Q690D STEEL PLATE

GB/T 16270 Standard materials Q690D steel plate,Q690D steel sheet,Q690D metal plate with low temperature impact test can be used for large welding structural frames and parts.For guarantee mechaincal property of Q690D steel plate,for thickness above 40mm,Xinsteel Industrial suggest end users adding Ultrasonic examination when ordered.

Technical Requirements & Additional Services for Q690D steel plate:
♦ Quenching and tempering heat treatment
♦ Low temperature impacting test at -20 ℃
♦ Cutting and welding as per end user’s demands
♦ More striction on some chemical elements contains
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Ultrasonic test under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578 

►Mechnical property for GB/T 16270 Q690D steel plate:

Thickness(mm)	Yield strength (≥Mpa)	Tensile strength (Mpa)	Elongation in ≥, A %
T≤50	690	770-940	14
50<T≤100	650	760-930
100<T	630	710-900

►Chemical composition for GB/T 16270 Q690D steel plate (Heat Analysis Max%)

 

Main chemical elements composition of GB/T 16270 Q690D steel plate
C	Si	Mn	P	S	Cu	Cr
0.20	0.80	1.80	0.025	0.015	0.50	1.50
Ni	Mo	B	V	Nb	Ti	-
2.00	0.70	0.005	0.12	0.06	0.05	-