Difference Between Hot And Cold Sheet Steel

Cold rolled has sharper corners and more precise dimensions than hot rolled.

Difference between hot and cold sheet steel.

The difference is not in their specifications or grade but in how they are processed at a mill. The rolls induce plastic deformation. This lack of knowledge concerning the two types of steel is more common than you would think. In comparison a cold rolled steel product with the same chemical composition has a yield strength of 365 mpa.

For example consumer electronics and telecom products metal furniture automobile industry etc. The basic difference between. Cold rolling steel allows for the creation of very precise shapes. Hot rolled steel is rolled or shaped at a high temperature while cold rolled steel is rolled at room temperature.

When forming metal it has to go through a process called rolling. Compared to hot rolled steel cold rolled steel has a nearly 20 increase in strength through the use of strain hardening. Cold rolled has a smooth and shiny finish while hot rolled has a grey and scaly finish. As an example a hot rolled steel product may have a yield strength of 235 mpa.

Cold rolled steel has an oily or greasy finish very smooth surface and very sharp edges. Cold rolled steel is essentially hot rolled steel that has had further processing. 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. Thus the yield strength of cold rolled steel is higher than that of hot rolled steel.

When you choose metals for a job it s important you know how the hot rolled and cold rolled steel are different. The difference between hot rolled and cold rolled steel is this recrystallization point. It s through a series of breakdown semi finishing sizing semi roughing roughing and finishing that cold rolled steel shapes can be created. Difference between hot rolled steel and cold rolled steel hot rolled steel.

Hot rolled steel sheets are used in fabrication work where aesthetics and quality are not very important. Hot rolled steel has a rough blue grey finish whereas cold rolled steel has a smooth grey finish. Whereas cold rolled steel sheets are used for precision and quality fabrication work. Hot rolling is a mill process which involves rolling the steel at a high temperature typically at a.

One important difference to understand is hot rolled steel and cold rolled steel. In hot rolled steel final rolling is done when the steel is hot. In cold rolled steel final rolling is done when the steel is cooled to the room temperature.