Comparison of mechanical properties between Q245R steels and Q345R steels

Some mechanical properties of Q245R steels and Q345R steels are shown below. According to the following table, the allowable stress of Q345R steels at the same design temperature Compared with Q245R steels, manganese is always several tens of MPa larger, because manganese is the main alloy element added, and manganese is soluble in ferrite. The strength of manganese increases remarkably by the solid solution strengthening effect of manganese. Therefore, in some cases where the stiffness or stability is the determinant of vessel wall thickness, the advantages of Q245R steels in stiffness should not be overly emphasized. For example, the standard interpretation of literature points out that Sigma 6 is often the control cylinder.The determinant factor of wall thickness (SIGMA 6 is the cylinder circle at the edge of saddle without reinforcement ring).

 Partial mechanical properties of Q245R steels  and Q345R steels

Shanghai Katalor Enterprises, as a Q245R and Q345R steels Manufacturer , can supply Q245R and Q345R steels. We also can provide Q245R and Q345R steels machining services, so if you need Q245R and Q345R steels stock or machining parts , you can also contact katalor !