With minimum 355 Mpa Yield strength,Pressure vessel steel plate P355M 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.

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P355M EN10028 Pressure Vessel Steel Plate Descriptions:

EN10028-5 standard specification for weldable fine grain steels, thermomechanically rolled.
EN10028-5 covers the steel grades given in three qualities:
a) the basic series (P...M)
b) series with low temperature properties down to -40 °C (P...ML1);
c) series with low temperature properties down to -50 °C (P...ML2).

Thickness: 6MM to 300MM,
Width: 1500mm to 4050mm,
Length: 3000mm to 15000mm

Chemical Composition and Mechanical Properties:

EN10028-5 P355M Chemical Composition
Grade	The Element Max (%)
Grade	C	Si	Mn	P	S	Al	N
P355M	0,14	0,50	1,60	0,025	0,020	0,020	0,015
	Nb	V	Ti	Ni	Mo
	0,05	0,10	0,05	0,50	0,20

Grade	P355M Mechanical Property
Grade	Thickness	Yield	Tensile	Elongation
P355M	mm	Min Mpa	Mpa	Min %
	6-16	355	450-610	22%
	16-40	355	450-610	22%
	40-63	345	450-610	22%

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Shandong Chengshun Metal Materials Co., Ltd. is located in Jinan City, Shandong Province. It is a comprehensive company dealing in high-quality steel products, with a superior geographical location and very convenient transportation. The company has a complete and scientific quality system, and has been recognized by the industry for its integrity, strength and product quality.

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Boiler Pressure Vessel Steel