Difference Between Hot And Cold Sheet Steel

Whereas cold rolled steel sheets are used for precision and quality fabrication work.

Difference between hot and cold sheet steel.

In cold rolled steel final rolling is done when the steel is cooled to the room temperature. Thus the yield strength of cold rolled steel is higher than that of hot rolled steel. 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.

Hot rolled steel sheets are used in fabrication work where aesthetics and quality are not very important. In hot rolled steel final rolling is done when the steel is hot. Cold rolled has sharper corners and more precise dimensions than hot rolled. In comparison a cold rolled steel product with the same chemical composition has a yield strength of 365 mpa.

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 difference is not in their specifications or grade but in how they are processed at a mill. Difference between hot rolled steel and cold rolled steel hot rolled steel. The difference between hot rolled and cold rolled steel is this recrystallization point.

When you choose metals for a job it s important you know how the hot rolled and cold rolled steel are different. As an example a hot rolled steel product may have a yield strength of 235 mpa. Compared to hot rolled steel cold rolled steel has a nearly 20 increase in strength through the use of strain hardening. Hot rolled steel comes with a scaly surface slightly rounded edges and corners and the surface is non oily.

Cold rolled steel is essentially hot rolled steel that has had further processing. The rolls induce plastic deformation. Cold rolled has a smooth and shiny finish while hot rolled has a grey and scaly finish. Hot rolled steel has a rough blue grey finish whereas cold rolled steel has a smooth grey finish.

Cold rolling steel allows for the creation of very precise shapes. It s through a series of breakdown semi finishing sizing semi roughing roughing and finishing that cold rolled steel shapes can be created. The basic difference between. For example consumer electronics and telecom products metal furniture automobile industry etc.

One important difference to understand is hot rolled steel and cold rolled steel. For example railway track automotive frames structural frames low accuracy sheet metal parts etc. Cold rolling is done when the metal is able to form new grains as the old ones are deformed by rolling and bending the metal.