Q390NB STEEL PLATE

In advantage of HSLA steel characteristics with plasticity,toughness,welding performance,Q390NB steel plate are better using than Common carbon structural steels.Adding some low alloy elements in common structural steels,we can get better properties high strength low alloy steels.

Technical Requirements & Additional Services for Q390NB steel plate:
♦ Normalising or Normalising Rolling heat treatment
♦ Cutting,Welding,Machining,Milling as per end user’s CAD drawing
♦ Shot blasting comply to SA 2.5 or SSPC and painting with shop primer
♦ More striction on some chemical elements contains for special applications
♦ Non-destructive inspection under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578 
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2 with ABS,LR,BV,DNV-GL,SGS

►Mechnical property for GB/T 1591-2018 Q390NB STEEL PLATE

Mechanical Property for Q390NB steel plate
	Thickness (mm)
Yield strength (≥Mpa)	T≤16	16<T≤40	40<T≤63	63<T≤80	80<T≤100	100<T≤150	150<T≤200	200<T
	390	380	360	340	340	320	310	300
Tensile strength (Mpa)	T≤100		100<T≤200			200<T
	490-650		470-620			470-620

►Chemical composition for GB/T 1591-2018 Q390NB STEEL PLATE (Heat Analysis Max%)

Main chemical elements composition of Q390NB
C	Si	Mn	P	S	Nb	V
0.20	0.50	0.90-1.70	0.035	0.035	0.01-0.05	0.01-0.20
Ti	Cr	Ni	Cu	Mo	N	Als Min.
0.006-0.05	0.30	0.50	0.40	0.10	0.015	0.015