Hot Rolled Vs Cold Rolled Sheet Steel

Cold rolled steel is essentially hot rolled steel that has had further processing.

Hot rolled vs cold rolled sheet steel. Hot rolled steel involves rolling the steel above re crystallization temperatures. Over a million tons of permanent and. Full hard half hard quarter hard and skin rolled. During cold rolling the steel is annealed or exposed to heat and allowed to cool which improves ductility.

Cold rolled has sharper corners and more precise dimensions than hot rolled. Hot rolled steel is used in situations where precise shapes and tolerances are not required. Cold rolled steel is essentially hot rolled steel that has been through further processing. Cold worked steels are typically harder and stronger than standard hot rolled steels.

Hot rolled is manufactured in a single or two step process heating pre rolled steel beam blanks to such a high temperature that it allows it to be easily shaped and formed into sheet pile. Cold rolled steel while hot rolled steel is heated then cooled cold rolled steel is heated and cooled at the room temperature and then rolled after again. Since cold formed steel sheet pile was introduced over 40 years ago worldwide there are now over a dozen mills producing cold formed steel sheet pile compared to a half dozen hot rolled mills. Basic difference between hot rolled and cold rolled steel is the way they are processed.

The steel is processed further in cold reduction mills where the material is cooled at room temperature followed by annealing and or tempers rolling. Cold rolled has a smooth and shiny finish while hot rolled has a grey and scaly finish. There are three main visual differences between the two processes. Alternatively cold rolled steel has sharp edges a very smooth surface texture and an oily or greasy feel to it.

Hot rolled steel is rolled or shaped at a high temperature while cold rolled steel is rolled at room temperature. Finished products created by the cold rolled steel process include bars strips rods and sheets which are usually smaller than the same products available through hot rolled methods. Once hot rolled steel has cooled it is then re rolled at room temperature to achieve more exact dimensions and better surface qualities. Hot rolling and cold rolling are two methods of shaping steel.

Cold rolled steel sheets and strips are available in a couple of different conditions including. Cold formed is manufactured in two steps. The smaller products are also much more tolerant than the larger hot rolled versions.