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P355NH steel grade is one of grade in En10028-3, which is non alloy and alloy steels with specified elevated temperature properties. P355NH steel plate is typically used in boiler and pressure vessels in a variety of industrial uses. Many use cases are found in the oil and gas and petrochemical industries.


P355NH grades are used for manufacturing boilers, pressure vessels and pipes transporting hot liquids and pressure vessels such as petroleum, chemical industry, power plants.

Chemical composition %   of grade   P355NH (1.0565):   EN 10028-3-2009

According EN 10222-4 chemical composition: C < 0.2; 0.1 < Si < 0.5; 0.9 < Mn < 1.65; Ni < 0.3; 0.02 < Al < 0.06
C Si Mn Ni P S Cr Mo V N Nb Ti Al Cu -
max   0.18 max   0.5 1.1 - 1.7 max   0.5 max   0.025 max   0.015 max   0.3 max   0.08 max   0.1 max   0.012 max   0.05 max   0.03 max   0.02 max   0.3 Nb+Ti+V < 0.12

Mechanical properties of grade   P355NH (1.0565)

Nominal thickness (mm):   to 60 60 - 100 100 - 150 150 - 250
Rm - Tensile strength (MPa) (+N) 490-630 470-610 460-600 450-590

Equivalent steel grade of P355NH

Equivalent steel grade of P355NH
Europe Belgium Germany France Italy Sweden India Japan
    W St E355 A52 AP Fe510-2-KW SS 21,07,01    

EN10028-3 P355NH boiler steel plates with good mechanical property and correct mechincal composition.For gurantee the stock quality,we offer the original mill test certificates along with stock steel plates.If you need this kind of steel plate,please contact us for more information by email [email protected] .we will reply you with detail info as soon as possiable!

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