Chemical composition and mechanical properties of Q460GJC-Z35/Q460GJD-Z35 steel

Q460GJC-Z35/Q460GJD-Z35 steel plates are mainly used in the construction of high-rise and important building structures. They are required to have high impact toughness, sufficient strength, good welding performance, a certain yield ratio, and if necessary, the thickness direction performance. That is, the Z-direction properties Z15/Z25/Z35 are added after the steel plate.

Chemical composition of Q460GJC-Z35 and Q460GJD-Z35 steel plates:
C≤0.2, Si≤0.55, Mn≤1.7, P≤0.025, S≤0.015, Ni≤1.2, Cr≤1.2, Mo≤0.5, Cu≤0.5, Nb≤0.11, V≤0.2, Ti≤0.03, Als≥ 0.015.

Q460GJC-Z35, Q460GJDZ35 high construction steel mechanical properties:
Tensile strength σb (MPa): ≥550
Yield strength σs (MPa): ≥460
Elongation δ5 (%): ≥17
Area shrinkage ψ (%): ≥40
Impact energy (longitudinal) Akv (J): ≥34
Yield ratio: ≥0.85

Q460GJC-Z35 and Q460GJD-Z35 are special killed steel plates for high-strength building structures, referred to as high-level construction steel. The Q460GJC-Z35/Q460GJD-Z35 steel plate thickness of the steel mill can reach 120mm.