S355G7
S355G7+N ; S355G7+M Steel Plate
Supplied in accordance with EN10225:2001
Nearest Equivalent Grade : API 2H Grade50; API 2W Grade50; API 2WGrade50T, BS7191:1989 355EM;
Werkstoff 1.8808+N;1.8808+M
Typical Application : Primary Structure
S355G7 offer good tensile and yield strength structural grade steel used by the offshore industry.
The material can be delivered as S355G7+N (N= Normalized) or SG355G7+M (M= Thermo-Mechanically Rolled).
As an offshore steel grade, S355G7+N;S355G7+M is used in a variety of applications including the building of offshore platforms.
EN 10225 : S355 Grades Chemical Composition (ladle and product analysis / wt%) (1)
C max.
|
Si
|
Mn
|
S
max.
|
P
max.
|
Cr
max.
|
Mo
max.
|
Nb
max.
|
V
max.
|
Ti
max.
|
Ni
max.
|
Cu
max.
|
Al(tot)
|
N
max.
| |
S355G7+M
S355G7+N
|
0.14
|
0.15/0.55
|
1.00/1.65
|
0.01
|
0.02
|
0.25
|
0.08
|
0.04
|
0.06
|
0.025
|
0.5
|
0.3
|
0.015/0.055
|
0.01
|
S355G8+M
S355G8+N
|
0.14
|
0.15/0.55
|
1.00/1.65
|
0.007
|
0.02
|
0.25
|
0.08
|
0.04
|
0.06
|
0.025
|
0.5
|
0.3
|
0.015/0.055
|
0.01
|
S355G9+M
S355G9+N
|
0.12
|
0.15/0.55
|
1.65 max.
|
0.01
|
0.02
|
0.2
|
0.08a
|
0.03
|
0.06
|
0.025
|
0.7b
|
0.3
|
0.015/0.055
|
0.01
|
S355G10+M
S355G10+N
|
0.12
|
0.15/0.55
|
1.65 max.
|
0.005
|
0.015
|
0.2
|
0.08a
|
0.03
|
0.06
|
0.025
|
0.7b
|
0.3
|
0.015/0.055
|
0.01
|
a. For t > 75 mm maximum Mo of 0.20% shall apply for +M condition.
b. For t > 40 mm the minimum Ni content shall be 0.30%.
| ||||||||||||||
Minimum Yield Strength / MPa
|
Tensile Strength / MPa
|
Minimum Average Charpy-V
Impact Emergy / J@ -40ºC
|
t ≤ 16 mm 355
16 < t ≤ 25 mm 355
25 < t ≤ 40 mm 345
40 < t ≤ 63 mm 335
63 < t ≤ 100 mm 325
120 < t ≤ 150 mm 320 (+N only)
|
t ≤ 100 mm 470 - 630
t > 100 mm 460 - 620
(+N only)
Minimum Elongation (5.65√s°) / %
22
|
50
mid-thickness test also required for
t > 40 mm
|
(1) Other restrictions apply beyond those shown
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