Cold Rolled Vs Hot Rolled Sheet Steel

Cold rolled has a smooth and shiny finish while hot rolled has a grey and scaly finish.

Cold rolled vs hot rolled sheet steel.

This process will produce steel with closer dimensional tolerances and a wider range of surface finishes. Hot rolled steel involves rolling the steel above re crystallization temperatures. Summary the following are some of the key differences in hot rolled vs cold rolled steel. During cold rolling the steel is annealed or exposed to heat and allowed to cool which improves ductility.

The main advantages of cold working are. When to use hot rolled steel the pros and cons of hot rolled steel come down to strength versus price. In comparison a cold rolled steel product with the same chemical composition has a yield strength of 365 mpa. Once hot rolled steel has cooled it is then re rolled at room temperature to achieve more exact dimensions and better surface qualities.

Hot rolled steel is rolled or shaped at a high temperature while cold rolled steel is rolled at room temperature. As an example a hot rolled steel product may have a yield strength of 235 mpa. One important difference to understand is hot rolled steel and cold rolled steel. Cold worked steels are typically harder and stronger than standard hot rolled steels.

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. Whereas cold rolled steel is processed in cold reduction mills followed by annealing and tempering. Cold rolled steel is essentially hot rolled steel that has been through further processing. Basic difference between hot rolled and cold rolled steel is the way they are processed.

Thus the yield strength of cold rolled steel is higher than that of hot rolled steel. Cold rolled steel is essentially hot rolled steel that has had further processing. The smaller products are also much more tolerant than the larger hot rolled versions. In this article we will compare hot rolled vs cold rolled steel sheets.

During the hot rolling process steel is heated to its melting point while being worked changing the composition of the steel to make it more malleable. The difference is not in their specifications or grade but in how they are processed at a mill. This lack of knowledge concerning the two types of steel is more common than you would think. The steel is processed further in cold reduction mills where the material is cooled at room temperature followed by annealing and or tempers rolling.