EN 10025-2 S355JR is a widely used non-alloy structural steel grade designed for hot-rolled applications requiring high strength, excellent weldability, and reliable impact resistance.
With a minimum yield strength of 355 MPa, S355JR is commonly applied in construction, bridges, heavy machinery, offshore structures, and infrastructure projects worldwide.
EN 10025-2 S355JR
As a globally recognized manufacturer and exporter of structural steel plates, Gangsteel (GNEE Group) supplies premium EN 10025-2 S355JR steel plates tailored for demanding applications in construction, shipbuilding, offshore engineering, and heavy equipment manufacturing. All plates are produced under strict quality control and supplied with EN 10204 3.1 mill test certificates.
EN 10025-2 S355JR Equivalent Material Grades Overview
Due to global sourcing requirements, engineers often need to identify EN 10025-2 S355JR equivalent material grades under other international standards. These equivalents are selected based on similar chemical composition, mechanical properties, and application performance.
Common Equivalent Grades of EN 10025-2 S355JR
ASTM A572 Grade 50 (USA)
High-strength low-alloy structural steel used for buildings and bridges
DIN ST52-3 (Germany)
Non-alloy structural steel with comparable strength and weldability
JIS SM490A (Japan)
Rolled steel for welded structures with similar strength and toughness
GB Q345B (China)
Low-alloy high-strength steel widely used in construction and machinery
NFA 35-501 E 36-2 (France)
Structural steel for general construction applications
UNI 7070 Fe 510 B (Italy)
Non-alloy structural steel for load-bearing structures
BS 4360 Grade 50B (UK, withdrawn)
Older British standard equivalent in strength
UNE 36.080 AE 355 B (Spain)
Structural steel with similar mechanical behavior
These grades are commonly accepted as substitutes for EN 10025-2 S355JR, subject to project approval and specification requirements.
Chemical Composition Comparison of EN 10025-2 S355JR and Equivalent Grades
The chemical design of EN 10025-2 S355JR and its equivalents ensures good weldability, sufficient toughness, and stable strength. Minor variations exist depending on national standards.
Chemical Composition Comparison (% by Weight)
| Element | S355JR | ASTM A572 Gr 50 | DIN ST52-3 | JIS SM490A | GB Q345B | NFA E36-2 | UNI Fe 510 B | BS 50B | UNE AE 355 B |
|---|---|---|---|---|---|---|---|---|---|
| C | 0.24 | 0.23 | 0.20 | 0.18 | 0.20 | 0.22 | 0.22 | 0.20 | 0.22 |
| Mn | 1.60 | 1.35 | 1.60 | 1.60 | 1.70 | 1.60 | 1.60 | 1.50 | 1.60 |
| P | 0.035 | 0.040 | 0.040 | 0.035 | 0.035 | 0.040 | 0.040 | 0.040 | 0.040 |
| S | 0.035 | 0.050 | 0.040 | 0.035 | 0.035 | 0.045 | 0.050 | 0.050 | 0.050 |
| Si | 0.55 | 0.40 | 0.55 | 0.55 | 0.50 | 0.55 | 0.55 | 0.55 | 0.55 |
| Cu | 0.55 | – | – | – | 0.30 | – | – | 0.35 | – |
| N | 0.012 | – | 0.009 | – | – | – | – | – | – |
| Fe | Balance | Balance | Balance | Balance | Balance | Balance | Balance | Balance | Balance |
Mechanical Properties Comparison: S355JR and Equivalent Grades
From a mechanical perspective, EN 10025-2 S355JR equivalent materials are aligned around the same strength level.
Typical Mechanical Properties (t ≤ 16 mm)
| Grade | Yield Strength (MPa) Min. | Tensile Strength (MPa) |
|---|---|---|
| EN 10025-2 S355JR | 355 | 470–630 |
| ASTM A572 Grade 50 | 345 | 450–620 |
| DIN ST52-3 | 355 | 490–630 |
| JIS SM490A | 325 | 490–610 |
| GB Q345B | 345 | 470–630 |
These values confirm that S355JR and its equivalents can be used interchangeably in most structural applications.
Why Choose Gangsteel for EN 10025-2 S355JR Steel Plates?
Gnee Steel offers a full range of EN 10025-2 S355JR structural steel plates with:
- Stable mill sources and strict process control
- EN 10204 3.1 certificates for every batch
- Optional ultrasonic testing (UT) and impact testing
- Support for SGS / BV / TUV third-party inspection
- Export-standard packing for sea freight
In conclusion, EN 10025-2 S355JR equivalent material grades such as ASTM A572 Grade 50, JIS SM490A, GB Q345B, NFA E36-2, and UNI Fe 510 B provide comparable chemical composition and mechanical performance for global structural projects.
The final selection should consider:
- Project standard requirements
- Certification and inspection needs
- Availability and delivery time
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.