What Are The Mild Steel Plate S690QL heat treatment Properties

Gas cylinder S690QL heat treatment steel plate is used in welded gas cylinder and related products. BBN supplies gas cylinder steel with better anti-stress capability. Popular Steel standard and grades for cylinders steel mainly: EN10120 P245NB, P310NB, JIS G3116 SG255, S690QL heat treatment SG325, DIN17155 HI HII, 17Mn4, GB HP235, HP295, HP345.

Based on the principle of win-win and mutual benefit, the company operates in good faith, strictly controls the quality, and provides perfect after-sales service, which has won unanimous praise. The success of the company is not only the S690QL heat treatment hard work and wisdom of the company's employees, but also the deep love of the majority of consumers. It also inspires all employees of the company to have the courage to strive. We will continue to innovate and leap forward, create greater brilliance of the enterprise, and make our own contribution to the development of the S690QL heat treatment steel industry.

Most common S690QL heat treatment 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 S690QL heat treatment steel plates.

The effect of alloy elements on the properties of heat treatment methods for thick steel plate: the performance of heat treatment method reflects the difficulty coefficient level of heat treatment process and the tendency of defects caused by heat treatment process. The key points include cutting performance, over temperature sensitivity, quenching aging tendency and air oxidation carburizing tendency. S690QL heat treatment, Carbon steel has high machinability, and slow cooling method can be used in heat treatment, which can reduce the deformation and cracking tendency of the products. The addition of Mn and Si will increase the over temperature sensitivity of steel.

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