Hot Rolled and Cold Rolled Steel: What’s the difference?

This blog article compares the advantages and disadvantages of two kinds of steel - hot rolled and cold rolled steel. The differences among the two are explored, including their uses and applications.

The difference explained for hot-rolled vs. cold-rolled steel:

Steel is a metal found in many products, from automobile bodies to kitchen utensils. There are two different kinds of steel: hot-rolled and cold-rolled. Cold-rolled steel is created by taking a piece of sheet metal, flattening it out on the surface, and then rolling it over to its length. This process gives a softer finish with a smoother edge that is often used for architectural projects. 

On the other hand, steel that is hot-rolled is created by straightening a bar of raw metal then rolling it into thin sheets that have been heated in a furnace until they reach its maximum durability. The process of heating and cooling stresses the metal, which makes it stronger and tougher to withstand wear and tear. The main difference between hot-rolled steel and cold-rolled steel is that hot-rolled steel has a higher carbon content. While it's not as strong, it can be formed into a more complex shape than cold-rolled steel.

What are the applications of JSW hot rolled steel and cold rolled steel?

Hot rolled steel is valuable when the product needs to be resistant to high temperatures and requires more strength. Cold rolled steel is used when the product does not need to be resistant to high temperatures and doesn't require as much strength. One can decide which type of steel they want for their project depending on what they will use it for.  Hot Rolled steel is used for general structural applications. It is stronger and more durable than steel that is cold rolled. It is also known as mark work because it is used to make decorative cuts on finished products, such as kitchen knives.

Cold rolling method:

Cold rolling is most often used in the production of thicker steel, where the process produces a more uniform, higher tensile strength material. This is because cold rolling works by compressing each metal layer with less force than hot rolling.  Unlike hot rolling, the cold rolling process uses a lot of lubricants to reduce friction. The result is an improved mechanical yield and an increase in ductility.  The cold-rolling method for steel production involves applying a lot of pressure to the metal as it enters a series of rolls. 

Hot rolling process:

The hot rolling process is an industrial process for heating and shaping metallic materials by applying high temperatures, typically in a mill. For example, heavy steel is heated to very high temperatures to reduce the metal's thickness. This process is called hot rolling; it makes it more malleable and removes most of the inclusions in the metal. 

A cold rolling process, which is different from the hot rolling process, occurs after the material has cooled down when it's easier to work with. 

For durable steel for your next project, JSW hot-rolled steel is a reliable producer that will provide you with a wide range of possibilities, including durable steel and steel with high quality.