Q390B steel plate

Q390B steel plate 

　　Q390B steel plate use and application range:

　　Steel plates of this type are often used in various types of engineering machinery, such as drilling rigs, electric shovels, electric wheel reverse trucks, mining vehicles, excavators, loaders, bulldozers, various cranes, coal mine hydraulic pressure Manufacture and production of mechanical equipment such as brackets and other structural parts. It is also used in other industries, such as high-rise buildings, steel structure workshops, bridge engineering, and ship engineering.

　　Q390B steel plate characteristics: 

      Medium carbon quenched and tempered steel, cold heading die steel. The steel is easy to process, and can obtain certain toughness, plasticity and wear resistance after proper heat treatment. Normalizing can promote the spheroidization of the structure and improve the cutting performance of the hardness less than 160HBS rough. Tempering at a temperature of 550~570°C, the steel has excellent comprehensive mechanical properties. The hardenability of this steel is higher than that of 45 steel, and it is suitable for surface hardening such as high frequency quenching and flame quenching.

　　Q390B is applicable to GB/T 1591-2008 and GB/T 3274-2017 national standards.