Looking for a reliable BS EN 10025-2 S355JR structural steel plates supplier for construction or heavy engineering projects? GNEE Steel is a professional structural steel plate manufacturer and exporter, supplying EN 10025-2 S355JR plates to global EPC contractors, fabricators, and steel stockists.
S355JR structural steel plates
As a direct steel plate manufacturer, GNEE controls raw material sourcing, rolling, heat treatment, and inspection in-house, ensuring stable quality and full traceability.
Our BS EN 10025-2 S355JR structural steel plates are widely used in bridges, buildings, offshore platforms, shipbuilding, and heavy machinery projects where strength and weldability are critical.
What Is BS EN 10025-2 S355JR Structural Steel Plate
BS EN 10025-2 is the British adoption of the European standard for hot-rolled non-alloy structural steels. Among all grades, S355JR is one of the most commonly specified due to its balanced mechanical performance.
Key meaning of S355JR:
S – Structural steel
355 – Minimum yield strength 355 MPa
JR – Impact tested at +20°C (27 J)
Compared with lower grades such as S235JR or S275JR, BS EN 10025-2 S355JR structural steel plates allow lighter designs without compromising safety.
Chemical Composition of BS EN 10025-2 S355JR Steel Plates
The controlled chemical composition ensures strength, toughness, and weldability.
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.24 |
| Manganese (Mn) | ≤ 1.60 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Silicon (Si) | ≤ 0.55 |
| Copper (Cu) | ≤ 0.55 |
| Nitrogen (N) | ≤ 0.012 |
| Iron (Fe) | Balance |
Mechanical Properties of EN 10025-2 S355JR Steel Plate
For plates ≤16 mm thickness:
| Property | Value |
|---|---|
| Yield Strength | ≥ 355 MPa |
| Tensile Strength | 470–630 MPa |
| Elongation | ≥ 20% |
| Impact Energy | 27 J at +20°C |
| Hardness (HB) | 150–200 |
Thickness & Size Range of S355JR Structural Steel Plates
GNEE supplies BS EN 10025-2 S355JR structural steel plates in a wide dimensional range.
- Available thickness:
6 mm – 300 mm
- Standard width:
1,500 mm – 3,500 mm
- Standard length:
Up to 12,000 mm (custom cutting available)
Thickness tolerances comply with EN 10029 Class A, with tighter tolerances available upon request.
Equivalent Grades of BS EN 10025-2 S355JR Steel
| Standard | Equivalent Grade |
|---|---|
| ASTM (USA) | A572 Grade 50 |
| DIN (Germany) | ST52-3 |
| JIS (Japan) | SM490A |
| GB (China) | Q345B |
| AFNOR (France) | E36-2 |
| ISO | FE510B |
Applications of S355JR Structural Steel Plates
BS EN 10025-2 S355JR steel plates are widely used in:
- Bridges & building structures
- Offshore platforms & wind towers
- Ship hulls and superstructures
- Heavy machinery & mining equipment
- Industrial frames and supports
Their strength-to-weight ratio makes them ideal for large-scale steel structures.
Why Choose GNEE as Your S355JR Steel Plate Supplier
- Direct manufacturer, not a trader
- EN 10204 3.1 / 3.2 certificates available
- Support SGS, BV, TUV third-party inspection
- Fast delivery with stable rolling schedule
- Technical support for grade comparison & selection
BS EN 10025-2 S355JR structural steel plates offer high strength, excellent weldability, and reliable toughness for demanding structural applications.
As an experienced manufacturer, GNEE Steel ensures consistent quality, full certification, and global delivery support.
If you are sourcing S355JR plates for bridges, buildings, or heavy engineering projects,
Contact now to get S355JR Quote
What is S355JR equivalent to?
S355JR equivalent grades have very close chemical composition and mechanical properties to that of S355JR steel. Both the S355JR equivalent grades Q345B, A572 Gr 50, ST52-3, SM490B and S355JR steel are main products of Gnee steel.
What is the difference between S275JR and S355JR?
S275JR: Offers a minimum yield strength of 275 MPa for thicknesses up to 16 mm. This makes it suitable for applications where moderate strength is sufficient. S355JR: Provides a higher minimum yield strength of 355 MPa for thicknesses up to 16 mm, making it ideal for projects requiring greater load-bearing capacity.
What is S355JR steel?
355JR is a grade of low-carbon steel commonly used in structural applications. It is part of the 'S' family of steels, which includes S235, S275, and S355 grades. The "JR" designation means that the material has been subjected to a Charpy V-notch impact test at 208℃ and has a minimum impact strength of 27 Joules.