Hot Rolled Coil
It is a mill process that involves rolling the steel at a high temperature, which is above
the steel’s recrystallization temperature. Hot rolled is also used for truck frames and automobile seat frames. For this application, the metal typically goes through the processes of pickle and oiling (P&O) before it is used to help prevent rusting and allow for painting.
Cold rolled has a tensile strength of 85,000 psi while hot-rolled steel has 67,000 psi.