S355G7+N S355G8+N High Tensile Steel Sheet
S355G7+N high strength low alloy steel plate is a high-strength, hot-rolled welded structural steel plate. It has good weldability and corrosion resistance, and is commonly used in marine and ship construction and oil and gas platforms. The material belongs to low carbon alloy steel, in which "S" means structural steel, "355" means the minimum tensile strength is 355MPa, and "G7" means that the plate is suitable for use in temperatures of -20°C. G7" means that the plate is suitable for use at temperatures up to -20°C, and "+N" means that the plate has been normalised.
S355G8+N hsla steel sheet belongs to marine structural steel plate, implementing EN10025 standard. It can be used to manufacture bridge equipment, marine platforms, derricks, leg piles, pillars, ship equipment, cross-sea bridge structures, port machinery, etc. S355G8+N hsla steel plate has the properties of high strength, high toughness, fatigue resistance, impact resistance, corrosion resistance, wear-resistant welding and easy processing.
s355G7+N high tensile alloy steel chemical composition
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Al |
Cu |
N |
Nb |
Ti |
V |
Nb+V |
|
0.14 |
0.15-0.55 |
1.0-1.65 |
0.02 |
0.01 |
0.25 |
0.08 |
0.5 |
0.015-0.055 |
0.3 |
0.01 |
0.04 |
0.025 |
0.06 |
0.06 |
S355G8+N high strength structural steel chemical composition
| C | Si | Mn | Ni | P | S | Cr | Mo | V | N | Nb | Ti | Al | Cu |
| max 0.14 | 0.15 - 0.55 | 1 - 1.65 | max 0.5 | max 0.02 | max 0.007 | max 0.25 | max 0.08 | max 0.06 | max 0.01 | max 0.04 | max 0.025 | 0.015 - 0.055 | max 0.3 |
S355G7+N low alloy structural steel mechanical property
|
Grade |
Mechanical Properties (min) unless stated |
||||||||
|
Tensile Strength |
Yield Strength |
Elongation |
|||||||
|
Thickness (mm) |
Thickness t - mm |
||||||||
|
≤100 |
>100 |
≤16 |
16<t≤25 |
25<t≤40 |
40<t≤63 |
63<t≤100 |
100<t≤150 |
% |
|
|
S355G7+N |
470/630 |
460/620 |
355 |
355 |
345 |
335 |
325 |
320 |
22 |
S355G8+N hsla structural steel mechanical property
|
Grade |
Steel No. |
Tensile Strength |
Minimum Yield strength for thickness t(mm) |
Minimum elongation A on gauge length |
Minimum average CharpyV-notch |
Thickness macximum |
|||||||
|
Thickness t(mm)≤100 |
Thickness t(mm) ＞100 |
t≤16 |
16＜t≤25 |
25＜t≤40 |
40＜t≤63 |
63＜t≤100 |
100＜t≤150 |
Temp. |
Energy |
||||
|
Mpa |
Mpa |
Mpa |
Mpa |
Mpa |
Mpa |
Mpa |
Mpa |
% |
℃ |
J |
mm |
||
|
S355G8+N |
1.8810+N |
470 to 630 |
460-620 |
355 |
355 |
345 |
335 |
325 |
320 |
22 |
-40 |
50 |
150 |
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