Hot rolled S690QL density vs stainless steel

Q690D material is a Chinese standard high-strength welded structural steel. What does Q690D stand for? Q represents the yield strength, 690 represents the yield strength value, and D represents the quality of the Q690 steel. The quality grades are A, B, C, D, and E, respectively. The impact of Grade D steel plate is﹣20°C. Q690D executive standard: GB / T1591-2008. S690QL density, Q690D steel has high yield strength and tensile strength.

Alloy steel plate is formed by adding alloy elements into steel. In this process, the basic elements of steel, namely iron and carbon, will have a certain effect with the newly added alloy elements. Under this effect, the structure and material in the steel will have certain changes, and the overall performance and quality of steel will also be improved. Therefore, the output of S690QL density, alloy steel plate is increasing, and its application range is more and more extensive.

The main applications of normalizing are as follows:① For low carbon steel, S690QL density. The hardness of low carbon steel after normalizing is slightly higher than that after annealing, and the toughness is also better, so normalizing can be used as the pretreatment of cutting.② For medium carbon steel, normalizing can be used as the final heat treatment instead of quenching and tempering treatment, or as the preparation treatment before surface quenching by induction heating.③ Normalizing can be used in tool steel, bearing steel, carburizing steel and so on, which can eliminate or inhibit the formation of network carbide, thus obtaining the good microstructure needed for spheroidizing annealing.④ Normalizing can refine the cast structure and improve the machinability of steel castings.

Customer first, reputation first, high-quality and perfect after-sales service is the extension of our product value and an important guarantee for the interests of customers. The purpose of our S690QL density service quality management system is to establish and constantly improve a scientific, reasonable and efficient service quality management system, and complete the after-sales service quality guarantee work of customers fairly, accurately and timely, For our company's S690QL density customer service to establish a good, comprehensive, full service system.