S420G1+QT STEEL PLATE

Oil and offshore platform used high strength S420G1+QT,S420G1+QT steel plate,S420G1+QT steel sheet is in steel standard EN 10225.For all thickness,oil and offshore steel plate S420G1+QT need to be done quenched and tempered.Now Xinsteel can offer the maximum thickness for S420G1+QT steel plates can reach 250mm with quenched and tempered heat treatment.The original mill test certificate shall be issued under format EN10204 3.1 or EN10204 3.2 if customer need the third party inspections.

Technical Requirements & Additional Services for S420G1+QT steel plate:
♦ Z TEST (Z15,Z25,Z35)
♦ Low temperature impacting test
♦ Ultrasonic test under EN 10160,ASTM A435,A577,A578
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands 

►Mechnical property for S420G1+QT steel plate:

Thickness (mm)
S420G1+QT steel plate	≤ 16	> 16 ≤ 40	> 40 ≤ 63	> 63 ≤ 80	> 80
Yield strength (≥Mpa)	420	400	390	380	380
	≤ 40		> 40
Tensile strength (Mpa)	500-660		480-640

►Chemical composition for S420G1+QT steel plate (Ladle Analysis Max%)

Main chemical elements composition of S420G1+QT steel plate
C	Si	Mn	P	S	Cr	Mo	Nb+V	Nb+V+Ti
0.14	0.15-0.55	1.65	0.020	0.010	0.25	0.25	0.09	0.11
Ni	Alt	Cu	N	Nb	Ti	V	Cr+Mo+Ni+Cu
0.70	0.015-0.055	0.30	0.010	0.040	0.025	0.080	0.90