P690QH STEEL PLATE

With the minimum yield strength at 690 Mpa for steel thickness equal and belows 50mm,Weldable fine grain P690QH,P690QH steel plate,P690QH steel sheet is mainly used to manufacture liquid boilers and pressure vessels&tanks in heavy industry all over the world.For improving the steel welding properity, excessive post weld heat treatment conditions can decrease the mechanical properties.So our engineers recommended that the end user would like to add this test PWHT as an additional technical terms when they purchase boiler steel plate p690qh.

Technical Requirements & Additional Services for P690QH 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 P690QH steel plate:

Thickness (mm)
P690QH	≤ 50	> 50 ≤ 100	> 100
Yield strength (≥Mpa)	690	670	630
	≤ 100		> 100
Tensile strength (Mpa)	770-940		720-900

►Chemical composition for P690QH steel plate (Heat Analysis Max%)

Main chemical elements composition of P690QH steel plate
C	Si	Mn	P	S	B	N	Cr
0.20	0.80	1.70	0.025	0.015	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