P355NH, P355NL1, P355NL2 Pressure Vessel Steel plate

 P355NH, P355NL1, P355NL2 Pressure Vessel Steel plate

1.Pressure Vessel Steel Home Page

EN 10028

P235GH | P265GH | P295GH | P355GH | P275 NH/NL1/NL2 | P355 NH/NL1/NL2

P460 NH/NL1/NL2

2.P355NH, NL1 & NL2 – pressure vessel steels used by the worlds leading fabricators supplying the oil and gas industry. A pressure vessel steel grade with good weld ability 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 pressurized gases.

3.Other grade types include…

NL1 – is ideal for use in low temperatures

NL2 – is ideal for use in especially low temperatures

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

Please refer to the data tables below for more information.

4.Table 1: Chemical Composition of EN 10028 P355 NH, P355 NL1 & P355 NL2

Element P355NH P355NL1 P355NL2 Element P355NH P355NL1 P355NL2
Carbon (C)
max.
0.18 0.18 0.18 Silicon (Si)
max.
0.50 0.50 0.50
Manganese (Mn) 1.10 to 1.70 1.10 to 1.70 1.10 to 1.70 Phosphorous (P)
max.
0.025 0.025 0.020
Sculpture (S)
max.
0.015 0.015 0.010 Chromium (Cr)
min.
0.30 0.30 0.30
Molybdenum (Mo)
max.
0.08 0.08 0.08 Nickel (Ni)
max.
0.50 0.50 0.50
Niobium (Nb)
max.
0.05 0.05 0.05 Titanium (Ti)
max.
0.03 0.03 0.03
Vanadium (V)
max.
0.10 0.10 0.10 Nitrogen (N)
max.
0.012 0.012 0.012
Aluminum (Al)
max.
0.020 0.020 0.020 Copper (Cu)
max.
0.30 0.30 0.30

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

5.Table 2: Mechanical Properties of EN 10028 P355 NH, P355 NL1 & P355 NL2

Grade Type Thickness
(mm)
Yield Strength
MPa (min)
Tensile Strength
MPa
Elongation
% (min)
P355 NH
P355 NL1
P355 NL2
Normalized ≤ 16
16> to ≤40
40> to ≤60
60> to ≤100
100> to ≤150
150> to ≤250
355
345
335
315
305
295
490 to 630
490 to 630
490 to 630
470 to 610
460 to 600
450 to 590
21
21
21
21
21
21

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

6.To find out more about P355 NH, NL1 & NL2 and to receive a competitive quotation for the supply of this material, please to contact us.