2013/01/06

S355G9


S355G9

S355G9+N ; S355G9+M Steel Plate
Standard : EN10225:2001
Nearest Equivalent Grade : Werkstoff 1.8811+N;1.8811+M; Norsok M-120 Y25 S355N4;Y25 S355M4
Typical Application : Primary Structure
S355G9 offer good tensile and yield strength and has good weldability structural grade steel,
this steel plate is used throughout the offshore industry in the building of offshore steel structures & platforms
which are subjected to some of the harshest weather conditions.
The material can be delivered as S355G9+N (N= Normalized) or SG355G9+M (M= Thermo-Mechanically Rolled).
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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