EN 10028 – P355 NH/NL1/NL2

A pressure vessel steel grade with good weldability and high resistance to brittle cracking, P355NH is used by the world’s fabricators for the manufacture of pressure vessel tanks for the storage of pressurised gases.
Other grade types include…

  • NL1 – is ideal for use in low temperatures
  • NL2 – is ideal for use in especially low temperatures

P355NH is a normalised steel grade with a minimum yield strength of 275-460 N/mm² and plates are available ex–stock from our warehouse.

Table 2: Mechanical Properties of EN 10028 – P355 NH/NL1/NL2

GradeTypeThickness (mm)Yield Strength
MPa (min)
Tensile Strength
MPa
Elongation
% (min)
P355 NHNormalized≤ 16355490 - 63021
P355 NL116> to ≤40345490 - 63021
P355 NL240> to ≤60335490 - 63021
60> to ≤100315470 - 61021
100> to ≤150305460 - 60021
150> to ≤250295450 - 59021

(Please note: the technical information above is for guidance only – for exact specifications please check with our Sales Team)

Table 1: Chemical Composition of EN 10028 – P355 NH/NL1/NL2

 P355 NHP355 NL1P355 NL2
C0.180.160.16
Si0.500.400.40
Mn1.10 to 1.700.80 to 1.500.80 to 1.50
P0.0250.0250.020
S0.0150.0150.010
Al0.0200.0200.020
N0.0120.0120.012
Cr0.300.300.30
Cu0.300.300.30
Mo0.080.080.08
Nb0.050.050.05
Ni0.500.500.50
Ti0.030.030.03
V0.050.050.05

(The combined quantities of Niobium, Titanium and Vanadium should be 0.12% max.)