P355NL2 Weldable fine-grain structural steel for pressure vessels
P355NL2 is a kind of weldable normalized fine grained pressure vessel steels under the EN10028-3 standard,its material is 1.1106 with good weldability and high resistance, which used for pressure purpose.
Usage
These fine-grain structural steel grades are characterised by a minimum yield strength of 275-460 N/mm2, by good weldability and high resistance to brittle cracking. These grades are used above
all for manufacturing vessels for pressurised gas (LPG, butane and propane tanks),pressure vessels, steam boiler parts, pressure piping, compressors ect.
This fine-grain strucutral steel grades rolled under normalised conditions offer good cold-forming and hot-forming properties without negatively affecting the material properties.
Notch Impact energy
Minimum value of notch impact energy [J] at a test temperature of [°C]
|
°C
|
Longitudinal [J]
|
Transverse[J]
|
|
+20°C
|
≥85J
|
≥70J
|
|
0°C
|
≥75J
|
≥60J
|
|
-20°C
|
≥55J
|
≥40J
|
|
-40°C
|
≥45J
|
≥30J
|
|
-50°C
|
≥42J
|
≥27J
|
|
C
|
Si
|
Mn
|
P
|
S
|
N
|
Cu
|
Ni
|
Ti
|
V
|
Nb
|
Al
|
|
0.18
|
0.50
|
1.10-1.70
|
0.02
|
0.01
|
0.012
|
0.30
|
0.50
|
0.03
|
0.10
|
0.05
|
0.02
|
|
Yield Strength(MPa)
|
Total Elongation.min
|
|
|
≤16 mm 355
|
490-630
|
22%
|
|
>16mm 345
|
Source:
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