Q460CFD-Z15 Z25 Z35 steel plate execution standard and welding performance

Q460CFD-Z15, Q460CFD-Z25 and Q460CFD-Z35 steel plates are low welding crack susceptibility steel plates.

Chemical mass fraction of Q460CFD-Z15, Q460CFD-Z25, Q460CFD-Z35 steel plates:
C≤0.09, Si≤0.5, Mn≤1.8, P≤0.015, S≤0.008, Ni≤1.5, Cr≤0.5, Mo≤0.5, Nb≤0.1, V≤0.08, Ti≤0.05, B≤0.003, Pcm Max ≤0.20

Mechanical function of Q460CFD-Z15, Q460CFD-Z25, Q460CFD-Z35 steel plate heat treatment: TMCP, TMCP + tempering or quenching and tempering

The surface quality requirements of Q460CFD-Z15, Q460CFD-Z25, and Q460CFD-Z35 steel plates are specified in the standard. The trademark states: Q is yield; 460 is yield strength value; CF is low welding crack sensitivity; D is the quality grade; Z15, Z25, Z35 is the thickness direction function.