P420M STEEL PLATE

With minimum 420 Mpa Yield strength,Pressure vessel steel plate P420M shall be under thermomechanically rolled when producing.As for the named of these steel plate P420M,P is short for steel for pressure vessels and boilers,the number 420 stand for the minimum yield point should be 420 Mpa for this steel,M is short for the heat treatment of thermomechanically rolling and do low temperature impacting test at minus 20 centi degree.

Technical Requirements & Additional Services for P420M 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 P420M steel plate:

Thickness(mm)	Yield strength (≥Mpa)	Tensile strength (Mpa)	Elongation in ≥,%
T≤16	420	500-660	19
16<T≤40	400
40<T	390

►Chemical composition for P420M steel plate (Heat Analysis Max%)

Main chemical elements composition of P420M steel plate
C	Si	Mn	P	S	Al (total)	N
0.16	0.50	1.70	0.025	0.020	≥0.020	0.020
Mo	Nb	Ni	Ti	V	Cr+Cu+Mo
0.20	0.05	0.50	0.05	0.10	0.60