P355N steel is a room temperature quality grade weldable fine grain steel under EN10028-3 standard. Room temperature quality grade P355N steel is widely used in petroleum, chemical, power station, boiler and other industries, also used in the production of reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, liquefied petroleum gas cylinders, hydropower stations High-pressure water pipes, turbine casings and other equipment and components.
Standard: EN10028-3 European standard, full name: Normalized weldable fine grain steel plate.
Steel quality level to EN10028-3 weldable fine grain steel:
Room temperature quality grade P355N
High-temperature quality grade p355nh
Low-temperature quality grade P355NL1, P460NL1
Special low-temperature quality grades P355NL2 and P460NL2 Tensile properties at room temperature:
P355N, P355NH, P355NL1, P355NL2 Thickness 8-260mm
Tensile strength Rm630-450MPa, Yield strength: 355-295MPa, Elongation after fracture 21-22%
Evaluation of resistance to hydrogen-induced cracking:
The evaluation test for the resistance to hydrogen-induced cracks of steel plate products shall be carried out in accordance with EN10229. A test solution (PH 3) or B test solution (PH 5) and the corresponding acceptance standards can be selected.
Quality P355N HIC test acceptance level:
Acceptance grade is divided into grade I, grade II and grade III,
CLR% crack length ratio, CTR% crack thickness ratio, CSR% crack sensitivity ratio.
EN10028-3 P355NH steel plates are exported to countries below:
Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland, United Kingdom.
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