P355NH steel plate is under standard EN10028-3. P355NH Non-alloy elevated temperature quality steel belong to fine grained normalizing steel plate/sheet for boilers and Pressure Vessels steels.
Together with P355NH vessel steel plates, there are also other vessel steel under EN10028-3, including P275NH steel, P275NL1 grade, material P275NL2, P355N vessel steel plates, P355NL1 boiler steel, P355NL2 steel sheets, P460NH steel, grade P460NL1, P460NL2 pressure vessel steel.
According to temperature environment, EN10028-3 vessel steels are classified as below:
Room temperature quality vessel steel grade: P355N steel plates.
High temperature quality vessel steel grade: P355NH steel plates.
Low temperature quality grade: P355NL1 steel, P460NL1 steel plates.
Special low temperature quality grade: P355NL2 steel sheets, P460NL2 steel plates.
EN10028-3 steel tensile property:
P355N steel plates, P355NH steel plates, P355NL1 steel plates, P355NL2 steel plates, Thickness 8-260mm, Tensile strength Rm630-450MPa, Yield strength: 355-295MPa, Elongation after fracture 21-22%.
From above information, we can find that even the EN10028-3 P355NH steel plates and other EN10028-3 steel sheets are all for boilers and Pressure Vessels. Their temperature environment is totally different. Please choose EN10028-3 P355NH steel plates or other EN10028-3 steel sheets according to the vessel plates application environment.
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