EN 10025-2 S235/S275/S355 Carbon Steel Coil: Versatile Structural Steel for Heavy-Duty Applications
Product Overview
EN 10025-2 S235JR/S275J2/S355J2 carbon steel coil is a low-alloy high-strength structural steel compliant with EN 10025-2, ASTM A572, and JIS G3106 SM490. Designed for construction machinery, transmission towers, and industrial frameworks, it delivers 235–355 MPa yield strength with 18–26% elongation and excellent weldability. Available in grades S235 (mild steel) to S355 (high-strength), it reduces fabrication costs by 20% compared to quenched steels while maintaining low-temperature toughness (-20°C).
Key Technical Specifications
1. Production & Dimensions
- Process:
- Hot-rolled: 2.75–100mm (±1% thickness tolerance)
- Cold-rolled: 0.2–3mm (±0.4% tolerance)
- Width: 45–2,200mm (compatible with CNC cutting systems)
- Surface: Mill scale (Ra 10µm), wire-drawn (Ra 3.5µm), or laminated film (anti-abrasion)
2. Chemical Composition
| Grade | C (≤) | Mn (≤) | Si (≤) | P (≤) | S (≤) | CEV (IIW) |
|---|---|---|---|---|---|---|
| S235JR | 0.17% | 1.40% | 0.55% | 0.035% | 0.035% | 0.29 |
| S275J2 | 0.18% | 1.50% | 0.55% | 0.025% | 0.025% | 0.34 |
| S355J2 | 0.20% | 1.60% | 0.55% | 0.025% | 0.025% | 0.42 |
Trace elements: Cu ≤0.55%, N ≤0.012%
Mechanical Properties
| Grade | Thickness (mm) | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact (-20°C) |
|---|---|---|---|---|---|
| S235JR | ≤16 | 235 | 360–510 | 26 | 27J |
| S275J2 | 16–40 | 265 | 410–560 | 22 | 34J |
| S355J2 | 40–63 | 335 | 470–630 | 18 | 40J |
Tested per EN ISO 6892-1 (tensile) & EN ISO 148-1 (Charpy V-notch)
Performance Advantages
- Cost-Effective Fabrication:
- Bend radius: 3× thickness (EN 10025-2 compliant).
- Welding speed: 1.5 m/min with E6013 electrodes (S275J2, 12mm plate).
- Low-Temperature Toughness:
- Charpy V-notch: 40J at -20°C (S355J2, 25mm thickness).
- Ideal for Siberian oil rigs and Nordic wind turbine bases.
- Corrosion Resistance:
- Atmospheric corrosion rate: 0.065 mm/year (ISO 9223 C2 environments).
- Compatible with hot-dip galvanizing (600 g/m² coating).
- Thermal Stability:
- Thermal conductivity: 49 W/m·K (S235JR at 20°C).
- Expansion coefficient: 12.2 µm/m°C (20–150°C).
Applications by Grade
| Grade | Industry | Use Case |
|---|---|---|
| S235JR | Civil Eng. | Warehouse roof trusses |
| S275J2 | Energy | Solar farm mounting systems |
| S355J2 | Heavy Machinery | Excavator booms |
Global Equivalents
| EN 10025-2 | ASTM | JIS G3106 | GB/T 1591 |
|---|---|---|---|
| S235JR | A283 Gr.C | SS400 | Q235B |
| S355J2 | A572 Gr.50 | SM490YB | Q345D |
Sustainability & Compliance
- Recycled Content: 83% (mill-certified)
- RoHS Compliance: Lead <0.009%, Mercury-free
- Certifications: CE Mark EN 1090-1, ISO 1461 (galvanized)
Packing And Delivery
