EN 10210 S355J2 is a European-standard hot-finished structural hollow section manufactured from non-alloy quality steel. Owing to its high strength, excellent toughness, and reliable weldability, it is widely used in structural and mechanical applications across multiple industries.
Key Characteristics
Standard: EN 10210-1, EN 10210-2
Steel Grade: S355J2
Material Type: Non-alloy quality structural steel
Supply Condition: Hot finished
Grade Designation Explanation:
S – Structural steel
355 – Minimum yield strength of 355 MPa
J2 – Minimum impact energy of 27 J at −20°C
H – Hollow section
Chemical Composition
The controlled chemical composition of EN10210 S355J2 ensures stable mechanical performance and good fabrication properties:
Carbon (C): ≤ 0.22%
Manganese (Mn): ≤ 1.60%
Phosphorus (P): ≤ 0.03%
Sulfur (S): ≤ 0.03%
Silicon (Si): ≤ 0.55%
Nitrogen (N): ≤ 0.014%
Copper (Cu): ≤ 0.55%
Mechanical Properties
EN10210 S355J2 hollow sections exhibit excellent strength and toughness, making them suitable for load-bearing structures:
Tensile Strength: 470 – 630 MPa
Yield Strength: ≥ 355 MPa
Elongation: ≥ 20% (for thickness ≤ 40 mm)
Impact Toughness: Minimum 27 J at −20°C
Available Sizes
Womic Steel supplies EN10210 S355J2 hollow sections in a wide range of dimensions:
Circular Hollow Sections (CHS)
Outer Diameter: 21.3 mm – 1219 mm
Wall Thickness: 2.5 mm – 50 mm
Square Hollow Sections (SHS)
Size Range: 40 × 40 mm – 500 × 500 mm
Wall Thickness: 2.5 mm – 25 mm
Rectangular Hollow Sections (RHS)
Size Range: 50 × 30 mm – 500 × 300 mm
Wall Thickness: 2.5 mm – 25 mm
Impact Performance
Charpy V-Notch Test:
Guaranteed minimum impact energy of 27 J at −20°C
Carbon Equivalent (CE)
The carbon equivalent value is used to evaluate weldability:
CE Formula:
CE = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15
A controlled CE value ensures good welding performance with appropriate procedures.
Hydrostatic Testing
All EN10210 S355J2 hollow sections are subjected to hydrostatic pressure testing to confirm structural integrity:
Test Pressure: At least 1.5 times the design pressure
Inspection & Quality Control
To ensure compliance with EN10210 standards, each product undergoes strict inspection and testing procedures:
Visual Inspection: Detection of surface imperfections
Dimensional Inspection: Verification of size and geometry
Non-Destructive Testing (NDT): Ultrasonic and magnetic particle testing for internal and surface flaws
Hydrostatic Testing: Verification of pressure resistance
What material is S355J2?
S355J2 is a medium tensile, low carbon manganese steel which is readily weldable and possess good impact resistance (also in sub-zero temperatures). This material is commonly supplied in the untreated or normalized condition.
What is the equivalent material of S355J2?
The equivalent of S355J2 EN 10025-2 is ASTM A572 Grade 50, DIN ST52-3, JIS SM490YA, and GB Q355D, with similar high strength and low-temperature toughness for structural use. Gangsteel's high-quality plates ensure compliance for your projects. For more, explore our BS EN 10025-2 material grade guide.
What is the difference between S355JR and S355J2?
S355JR steel has a minimum impact strength of 27 J under 20-degree temperature conditions while the second type of steel, S355J2+N has the same impact strength but with a temperature of -20 degrees.
What is the ASTM equivalent of S355J2?
The ASTM equivalent of S355J2 is A572 Grade 50, with similar high strength and low-temperature toughness for structural use. Gangsteel's high-quality plates ensure compliance for your projects. For more, explore our BS EN 10025-2 material grade guide.
What is the yield strength of S355J2 steel?
Grade S355J2 has a minimum yield strength of 355 MPa.