STEEL FOR HIGH TEMPERATURES

P355NL2

P355NL2 pressure vessel steel sheets comply with EN 10028-3 and are designed for pressure equipment operating under demanding conditions. This steel grade combines high mechanical strength, excellent toughness at low temperatures and outstanding weldability. These properties make it suitable for pressure vessels, boilers, heat exchangers, storage tanks and equipment used in the energy, chemical and petrochemical industries. The NL2 quality ensures reliable performance even in severe operating environments.

Sidastico supplies cut-to-size steel sheets processed from hot-rolled material in a wide range of thicknesses and dimensions. The company cuts every sheet according to customer specifications, reducing material waste and improving manufacturing efficiency. Sidastico also provides the EN 10204 3.1 inspection certificate with every delivery, ensuring full traceability and compliance with the declared mechanical and chemical properties.

P355NL2 pressure vessel steel sheets are suitable for laser cutting, plasma cutting, oxy-fuel cutting, bending, drilling and welding. Manufacturers use this grade for pressure vessels, cryogenic tanks, pipelines, industrial equipment, gas processing systems and components operating at low temperatures. Its excellent toughness provides long-term safety, reliability and consistent performance.

Compared with standard pressure vessel steels, this material delivers improved low-temperature properties while maintaining excellent fabrication and welding characteristics. It is therefore an ideal solution for applications requiring high safety standards and dependable mechanical performance.

Sidastico combines extensive stock availability with precision cut-to-size processing, certified quality and reliable deliveries. Customers benefit from steel sheets designed for pressure equipment and supported by fast, dependable service.

Technical Characteristics:

Standard

EN10028-3

Identification Number

1.1106

Classification

–

Type

–

Rolling State

Normalised

Brief Description

Fine-grain structural steel for pressure vessels.
Good weldability and good cold and hot-rolling properties under normalised conditions.

Applications

Fine-grain, high-resistance structural steel for pressure vessels.

Standard Coil Stock Range

P355NL2	1500	2000
3	●
4	●
5	●	●
6	●	●
8	●	●
10	●	●
12	●	●
15	●

Chemical Composition

Regulatory standard

Element	Value
C (%)	≤ 0,18
Si (%)	≤ 0,50
Mn (%)	1,10-1,70
P (%)	≤ 0,020
S (%)	≤ 0,005
AI (%)	≥ 0,020
Nb (%)	≤ 0,05
Ti (%)	≤ 0,03
V (%)	≤ 0,10
Mo (%)	≤ 0,08
Cu (%)	≤ 0,30

Element	Value
Cr (%)	≤ 0,30
Ni (%)	≤ 0,50
N (%)	≤ 0,012
B (%)
Nb+Ti+V (%)	≤ 0,12
Cr+Mo+Ni (%)
Ni+Cr+Cu+Mo (%)
C.E.V. (%)	≤ 0,43*

* = for thicknesses in mm ≤ 60
C.E.V. (%) = C+(Mn/6)+[(Cr+Mo+V)/5]+[(Ni+Cu)/15]

Mechanical Properties

According to UNI EN 10028

Mechanical characteristics	Direction	Thicknesses	Values
R_e (MPa)	T	≤ 16	≥ 355
R_e (MPa)	T	> 16 ≤ 40	≥ 345
R_m(MPa)	T	≤ 16	490-630
R_m(MPa)	T	> 16 ≤ 40	490-630
A₈₀(%)	T		≥ 18
A₅ (%)	T		≥ 22
Bend Test 180°
KV 20°C (J)	L	≤ 250	≥ 85*
KV 20°C (J)	T	≤ 250	≥ 70*
KV 0°C (J)	L	≤ 250	≥ 75*
KV 0°C (J)	T	≤ 250	≥ 60*
KV -20°C (J)	L	≤ 250	≥ 55*
KV -20°C (J)	T	≤ 250	≥ 40*
KV -40°C (J)	L	≤ 250	≥ 45*
KV -40°C (J)	T	≤ 250	≥ 30*
KV -50°C (J)	L	≤ 250	≥ 42*
KV -50°C (J)	T	≤ 250	≥ 27*

* = Standard option
t = thickness in mm of the test piece for the bend test
L = Tensile testing carried out on longitudinal test pieces
T = Bend tests carried out on cross-cut test pieces

Tolerances

Tolerances on the dimensions and on the shape UNI EN 10051
Surface condition UNI EN 10163-2

Certifications

EN 10204-3.1

DISCLAIMER: SIDASTICO S.p.A. declines any and all liability for the accuracy and precision of the information herein and reserves the right to modify any part without advanced notice.

STEEL FOR HIGH TEMPERATURES

P355NL2

Technical Characteristics:

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