P355QL1 STEEL PLATE

Under steel specification EN 10028-6,P355QL1,P355QL1 steel plate,P355QL1 boiler plate shall be done heat treatment with Quenching and Tempering.For impacting test,the deviating from EN 10028-1,the preparation of test pieces sample taken from middle thickness may be agree at the the time of inquiry and making purchasing orders.In this case,test temperatures and minimum impact energy values shall be agreed.Pressure vessel steel plate P355QL1 shall be done impacting test at minus 40 centi degree low temperature.

Technical Requirements & Additional Services for P355QL1 steel plate:
♦ High tension test
♦ Low temperature impacting test
♦ Simulated post-welded heat treatment (PWHT)
♦ 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 P355QL1 steel plate:

Thickness (mm)
P355QL1	≤ 50	> 50 ≤ 100	> 100
Yield strength (≥Mpa)	355	335	315
	≤ 100		> 100
Tensile strength (Mpa)	490-630		450-590

►Chemical composition for P355QL1 steel plate (Heat Analysis Max%)

Main chemical elements composition of P355QL1 steel plate
C	Si	Mn	P	S	B	N	Cr
0.16	0.40	1.50	0.020	0.010	0.005	0.015	0.30
Cu	Mo	Nb	Ni	Ti	V	Zr
0.30	0.25	0.05	0.50	0.03	0.06	0.05