S355G7+M is a structural grade steel supplied to the offshore industry. The material can be delivered as normalized (N) or thermo-mechanically rolled (M). Supplied in accordance with EN10225:2001, the steel offers good tensile and yield strength. As an offshore steel grade, S355G7+N;S355G7+M is used in a variety of applications including the building of offshore platforms.
Application: This grade steel for welded structural steels is used in the fabrication fixed offshore structures, mainly including shipbuilding and offshore platforms.
Thickness: 5-300mm, Width: 1500-4000mm, Length: 6000-15000mm
Rolling Type:Oil and offshore platform steel plate
S355G7+M steel mechanical properties
|
Grade |
Mechanical Properties (min) unless stated |
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|
Tensile Strength |
Yield Strength |
Elongation |
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|
Thickness (mm) |
Thickness t - mm |
||||||||
|
≤100 |
>100 |
≤16 |
16<t≤25 |
25<t≤40 |
40<t≤63 |
63<t≤100 |
100<t≤150 |
% |
|
|
S355G7+M |
470/630 |
– |
355 |
355 |
345 |
335 |
325 |
– |
22 |
Chemical composition for S355G7+M Platform steel (Ladle Analysis Max%)
|
Main chemical elements composition of S355G7+M |
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|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Nb+V |
Nb+V+Ti |
|
0.14 |
0.15-0.55 |
1.00-1.65 |
0.020 |
0.010 |
0.25 |
0.08 |
0.06 |
0.08 |
|
Ni |
Alt |
Cu |
N |
Nb |
Ti |
V |
Cr+Mo+Ni+Cu |
|
|
0.50 |
0.015-0.055 |
0.30 |
0.010 |
0.040 |
0.025 |
0.060 |
0.90 |
|
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