S420G2+QT offshore structural steel is mainly used for offshore structures, designed to operate in the offshore sector but not to steels supplied for the fabrication of subsea pipelines, risers, process equipment, process piping, and other utilities.
Standard: EN 10225
Main Grades: S420G1+M, S420G2+M, S460G1+M, S460G2+M, S460G2+Q
Application: weldable structural steels for fixed offshore structures.
Delivery condition: supplied in the quenched and tempered rolled condition
EN 10225 specifies requirements for weldable structural steels to be used in the fabrication of fixed offshore structures in the form of plates up to and including 150 mm thick. It also specifies sections up to 63 mm thick except for sections delivered in the as-rolled condition which are permitted up to 25 mm thick only.
EN10225 S420G2+QT Steel Chemical Composition
|
Grade |
Chemical Composition |
|
S420G2+QT |
The Element Max (%) |
|
C |
Si |
Mn |
P |
S |
Nb |
V |
Ti |
Al |
Cr |
Ni |
Mo |
Cu |
N |
|
0.14 |
0.15
|
0.55 |
1.65 |
0.020 |
0.007 |
0.040 |
0.080 |
0.025 |
0.015
|
0.055 |
0.25 |
0.70 |
0.25 |
0.30 |
0.010 |
EN10225 S420G2+ QT Steel Mechanical Property
|
Grade |
Mechanical Property |
|
S420G2+QT |
Yield Strength
mm
Min(Mpa) |
Tensile Strength
mm
Min(Mpa) |
Elongation
Min,% |
|
|
|
≤
40 |
＞
40
≤
100 |
≤16 |
＞
16
≤
40 |
＞
40
≤
63 |
＞
63
≤
80 |
＞
80
≤
100 |
19 |
|
500-660 |
480-640 |
420 |
400 |
390 |
380 |
380 |
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