P355M STEEL PLATE

With minimum 355 Mpa Yield strength,P355M,P355M steel plate,P355M steel sheet have to be under thermomechanically rolled when producing.As for the named of these steel plate P355M,P is short for steel for pressure vessels and boilers,the number 355 stand for the minimum yield point should be 355 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 P355M 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 P355M steel plate:

Thickness(mm)	Yield strength (≥Mpa)	Tensile strength (Mpa)	Elongation in ≥,%
T≤16	355	450-610	22
16<T≤40	355
40<T	345

►Chemical composition for P355M steel plate (Heat Analysis Max%)

Main chemical elements composition of P355M steel plate
C	Si	Mn	P	S	Al (total)	N
0.14	0.50	1.60	0.025	0.020	≥0.020	0.015
Mo	Nb	Ni	Ti	V	Cr+Cu+Mo
0.20	0.05	0.50	0.05	0.10	0.60