EN10028-3 P355NL2 HIC Tested Steel Plate

The P355NL2 steel plate is a low-alloy high-strength steel plate belonging to the European standard pressure vessel steel, fully known as normalized weldable fine-grain steel plate.

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Product Description

EN10028-3 P355NL2 HIC Tested Steel Plate

The P355NL2 steel plate is a low-alloy high-strength steel plate belonging to the European standard pressure vessel steel, fully known as normalized weldable fine-grain steel plate. As stipulated in EN 10020, P355NL2 is an alloy steel with the numerical designation: 1.1106. Its steel quality grade is special low-temperature quality, classifying it as a type of European standard pressure vessel plate.

Grade Designation:

“P” is the initial letter of the English word “pressure”.
“355” refers to the yield strength value of the steel plate.
“N” indicates the hot-working condition.
“L2” denotes the temperature grade as Level 2.

Dimension Specifications:
Thickness: 8mm–150mm
Width: 1600mm–2500mm
Length: 6000mm–12000mm

1.What are the chemical composition and mechanical property of P355NL2 HIC Tested Steel Plate？

P355NL2 Chemical Composition
Grade	The Element Max(%)
Grade	C	Si	Mn	P	S	Al(min)	N
P355NL2	0.18	0.50	0.9-1.70	0.025	0.015		0.02
	Cr	Cu	Mo	Nb	Ni	Ti	V
	0.30	0.30	0.08	0.005	0.50	0.03	0.10

P355Q Mechanical Property

Grade	Thickness	Yield	Tensilme	Elongation	Impact Energy（KV J）min
P355NL2	（mm）	Min Mpa）	（Mpa）	（Min %）	-20°	0°	+20°
	≤ 16	355	490 – 630	22	65	90	100
	16 to ≤ 35	355	490 – 630	22	65	90	100
	35 to ≤ 50	345	490 – 630	22	65	90	100
	50+ to ≤ 70	325	490 – 630	22	65	90	100
	70+ to ≤ 100	315	470 – 610	21	65	90	100
	100+ to ≤ 150	295	450 – 590	21	65	90	100

2.What are the performance advantages of EN10028-3 P355NL2 HIC Tested Steel Plate？

High Strength: The P355NL2 steel plate has high yield strength and tensile strength, meeting the material strength requirements for special low-temperature environments.
Excellent Low-Temperature Toughness: This steel plate maintains good toughness at low temperatures, features outstanding cold impact toughness, and is less prone to brittle fracture.
Superior Corrosion Resistance: Through the addition of alloy elements and special treatments, the P355NL2 steel plate exhibits excellent corrosion resistance, adapting to various corrosive environments.
Good Workability: The steel plate can undergo various processing operations (e.g., cutting, bending, flanging, and welding) with excellent formability, satisfying diverse requirements in the manufacturing process.

3.What are the typical applications of EN10028-3 P355NL2？

Petroleum and Chemical Industries: Used for manufacturing reactors, heat exchangers, separators, spherical tanks, oil-gas tanks, liquefied gas tanks, and other equipment/components.
Power Station and Boiler Industries: Applied in critical components such as boiler drums, nuclear reactor pressure vessels, high-pressure water pipes for hydropower stations, and turbine scroll cases.
Other Industries: Suitable for manufacturing Class II/III pressure vessels and low-temperature pressure vessels, including single-layer rolled-welded vessels, multi-layer hot-jacketed rolled-welded vessels, and multi-layer wrapped vessels.

4.What are the equivalent steel grades of EN10028-3 P355NL2？

P355NL2 belongs to European standard low-temperature pressure vessel plates. As a European standard pressure vessel plate, it is close to China’s 16MnDR or the American standard material A662-C.

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