steel.  

What are the most common uses of steel?

As the others have answered, steel is used for tens of thousands of things, but where does most of the steel go? There are four major users:Transportation: Ships, Cars, Trains, Rails, Bridges, Containers, and PipelinesConstruction: Rebar, Angle Iron, I beams, Columns, StructuresManufacturing and Production: Power Plants, Refineries, Mills, FactoriesStorage: Tin Cans, Storage containers, Warehouses, Barrels

Which is stronger stainless steel or carbon steel?

When you want to compare stainless steel and carbon steel , strength wise stainless steel is stronger than the carbon steel. There are various other properties to be considered for comparison. Given below is a detailed comparison of the two taking flanges as examples. Costing : Cost is a very important factor that is to be considered in the Manufacturing Industries.Miled steel is a cheap form of iron-carbon alloy, and hence is cheap and suitable to be used in the flange Manufacturing Industries.Stainless steel is only more expensive to make , more expensive to machine and when it is welded it moves/changes its shape and needs very skilled and experienced welders.Also, stainless steel contains additional compounds that reduces hydro-corrosion and increases the hardness of the steel.This makes is more expensive, less malleable and is more likely to suffer from stress fatigue and stress fractures, which calls for a lot of fixing, hence increasing the cost factor and making it less suitable to be used for the making of flanges.      Usability : Mild steel is the most common high volume steel in production.It is often used when large amounts of steel is needed, for example as structural steel .Mild steel is the most common form of steel as its price is relatively low while it provides material properties that are acceptable for many applications especially in the flange making industries.On the other hand Stainless Steel is a hard , beautiful metal which is ideal for furniture and art decor but finds lesser applications in Manufacturing Industries and especially that of flanges due to the cost factor, brittleness , non – malleability ,etc.      Malleability : Mild steel is any day more malleable than stainless steel , hence paving its way in to the manufacturing industries and its excessive use in flange making.It is subject to corrosion but is malleable and does not suffer from the brittleness issues of stainless steel thereby making stainless steel less effective to be used in flange making.      Corrosive properties : When it comes to resistance to corrosion, mild steel is a lot more vulnerable when compared to steel.Basically, steel contains a sufficient amount of chromium that helps it form a kind of passive film made out of chromium oxide that helps prevent further corrosion.Do keep in mind that there are modern treatments that can be applied to mild steel which can help delay or completely prevent corrosion in it as well.      Hardness and Strength: Mild steel is less harder than that of stainless steel as stainless steel reduces hydro-corrosion and increases the hardness of the steel.But this makes it less ductile.Mild steel has a reasonable strength and hardness it is easier to weld than stainless, and it is cheaper.Eventhough mild steel has a relatively lower tensile strength , it is malleable and ductile , highly suitable for the manufacturing of flanges.However mild steel can be hardened by increasing the carbon content and surface hardness can be increased through carburizing.

Why do civil engineers use steel in construction? Why don’t they use other types?

Steel + Concrete = SafeSteel only = ExpensiveConcrete only = Are you mad?Everyone knows that concrete is damn good in compression while steel is great in tension. Steel is also good in compression but because it has very high strength, the cross section generally becomes small and the smaller the cross section the more are the chances of buckling, while concrete on the other hand has low strength so we require larger cross sections and in doing so we overcome the buckling effects.Now, the important question is why only steel? Why not aluminium?The reason is, when both the material are heated they possess a similar coefficient of thermal expansion, concrete has of the order of 14 x 10^-6 while steel has 12.6 x 10^-6. So when it gets hot, both the material experience almost similar strains and there is no internal stress formation. Now one more question comes to mind is, what would happen even if internal stresses are formed? Well, those small strains can create tensile stresses in concrete, once these stresses are induced then concrete cracks and once the concrete cracks the bond strength between steel and concrete is reduced and once it is lost then the material is as good as an independent one. So this gives a great advantage of using steel rather than anything else in concrete.Second reason is the availability of steel and the way we can recycle it. We have huge furnaces which can process and recycle iron and it is available in quite an abundance.Even if we had used aluminum would it have been better? No, because aluminium is more flexible than steel but it does not show any yield point. In fact it shows a very non linear behavior and there is no such effect as strain hardening. Also aluminium loses strength quite rapidly just after 80 degrees of heating. And in case of earthquake we rely on strain hardening of steel which helps us predicting the behavior.So in all, all the points are in favor of steel so why not use it rather than anything else.

What is the difference between iron and steel?

Iron is an element however it is not found in its pure form and even then it only exists in the lab as it is very soft and very difficult to purify iron to its pure properties.Iron as the word is use commonly is typcially an alloy of iron with large amounts of carbon and also typcially manganese . Carbon content is typically 3-5% weight and maganese roughly .5-1.5% with other elements randomly present in smaller quantities. Silicon is typcially present in a couple weight percent in cast iron too.Irons main advantage is that is easier to cast than steel due to the low melting point the result of the high carbon content also reducing the carbon content to get steel then maintaining the higher temperature is expensive compared to iron.Steel however is much stronger and more ductile thus making it worth the effort to get the carbon out.A quick info about iron-carbonMetals and other solids can actually dissolve other elements into a solution . Iron does not dissolve carbon very well at low temp but it's solubility abruptly increases around 1000 C to .8 % increasing to almost 2.5% due to a change in the atomic arrangement . Carbon that doesn't dissolve turns into cementite which is an Intermettalic (basically a compound) that is very brittle but also strong. After 1-1.5% carbon steel becomes too brittle to be useful however 2% and up to 4% the melting point is rather low making it easy cast despite the brittle nature. At very high carbon percentages carbon will come out and become graphite making the cast iron ductile.Realistically high carbon steels and low carbon cast irons are similar . The reason for the different name is diminishing returns . Adding carbon to steel makes its harder and more brittle. At a point it becomes so brittle that any internal stresses or defects cause it to prematurely fail weakening the material. This occurs around 1.5-2% carbon. Materials around that concentration have the manufacturing disadvantages of steel with the low performance of cast irons thus don't really exist practically.

What is the difference between carbon steel and mild steel?

Steel is an alloy of iron and carbon. ALL steel is carbon steel. BUT due to sloppy use of the language, High carbon steel is sometimes called just “carbon steel.” Mild steel usually has carbon below 0.3% and High carbon steel above 0.6% Medium carbon steel falls between.Most people Only think of high and medium carbon steel as “Carbon Steel,” but ALL steel is carbon steel. The term “Plain Carbon Steel” is often used the diffirenetiate the simple steel in which carbon is the principal alloying element from “low alloy steels” in which other elements are very important.

How can I calculate steel of slab?

Example: We have to find the steel quantity for the room , Which size is 5 m x 4 m . Given Data :Size of Room = 16.4 x 13.12 ftMain bars diameter = d = 0.5 inch (12 mm).Distribution bars diameter = d =0.4 inch (10mm).Spacing of Main bars = c/c = 150 mm c/c or 0.49 ft or 5.9inchesFormula to find the No’s of ( M.B ) Main bars = 500 / 15 + 1= 34.33 say 35Straight bar = 18Bent up bars = 17 cranked bars to act against negative moment.2) Spacing of Distribution bars = c/c = 20 cm c/c or 0.65 ft or 7.87 inches.Formula to find the No’s of ( D.B ) Distribution bars = 400 / 20 + 1= 21 No’sunit weight of steel or density is 7850 kg/m3.or Weight of steel = D^2/162 kg/m.