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P355NL1 steel vs P355NL2 steel

P355NL1 steel vs P355NL2 steel

P355NH, P355NL1 and P355NL2 steel grades  are pressure vessel steel material to EN10028-3 standard. They have good weldability and high resistance to brittle cracking. P355NL1 and P355NL2 steel plates are used by the world’s fabricators for the manufacture of pressure vessel tanks for the storage of pressurized gases.

P355NL1 steel and P355NL2 steel differences
NL1 – is ideal for use in low temperatures
NL2 – is ideal for use in especially low temperatures

Table 1: Chemical Composition of EN 10028–P355NL1/NL2


 

P355 NL1

P355 NL2

C

0.16

0.16

Si

0.40

0.40

Mn

0.80 to 1.50

0.80 to 1.50

P

0.025

0.020

S

0.015

0.010

Al

0.020

0.020

N

0.012

0.012

Cr

0.30

0.30

Cu

0.30

0.30

Mo

0.08

0.08

Nb

0.05

0.05

Ni

0.50

0.50

Ti

0.03

0.03

V

0.05

0.05

Table 2: Mechanical Properties of EN 10028 – P355NL1/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

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