What we usually refer to as steel plates for stamping auto parts refers to thin steel plates (strips); the so-called thin steel plates refer to steel plates with a thickness of less than 4mm, which are divided into hot-rolled plates and cold-rolled plates.
Cold-rolled thin steel plate is the abbreviation of ordinary carbon structural steel cold-rolled plate, commonly known as the cold plate. It is a hot-rolled strip of ordinary carbon structural steel, which is further cold-rolled into a steel plate with a thickness of less than 4mm. Due to rolling at room temperature, no iron oxide scale is produced. Therefore, the cold plate has the good surface quality and high dimensional accuracy. With the addition of an annealing treatment, its mechanical properties and process properties are superior to hot-rolled thin steel plates. In many fields, especially In the field of home appliance manufacturing, it has gradually replaced hot-rolled steel sheets.
Because the comprehensive mechanical properties of Q235 steel, such as strength, plasticity, toughness, and weldability, are the best among ordinary carbon structural steels, it can better meet the general use requirements, so the application range is very wide.
Like cold-rolled ordinary steel sheets, cold-rolled high-quality carbon structural steel sheets are also the most widely used cold-rolled steel sheets. Cold-rolled high-quality carbon thin steel plate is made of high-quality carbon structural steel, which is cold-rolled into a thin plate with a thickness of less than 4mm.