Hot rolled steel plate is different from cold rolled steel plate

The hot rolled sheet has low hardness, easy processing and good ductility.

The cold rolled sheet has high hardness and is relatively difficult to process, but is not easily deformed and has high strength.

Hot-rolled sheet has relatively low strength, poor surface quality (low oxidation/smoothness), but good plasticity, generally medium-thick plate, cold-rolled plate: high strength, high hardness, high surface finish, generally thin plate, can be used as stamping With the board.

Hot-rolled steel sheet, mechanical properties are far less than cold processing, second only to forging, but with good toughness and ductility

Cold-rolled steel sheet has a certain degree of work hardening, low toughness, but can achieve a good yield ratio, used for cold-bending spring pieces and other parts, and because the yield point is closer to the tensile strength, there is no danger during use. Predictability, prone to accidents when the load exceeds the allowable load

Supplement, cold rolled steel plate 0.3-3.0mm, hot rolled steel plate 2.0