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The Difference Between Hot Rolled And Cold Rolled Stainless Steel

Dec 29, 2021

The difference between hot rolled and cold rolled stainless steel

Stainless steel rolling is divided into cold rolling and hot rolling, and the recrystallization temperature is the distinguishing point.

Hot Rolled:

  • The toughness and surface smoothness are poor, and the price is low;

  • The temperature of hot rolling is similar to that of forging;

  • The hot plate is processed by hot rolling, and the surface has oxide skin, and the thickness of the plate is poor;

  • The price and use of hot rolled products are much more extensive than cold rolled products;

  • The mechanical properties of hot-rolled steel sheets are far inferior to cold working and inferior to forging processing, but they have better toughness and ductility;

  • The surface of the non-plated hot-rolled board becomes dark brown;

  • It can be distinguished from the smoothness of the surface after electroplating, and the smoothness of the hot-rolled plate is low;

Cold Rolled:

  • Good stretchability and toughness, but the price is more expensive;

  • The cold-rolled surface has no oxide scale and good quality;

  • Cold rolling is generally used to produce strip, and its rolling speed is relatively high;

  • The thickness accuracy of cold rolling is higher than that of hot rolling, and the mechanical properties and surface are all above the hot rolling;

  • The cold-rolled steel plate has a certain degree of work hardening and low toughness, but it can achieve a better yield ratio. It is used for cold-formed spring sheets and other parts;

  • Since the yield point of the cold plate is closer to the tensile strength, there is no foreseeability of the danger during use, and accidents are prone to occur when the load exceeds the allowable load.

  • The surface of the non-plated cold rolled board is gray.

  • The surface smoothness of cold rolled plate after electroplating is higher than that of hot rolled plate.