Q690E low alloy steel welding properties and chemical element analysis

Q690E steel is a low alloy steel material with high yield and tensile strength. The welding performance of Q690E steel material refers to the bonding performance of welding materials together through a certain welding method or technique. The selection of welding rod is determined according to the strength and performance of the material, as is the welding process. Q690E low alloy steel has good welding performance.

When it comes to the performance of Q690E low alloy steel plate, the yield strength is ≥690; the tensile strength is 730-940; the elongation after fracture is ≥14; the impact energy is 31.

Q690E low alloy steel chemical composition: C≤0.18, Si≤0.6, Mn≤2.0, P≤0.03, S≤0.025, Ni≤0.8, Cr≤1.0, Mo≤0.3, Nb≤0.11, Ti≤0.02; P and S Elements are harmful elements of materials.

Q690E material is generally TMCP + tempered, quenched and tempered, and has higher strength. Compared with lower-level materials such as Q460E, the process of Q690E low alloy steel is a little more complicated, and the tensile yield strength is higher.