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 |
Tensile Strength |
Elongation |
|
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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