Hot rolled steel typically requires much less processing than cold finished steel, making it much cheaper. Since hot rolled steel can cool at room temperature, it's free from the internal stresses arising from quenching or work-hardening processes.
Hot rolled steel is ideal when dimensional tolerances
are less critical, material strength is required, and the surface finish isn't a primary concern. In cases where the surface finish is essential, the scaling can be removed by grinding, sandblasting, or acid-bath pickling. After removing the scaling, the descaled steel surface offers a better surface for painting and other surface coatings.