Brief introduction of Q390GJC-Z35 steel plate

Q390GJC-Z35 steel plate is a low-alloy high-strength steel. Q390GJC-Z35 steel is suitable for manufacturing high-rise building structures, long-span structures and other important building structures with steel plates with a thickness of 6-100mm.

Q390GJC-Z35 steel plate mechanical properties:

Thickness (mm)	Mechanical properties
6-16	ReH(MPa)	≥390
	Rm(MPa)	490-650
	A(%)	≥20
	Impact temperature(℃)	0
	Akv(J)	≥34
	Bending Diameter	2a
	Bending angle(℃)	180
	Remark	ReH/Rm≤0.85；Delivery status: hot rolling, normalizing, normalizing rolling, normalizing + tempering, TMCP
>16-35	ReH(MPa)	390-510
	Rm(MPa)	490-650
	A(%)	≥20
	Impact temperature(℃)	0
	Akv(J)	≥34
	Bending Diameter	3a
	Bending angle(℃)	180
	Remark	ReH/Rm≤0.85；Delivery status: hot rolling, normalizing, normalizing rolling, normalizing + tempering, TMCP
>35-50	ReH(MPa)	380-500
	Rm(MPa)	490-650
	A(%)	≥20
	Impact temperature(℃)	0
	Akv(J)	≥34
	Bending Diameter	3a
	Bending angle(℃)	180
	Remark	ReH/Rm≤0.85；Delivery status: hot rolling, normalizing, normalizing rolling, normalizing + tempering, TMCP
>50-100	ReH(MPa)	370-490
	Rm(MPa)	490-650
	A(%)	≥20
	Impact temperature(℃)	0
	Akv(J)	≥34
	Bending Diameter	3a
	Bending angle(℃)	180
	Remark	ReH/Rm≤0.85；Delivery status: hot rolling, normalizing, normalizing rolling, normalizing + tempering, TMCP

Q390GJC-Z35 steel plate chemical elements, finished product melting analysis:

C	Si	Mn	P	S	Ni
≤0.2	≤0.55	≤1.6	≤0.025	≤0.015	≤0.7
Cr	Cu	Nb	V	Ti	Als
≤0.3	≤0.3	0.015-0.06	0.02-0.2	0.010-0.03	≥0.015

Remarks for composition: Cr and Cu are residual elements; Alt can be used instead of Als, at this time Alt≥0.02; to improve performance, one or several alloying elements of Nb, V and Ti can be added as needed; V+Ti+Nb≤0.22. Ceq = C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 Pcm=C+Si/30+(Mn+Cu+Cr)/20+Ni/60+Mo/15 +V/10+5B