heavy steel sheet S690QL Vs 301 Stainless Steel

What is the difference between 20G and 20# steel grade? The difference between 20G and 20# steel is very big. The chemical elements, mechanical properties, service environment and price of 20G and 20# steel are very different. heavy steel sheet S690QL, 20G and 20# steel can not be compared. They are not of the same grade level, and can not be replaced by each other. 20# steel is high quality carbon structural steel, 20G steel is high pressure boiler steel. heavy steel sheet S690QL, 20# steel does not bear pressure, while the use temperature of 20G steel is 450~480℃.

A good heavy steel sheet S690QL, automobile steel plate material must have a certain elastic performance, otherwise it will affect the overall comfort performance and aesthetics of the car, especially in the process of driving on some uneven roads. The good quality automobile steel plate can play a certain role in shock absorption, make the driver driving more comfortable. Especially for some drivers with long running length, it can reduce driving fatigue. The high-strength automobile steel plate is stronger in material, and it is more solid and firm when used in the overall frame and other parts of automobile manufacturing, which also improves the quality of the entire automobile.

Most common heavy steel sheet S690QL steel plates are rolled by hot rolling or controlled rolling. Compared with the general hot rolling process, the advantages of controlled rolling are: the strength and low temperature toughness of steel plates are greatly improved by controlled rolling to refine grains. In addition, the controlled rolling process can give full play to the role of Microalloying Elements Nb, V and Ti, not only play a role of precipitation strengthening, but also refine the grains, and improve the toughness of the rolled heavy steel sheet S690QL steel plates.

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