Difference Between Hot And Cold Sheet Steel

Basic difference between hot rolled and cold rolled steel is the way they are processed.

Difference between hot and cold sheet steel.

As you might suspect the manufacturing process behind cold rolled steel is a bit different. Despite the name this process refers to steel that is pressed with the pressure of a roller at room temperature. Whereas cold rolled steel is processed in cold reduction mills followed by annealing and tempering. Hot rolled steel involves rolling the steel above re crystallization temperatures.

The following are some of the key differences in hot rolled vs cold rolled steel. The differences between hot rolled steel and cold rolled steel relates to the way these metals are processed at the mill and not the product specification or grade. In comparison a cold rolled steel product with the same chemical composition has a yield strength of 365 mpa. Cold rolled steel has an oily or greasy finish very smooth surface and very sharp edges.

Thus the yield strength of cold rolled steel is higher than that of hot rolled steel. One important difference to understand is hot rolled steel and cold rolled steel. Hot rolled steel comes with a scaly surface slightly rounded edges and corners and the surface is non oily. As an example a hot rolled steel product may have a yield strength of 235 mpa.

When approaching a company for a quote on material costs for producing a product you will want to know the differences between metals. The basic difference between. Cold rolled has a smooth and shiny finish while hot rolled has a grey and scaly finish. 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. In other words understanding the differences between hot and cold rolled steel will help designers and engineers achieve better results and at the best price possible. The smaller products are also much more tolerant than the larger hot rolled versions. The main advantages of cold working are.