Q460qE steel plate for bridge

Q460qE steel material description:
Q stands for yield strength
460 represents the yield strength value
q means bridge use
E is the quality level, representing -40 degree impact

The implementation standard of Q460qE is GB/T 714, and the heat treatment process is: thermomechanical rolling (TMCP), quenching and tempering.

Q460qE steel plate Z-direction representation method: Q460qE-Z15, Q460qE-Z25, Q460qE-Z35.

Chemical composition of Q460qE steel plate:

C	Si	Mn	Nb	V	T	As	Cr	Ni	Cu	Mo	N
≤0.11	≤0.55	1.0-1.7	0.01-0.09	0.01-0.08	0.006-0.03	0.01-0.045	0.5	0.3	0.3	0.25	≤0.008

Mechanical properties of Q460qE steel plate:

Grade	Yield strengthReL(N/mm2)			Tensile strength Rm/(N/mm2)	Elongation A/%	Impact energy (longitudinal) Akv/J
	Thickness/mm
	≤50	>50-100	>100-150			Temperature	Not less than
Q460qE	≥460	≥450	-	≥570	≥18	-40	120

In terms of performance, Q460qE steel plate has higher yield tensile strength, higher elongation and higher impact energy value.

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