Q:Is there a difference between hot rolled and cold rolled steel coils?

Yes, there is a difference between hot rolled and cold rolled steel coils. Hot rolled steel coils are produced at high temperatures and have a rough, scaled surface with slightly rounded edges. They are generally used for applications that require less precise dimensions and a rougher surface finish. On the other hand, cold rolled steel coils are produced at room temperature and have a smoother surface with tighter tolerances and sharper edges. They are commonly used for applications that require precise dimensions, a smoother finish, and higher strength.

Q:How are steel coils used in the production of storage systems?

Steel coils are used in the production of storage systems by being formed into sheets or strips, which are then shaped and welded to create the framework and shelves of the storage units. The high strength and durability of steel make it an ideal material for supporting heavy loads and ensuring the longevity of storage systems.

Q:How are steel coils used in the production of steel clips?

Steel coils are used in the production of steel clips by being unwound and fed into a machine, where they are cut, shaped, and formed into the desired clip design.

Q:Want to construct a patio cover approx. 20 feet long. Only want to use a 6x6 or 8x8 post at each end. What size steel i-beam would I have to use to carry the load???

First of all is it a rule of thumb with carpenters and ironworkers never to set steel on wood. I would use a 14 tall (2) ply lvl header. *Laminated veneer Lumber. This will hold the weight of the structure between your posts. A steel beam would be quite costly today as prices on steel have skyrocketed, plus you would need a boom truck or small crane to set this beam, and you would need some sort of mounting bracket or holes pre-drilled in the beam ends to secure it to the posts. Plus you would need to have the beam delivered and if your patio is in the backyard - you would need another pc.of equipment to get it around back. Advice from me is to go with an LVL beam. They are 1+3/4 Thick and you would need a (2 ply ) beam, which means you set one pc. and then laminate another one into the first. Glue between layers (use heavy duty liquid nails) and then Lag screw them together. Use 5/16 x 3 lag screws with a washer on each one. Pre-drill holes about 3/16 smaller than lag screws - then insert lag screws and tighten up with an electric impact.

Q:i mean the properties include the elasticity, impact load and ductility. am doing assignment about the perfect material that should be possessed by spring and i found alloy steel is the perfect and am confused whether stainless steel is the same with alloy steel ?

Alloy Steel Vs Stainless Steel

Q:case hardening steel is adviced or thru hardening steel is most suitable?

I don't know your application, but here is some advice. Case hard provides a hard shell around soft steel, depending on the bake, the case is usually .002-.008 thick. (thousands of an inch) Heat treated steel or tool steel is hard all the way thru. Case hardening, provides toughness with flexibility, however, once it's compromised, the part is scrap. Hardend tool steel is extreemly hard throughout and the harder it is, the more brittle it becomes. The application of the part will help you to determine the material needed. For instance; Plastic injection molds are very hard so the hot plastic wont erode them over years of use. Punch Press dies aren't as hard but are tougher to withstand the shock. Machine bolts are case hardened so they can last, but soft enough to allow some stretching during tightening. Either way, the time in mfg will be about the same. Most tool steels today cut like cheese, but take time to be heat treated. Tool steel will cost a bit more than low carbon steel. Low carbon steel is as machinable, and cheaper, but, again, the baking period is as long or longer than tool steel. There are a lot of materials on the market today that maintain the durability of heatreated steel without having to go thru that process. 4140, ( or chrome/moly) comes to mind. There are also some 400 series stainless that work as well, and others. You need to determine strength, flexibility, ease of mfg, cost and repairability when considering which steel to use.

Q:i have been playing with hand me down graphite shaft irons and wedges. i was wondering if someone of my stature (5'3, 90 lbs., 12 years old) should be using steel shafted irons. i can definately swing them im just wondering if they are better for making contact

Yes, i my self is 5'5, 100 lbs 13 years old and i am still using graphite shafts. I am soon making the switch to steel shafts although they are heavier, they make better contact, have better consistency of hitting shots and also hit further as they are heavier. Hope this helps you to making your switch to steel shafts, I'm getting mine very very soon

Q:How are steel coils used in the manufacturing of roofing materials?

Steel coils are used in the manufacturing of roofing materials as they are rolled into sheets or formed into various shapes to create durable and long-lasting roofing products. The coils are processed through machines that cut, bend, and shape them into the desired dimensions and profiles required for different types of roofs.

Q:How are steel coils used in the manufacturing of agricultural trailers?

Steel coils are used in the manufacturing of agricultural trailers as they provide strength and stability to the trailer's structure. These coils are typically shaped and welded to form the trailer's frame, ensuring durability and load-bearing capacity. Additionally, steel coils can be used to reinforce certain components of the trailer, such as the axles or suspension system, to enhance its overall performance and withstand the demands of agricultural work.

Q:How much do steel coils weigh?

The weight of steel coils is subject to variation, which is determined by multiple factors including coil thickness, width, length, and the particular type of steel employed. In general, steel coils can range in weight from a few hundred pounds to several tons. It should be emphasized that the measurement of steel coils typically revolves around their weight per unit area, referred to as the "basis weight" or "coil weight".