Carbon Steel S355J2+N is a high-strength structural steel grade widely used in demanding construction and engineering applications. Manufactured in accordance with EN 10025-2 standards, this material is supplied in the normalized (+N) condition, ensuring a fine-grain structure, consistent mechanical properties, and improved toughness. Compared to conventional structural steels, S355J2+N offers higher yield strength while maintaining good ductility, weldability, and formability.
With excellent impact resistance, particularly at low temperatures, and uniform strength across sections, Carbon Steel S355J2+N is well suited for heavy-duty structural and load-bearing applications. Its reliable performance under static and dynamic stresses makes it ideal for use in bridges, offshore structures, pressure components, machinery parts, and fabricated assemblies. Commonly supplied in plates, beams, channels, angles, and round bars, Carbon Steel S355J2+N is preferred for projects that require higher strength, enhanced toughness, and long-term structural integrity.
High toughness and strength for demanding applications
Better resistance to impact and fatigue loads
Used in heavy engineering and structural components
CARBON STEEL S355J2+N ROUND BAR EQUIVALENT GRADES
STANDARD
EN
ASTM / ASME
IS
DIN
Carbon Steel S355J2+N
EN 10025-2 S355J2+N
ASTM A572 Gr 50
IS 2062 E350
DIN 1.0577
SPECIFICATION OF CARBON STEEL S355J2+N ROUND BAR
Size
22 mm up to 800 mm
Thickness
1 – 2 inch
Length
3 meter, 6 meter
Form
Carbon Steel Round, Hex, Flat, Half Round, Oval, Rectangular
in Black & Bright Finish
CHEMICAL COMPOSITION OF CARBON STEEL S355J2+N ROUND BAR
Grade
C
Si
Mn
P
S
C.E.
S355J2+N
0.22 max
0.55 max
1.60 max
0.035 max
0.035 max
0.47 max
MECHANICAL PROPERTIES OF CARBON STEEL S355J2+N ROUND BAR
Thickness (mm)
Yield Strength ReH min (N/mm²)
Tensile Strength Rm min (N/mm²)
Elongation A5 min (%)
Impact Test (Charpy V-Notch)
3 ≤ t ≤ 100
355
490 – 630
22
27 Joules at −20 °C
💡 Practical Difference in Use
Use Carbon Steel S355J2+N Round Bars when: higher strength, improved toughness, and reliable performance under heavier loads are required compared to standard structural steels. S355J2+N is a high-strength, fine-grain structural steel supplied in the normalized (+N) condition, offering excellent weldability along with superior impact resistance, even at low temperatures.
→ Example: heavy structural supports, load-bearing shafts, base plates, columns, and fabricated components for demanding applications.
Bright Finished / Machined Carbon Steel S355J2+N Round Bars when: precise dimensional accuracy, smooth surface finish, and consistent mechanical properties are required for machined or dynamically loaded components.
→ Example: precision shafts, machined pins, bolts, rollers, couplings, and high-strength structural parts.
Applications of Carbon Steel S355J2+N Round Bars
Carbon Steel S355J2+N round bars are chosen for applications where higher yield strength, excellent toughness, and structural reliability are essential, while still maintaining good weldability and fabrication ease.
Construction & Infrastructure: Bridges, columns, heavy supports, anchor rods, and base plates.
General Engineering: High-strength shafts, pins, brackets, and load-bearing machine components.
Selecting the right material depends on load conditions, strength requirements, fabrication methods, toughness needs, and overall project performance expectations.
Choose Carbon Steel S355J2+N Round Bars when:
Higher yield and tensile strength are required
Excellent impact toughness is needed, even at low temperatures
Structural reliability under heavy loads is critical
Used in bridges, heavy construction, and engineering structures
Good weldability with normalized condition is preferred
Long-term durability and safety margins are important
Smoother surface finish improves fit and performance
Machining operations such as turning, drilling, or milling are involved
Consistent mechanical properties are needed throughout the section
Used in precision shafts, fasteners, and mechanical assemblies
Uniform surface condition is essential for accurate assembly
Industries That Use Carbon Steel S355J2+N Round Bars
Carbon Steel S355J2+N round bars are widely used in industries that demand higher strength, excellent toughness, and dependable structural performance under demanding service conditions.
Construction & Infrastructure
Used in critical load-bearing and heavy structural components.
Uses
Bridges, columns, anchor rods, base plates, and supports.
Why Carbon Steel S355J2+N?
High yield strength, excellent toughness, and reliable weldability.
General Engineering
Used in high-strength fabricated and machined parts.
Uses
Shafts, pins, couplings, brackets, and load-bearing components.
Why Carbon Steel S355J2+N?
Superior strength, dimensional stability, and consistent performance.
Manufacturing & Fabrication
Used in welded assemblies and heavy machinery structures.
Uses
Machine frames, structural assemblies, and support systems.
Why Carbon Steel S355J2+N?
Normalized condition, higher strength class, and long service life.
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