EN 10028 – P355 NH/NL1/NL2

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

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

(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 NH	P355 NL1	P355 NL2
C	0.18	0.16	0.16
Si	0.50	0.40	0.40
Mn	1.10 to 1.70	0.80 to 1.50	0.80 to 1.50
P	0.025	0.025	0.020
S	0.015	0.015	0.010
Al	0.020	0.020	0.020
N	0.012	0.012	0.012
Cr	0.30	0.30	0.30
Cu	0.30	0.30	0.30
Mo	0.08	0.08	0.08
Nb	0.05	0.05	0.05
Ni	0.50	0.50	0.50
Ti	0.03	0.03	0.03
V	0.05	0.05	0.05

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