As one of the leading manufacturers, exporters, and supplier GNEE is known for serving the highest quality plates worldwide. STRUCTURAL STEEL S355J2G3 PLATES are easy to fabricate and cut according to desired design requirements. We manufacture these plates using S355J2G3.
This structural steel is non-alloy steel. EN 10025:1990 is the steel standard. The current standard for these steel plates is EN 10025-2:2004.
These plates are thus tested at -20 centigrade to test their impact resistance. This universal corrosion resistance material is the widely popular grade for manufacturing plates.
S355J2G3 hot-rolled plates thus exhibit excellent corrosion resistance. This can be seen in a variety of severe environments. Both reducing and oxidizing environments are not an issue for these plates. They can even resist high chemicals, including the harshest and most toxic ones. Nitric, organic, inorganic, sulphuric, acetic, formic, chlorides, hydrochloric acid, and phosphoric acid show no impact on these plates due to their exceptional resisting abilities. Also, they are good for working in stress corrosion cracking, crevice, and pitting environments. The company offer several custom dimensions, standards, specifications, and designations. These industries range from basic to special such as sugar, dairy, textile, engineering, petrochemical, power generation, chemical, nuclear power plants, fertilizers, and more.
Hence, OFFSHORE STEEL S355J2G3 PLATES have great demand in marine industries. Marine water corrosion is not a problem for these plates, especially the crevice conditions. Good impact strength and readily weldability are characteristics of these plates at sub-zero temperatures.
Normalized and untreated are the common conditions in which we supply these plates. A slight modification is done in some variants of these plates. Since they are lightweight and durable, the plates last longer.
At GNEE, quality tests are conducted to detect faults, characteristics, and properties of the plates. Both impact tests and material tests are performed on these plates. Hardness tests, hydro testing, flaring tests, radiography, flattening tests, and destructive/non-destructive tests fall under impact tests. Material tests include positive material identifications, pitting corrosion tests, IGC, chemical composition analysis, and more.
Structural & Offshore S355J2G3 Plate Specification
Item : S355J2G3 - Offshore & Structural Steel Plate
Thickness : 5mm-150mm
Width : 1000mm-4500mm
Length : 3000mm-18000mm or as custom's request
Material : En 10025-2 Steel Plate, S355J2G3 Steel Plate
Technique : hot rolled
Standard : EN 10025-2:2004
Chemical Composition of S355J2G3
The chemical composition of S355J2G3 is optimized for strength, toughness, and weldability, with low carbon content to prevent brittleness. The table below shows the typical composition (% by weight) as per the old EN 10025 standard:
|
Element |
Composition (% by weight) |
|---|---|
|
Carbon (C) |
0.20 max |
|
Manganese (Mn) |
1.60 max |
|
Phosphorus (P) |
0.035 max |
|
Sulfur (S) |
0.035 max |
|
Silicon (Si) |
0.55 max |
|
Copper (Cu) |
0.55 max |
|
Nitrogen (N) |
0.009 max |
|
Iron (Fe) |
Balance |
Key Notes:
Carbon (C): Limited to 0.20% to ensure good weldability and ductility, preventing hardness in the heat-affected zone during welding.
Manganese (Mn): Up to 1.60% enhances strength and toughness, crucial for load-bearing applications.
Phosphorus (P) and Sulfur (S): Both capped at 0.035% to improve impact resistance and reduce brittleness, especially important for the J2 toughness designation.
Nitrogen (N): Controlled at 0.009% max to promote fine grain structure, aiding the normalized (G3) condition.
This composition ensures S355J2G3 is a low-alloy steel with excellent formability. GNEE's plates are produced with precise chemical control, often exceeding standard requirements for enhanced performance. For lower grades, check EN 10025-2 S275JR or EN 10025-2 S275J0 steel.
Mechanical Properties of S355J2G3
S355J2G3 exhibits robust mechanical properties, suitable for structural engineering. The table below summarizes its key properties for plates up to 16 mm thick, as per the old EN 10025 standard (values may vary with thickness):
|
Property |
Value |
|---|---|
|
Yield Strength (min) |
355 MPa |
|
Tensile Strength |
490–630 MPa |
|
Elongation (min, 200 mm) |
22% |
|
Impact Toughness (Charpy V-notch) |
27 J at -20°C |
|
Hardness (HB, typical) |
150–200 HB |
Key Notes:
Yield Strength: 355 MPa min allows for high-load applications, with values decreasing for thicker plates (e.g., 345 MPa for 16–40 mm).
Tensile Strength: 490–630 MPa provides excellent resistance to breaking under tension.
Elongation: 22% ensures good ductility for forming and welding.
Impact Toughness: 27 J at -20°C guarantees resistance to brittle failure in cold conditions, a key feature for outdoor structures.
Hardness: 150–200 HB indicates moderate hardness, easy to machine while durable.
The normalized (G3) condition refines the grain structure, improving these properties compared to as-rolled steels. For higher toughness, consider EN 10025-2 S355K2 steel or EN 10025-2 S450J0 steel from GNEE.
Weldability and Fabrication of S355J2G3
S355J2G3 has excellent weldability due to its low carbon equivalent (CEV max 0.45 for thicknesses up to 30 mm), allowing for welding without preheating in many cases. It is compatible with common welding methods like SMAW (using low-hydrogen electrodes such as E7018), GTAW, and SAW. For thicker plates (>40 mm), preheating to 100–150°C is recommended to avoid cracking in the heat-affected zone (HAZ).
Fabrication properties include good machinability and formability, with the normalized (G3) condition reducing distortion during heat treatment. Post-weld heat treatment (PWHT) at 600–650°C is advised for stress relief in ASME-coded applications. GNEE's S355J2G3 plates are supplied with optimized bonding for reliable welding, similar to EN 10025-2 S235J2 steel but with higher strength.
Applications of S355J2G3 Steel Plates
S355J2G3 is versatile and widely used in applications requiring high strength and toughness:
- Construction: For high-rise buildings, bridges, and stadiums, where its yield strength and low-temperature toughness are essential.
- Offshore Engineering: In platforms and wind turbines, leveraging its corrosion resistance and impact toughness.
- Heavy Machinery: For cranes, excavators, and mining equipment, where durability under dynamic loads is critical.
- Shipbuilding: In hulls and superstructures, benefiting from its weldability and strength.
- Energy Sector: For pipelines and storage tanks, offering reliability in varying temperatures.
GNEE's S355J2G3 plates are available in thicknesses from 6–300 mm, with options for cut-to-size and cladding for specialized applications like EN 10025-2 S355JR+N.
Comparison with Modern EN 10025-2 Grades
S355J2G3 from the old EN 10025 is equivalent to S355J2+N in the current EN 10025-2:2004 standard, where "+N" explicitly denotes normalized delivery. The table below compares S355J2G3 with other EN 10025-2 grades:
|
Grade |
Yield Strength (min, MPa) |
Tensile Strength (MPa) |
Impact Toughness (J at °C) |
Delivery Condition |
Key Advantage |
|---|---|---|---|---|---|
|
S355J2G3 |
355 |
470–630 |
27 J at -20°C |
Normalized (G3) |
Balanced strength and toughness for cold applications. |
|
S355JR |
355 |
470–630 |
27 J at +20°C |
As-rolled |
Cost-effective for standard conditions. |
|
S355J0 |
355 |
470–630 |
27 J at 0°C |
As-rolled |
Moderate cold resistance. |
|
S355J2 |
355 |
470–630 |
27 J at -20°C |
As-rolled or +N |
Modern equivalent to S355J2G3 without mandatory normalization. |
|
S355K2 |
355 |
470–630 |
40 J at -20°C |
As-rolled or +N |
Enhanced toughness for extreme loads. |
S355J2G3's mandatory normalized condition (G3) provides better uniformity than as-rolled grades like S355JR, making it preferable for legacy projects. GNEE offers modern equivalents like EN 10025-2 S355J2 steel.
If you want to learn more about GNEE's products, you can send an email to alloy@gneesteelgroup.com. We are more than happy to assist you.
What is the EN 10025 S355J2G3 equivalent to?
The S355j2g3 Equivalent Indian Standard are DIN 17100 St 52-3 N, UNI 7070 Fe 510 D, BS 4360 50 D, UNE 36.080 AE 355 D. What is S355J2G3 Plate ? The S355J2G3 Plate material can be described as a non-alloy structural steel, which is manufactured in accordance with the EN 10025:1990 standards.
What is S355J2G3 material?
A Complete Guide To S355J2G3 Plates. May 28, 2025 February 27, 2024 by Triton Alloys. S355J2G3 is a non-alloy, structural-grade steel widely used in various industrial sectors. It is a low-carbon and high-tensile strength steel available in different forms, such as plates, coils, and sheets.
| Other steel plate | ||||
| Name | Material | Specification (mm) | Tons | Remark |
| Clad steel plate | P265GH+410,S355JR+410,A516Gr70+316, A537CL1+304L,Q235B+304L,Q345B+304, A516Gr70(NACE)+410,A537CL1+904L, A537CL1+316L,A516Gr70+304L,A537CL1+304 ,A516Gr70+410,A516Gr70+904L |
2-300mm(Based plate),1-50mm(Composited plate) | / | UT, AR, TMCP.Normalized, Quenched and Tempered,Z Direction Test, Charpy V-Notch impact TestThe Third Party Test , Coated or Shot Blasting and Painting. |
| Low Alloy | Q345A, Q345B, Q345C, Q345D, Q345E, Q390, Q420, Q460C, ST52-3, S355J2+N, SS400, SA302GrC, S275NL, 35CrMo | 6 - 350 | 5788.56 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| Pressure Vessel Plate | Q245R, Q345R, Q370R, 16MnDR, 09MnNiDR, 15CrMoR, 14Cr1MoR, 12Cr2Mo1R, SA516Gr60, SA516Gr70, SA516Gr485, SA285, SA387Gr11, SA387Gr12, SA387Gr22, P265,P295,P355GH,Q245R(R-HIC),Q345R(R-HIC) | 3 - 300 | 8650 | Normalizing, tempered ,controlled rolling, hot rolling , Hot rolling,1st inspection, 2nd inspection, 3rd inspection |
| High-Strength Plate | WH785D/E,Q960D/E, Q890D/E,WH60D/E,WH70B,Q550D,Q590D,Q690D/E | 8 - 120 | 3086.352 | Quenched and tempered |
| Wear-Resistant Plate | NM360, NM400, NM450, NM500 | 6 - 150 | 3866.297 | Quenched and tempered |
| Bridge Plate | Q235qC, Q345qC, Q370qC, Q420qC, Q345qDNH, Q370qDNH, A709 - 50F - 2, A709 - 50T - 2 | 8 - 200 | 2853.621 | Hot rolling, normalized ,hot rolling controlled rolling, quenched and tempered + toughness and brittleness |
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