| Quantity: | |
|---|---|
| Category | Parameter | Value |
| Chemical Composition | Carbon (C) | ≤ 0.22 |
| Silicon (Si) | ≤ 0.55 | |
| Manganese (Mn) | ≤ 1.60 | |
| Phosphorus (P) | ≤ 0.025 | |
| Sulfur (S) | ≤ 0.025 | |
| Copper (Cu) | ≤ 0.55 | |
| Mechanical Properties | Yield Strength | ≥ 355 MPa |
| Tensile Strength | 450 MPa - 680 MPa | |
| Impact Toughness | ≥ 27 Joules (at -20°C) | |
| Elongation | ≥ 22% | |
| Physical Properties | Density | 7.85 g/cm³ (0.284 lb/in³) |
| Melting Point | 1450 - 1530°C (2640 - 2800°F) | |
| Heat Treatment | Hot Rolling | Rolling above recrystallization temperature to achieve desired shape and improve strength |
| Normalizing | Heated and air-cooled to refine grains and enhance hardness, strength, and wear resistance | |
| Normalizing + Tempering | Combined treatment to further improve toughness and comprehensive mechanical properties | |
| Controlled Rolling | Adjusting process parameters to refine microstructure and enhance strength and toughness | |
| Annealing | Process to reduce hardness, relieve internal stress, and improve plasticity | |
| Forging | Forging Process Considerations | Optimizing microstructure through controlled heating, deformation, and cooling parameters |
| Forging Performance Factors | Affected by thickness and size; preheating or special techniques may be required |
High Structural Strength
Boasts a guaranteed minimum yield of 355 MPa and ultimate tensile strength up to 620 MPa, ensuring robust performance under heavy static loads.
Low‑Temperature Toughness
Impact-tested to absorb ≥ 27 J of energy at −20 °C (the “J2” suffix), making it ideal for applications in cold or arctic conditions.
Excellent Weldability & Machinability
Low carbon-equivalent (max CEV ~0.47) and controlled alloying deliver superb weldability with conventional methods, and consistent machinability in forming and cutting operations.
EN 10025‑Compliant & Versatile Delivery
Manufactured strictly to EN 10025‑2 standards and available in normalized, normalized + tempered, or thermo-mechanically controlled rolled (TMCP) conditions for engineering flexibility.
Broad Industrial Versatility
Combines high strength-to-weight, fatigue resistance, impact absorption, and corrosion tolerance, making it a preferred grade across construction, machinery, offshore oil & gas, and petrochemical sectors
Bridge & Civil Infrastructure
S355J2’s high yield strength and −20 °C Charpy toughness make it ideal for load-bearing girders, piers, and structural steel frames in bridges and buildings designed for demanding service and cold-weather endurance
Heavy Machinery & Earth‑Moving Equipment
Excellent weldability, impact resistance, and tensile strength ensure S355J2 reliably performs in fabrication of dozer frames, excavator arms, dump truck chassis, and other heavy-duty machine components
Offshore, Oil & Gas & Power Installations
With standard-compliant chemistry and toughness at sub-zero temperatures, S355J2 is extensively used in structural parts of offshore platforms, pipelines, petrochemical plants and power generation facilities
Rail & Industrial Transport Components
S355J2 combines fatigue resistance with machinability and weldability, making it well-suited for railway wagon structures, industrial trailers, transmission towers and port-handling equipment
Q: What is S355J2 steel used for?
A: S355J2 is widely used in bridges, construction frames, heavy machinery, offshore structures, and industrial transport equipment due to its high strength and impact toughness.
Q: Does S355J2 steel perform well in cold environments?
A: Yes, S355J2 is tested to absorb ≥27J of impact energy at −20°C, making it suitable for cold climate applications.
Q: Is S355J2 steel easy to weld and machine?
A: S355J2 offers excellent weldability and machinability thanks to its low carbon equivalent and controlled alloy composition.
Q: What standards does S355J2 comply with?
A: S355J2 complies with EN 10025-2 European standards for structural steel products.
| Category | Parameter | Value |
| Chemical Composition | Carbon (C) | ≤ 0.22 |
| Silicon (Si) | ≤ 0.55 | |
| Manganese (Mn) | ≤ 1.60 | |
| Phosphorus (P) | ≤ 0.025 | |
| Sulfur (S) | ≤ 0.025 | |
| Copper (Cu) | ≤ 0.55 | |
| Mechanical Properties | Yield Strength | ≥ 355 MPa |
| Tensile Strength | 450 MPa - 680 MPa | |
| Impact Toughness | ≥ 27 Joules (at -20°C) | |
| Elongation | ≥ 22% | |
| Physical Properties | Density | 7.85 g/cm³ (0.284 lb/in³) |
| Melting Point | 1450 - 1530°C (2640 - 2800°F) | |
| Heat Treatment | Hot Rolling | Rolling above recrystallization temperature to achieve desired shape and improve strength |
| Normalizing | Heated and air-cooled to refine grains and enhance hardness, strength, and wear resistance | |
| Normalizing + Tempering | Combined treatment to further improve toughness and comprehensive mechanical properties | |
| Controlled Rolling | Adjusting process parameters to refine microstructure and enhance strength and toughness | |
| Annealing | Process to reduce hardness, relieve internal stress, and improve plasticity | |
| Forging | Forging Process Considerations | Optimizing microstructure through controlled heating, deformation, and cooling parameters |
| Forging Performance Factors | Affected by thickness and size; preheating or special techniques may be required |
High Structural Strength
Boasts a guaranteed minimum yield of 355 MPa and ultimate tensile strength up to 620 MPa, ensuring robust performance under heavy static loads.
Low‑Temperature Toughness
Impact-tested to absorb ≥ 27 J of energy at −20 °C (the “J2” suffix), making it ideal for applications in cold or arctic conditions.
Excellent Weldability & Machinability
Low carbon-equivalent (max CEV ~0.47) and controlled alloying deliver superb weldability with conventional methods, and consistent machinability in forming and cutting operations.
EN 10025‑Compliant & Versatile Delivery
Manufactured strictly to EN 10025‑2 standards and available in normalized, normalized + tempered, or thermo-mechanically controlled rolled (TMCP) conditions for engineering flexibility.
Broad Industrial Versatility
Combines high strength-to-weight, fatigue resistance, impact absorption, and corrosion tolerance, making it a preferred grade across construction, machinery, offshore oil & gas, and petrochemical sectors
Bridge & Civil Infrastructure
S355J2’s high yield strength and −20 °C Charpy toughness make it ideal for load-bearing girders, piers, and structural steel frames in bridges and buildings designed for demanding service and cold-weather endurance
Heavy Machinery & Earth‑Moving Equipment
Excellent weldability, impact resistance, and tensile strength ensure S355J2 reliably performs in fabrication of dozer frames, excavator arms, dump truck chassis, and other heavy-duty machine components
Offshore, Oil & Gas & Power Installations
With standard-compliant chemistry and toughness at sub-zero temperatures, S355J2 is extensively used in structural parts of offshore platforms, pipelines, petrochemical plants and power generation facilities
Rail & Industrial Transport Components
S355J2 combines fatigue resistance with machinability and weldability, making it well-suited for railway wagon structures, industrial trailers, transmission towers and port-handling equipment
Q: What is S355J2 steel used for?
A: S355J2 is widely used in bridges, construction frames, heavy machinery, offshore structures, and industrial transport equipment due to its high strength and impact toughness.
Q: Does S355J2 steel perform well in cold environments?
A: Yes, S355J2 is tested to absorb ≥27J of impact energy at −20°C, making it suitable for cold climate applications.
Q: Is S355J2 steel easy to weld and machine?
A: S355J2 offers excellent weldability and machinability thanks to its low carbon equivalent and controlled alloy composition.
Q: What standards does S355J2 comply with?
A: S355J2 complies with EN 10025-2 European standards for structural steel products.
