P690QL1 STEEL PLATE

High tensile strength P690QL1,P690QL1 steel plate,P690QL1 steel sheet are under steel standard EN 10028-6,pressure vessels steel plate P690QL1 belongs to Weldable fine grain steel and shall be done Quenched and Tempered heat treatment when rolling.Owning to these boiler steel plates P690QL1rolled under higher strength level,sometimes cold cracking can occur with increasing steel plates'thickness and strength,so our mill would provide our end users with the data on suitable welding conditions.

Technical Requirements & Additional Services for P690QL1 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 P690QL1 steel plate:

Thickness (mm)
P690QL1	≤ 50	> 50 ≤ 100	> 100
Yield strength (≥Mpa)	690	670	630
	≤ 100		> 100
Tensile strength (Mpa)	770-940		720-900

►Chemical composition for P690QL1 steel plate (Heat Analysis Max%)

Main chemical elements composition of P690QL1 steel plate
C	Si	Mn	P	S	B	N	Cr
0.20	0.80	1.70	0.020	0.010	0.005	0.015	1.50
Cu	Mo	Nb	Ni	Ti	V	Zr
0.30	0.70	0.06	2.50	0.05	0.12	0.15