S235J2W Steel Grade Summary
Standard: EN 10025-5 (European weathering steel)
Type: Atmospheric corrosion-resistant structural steel
Equivalent Grades:
ASTM A588 Grade A (USA)
JIS G 3114 SMA400AW (Japan)
IS 2062 WR50B (India)
Mechanical Properties
| Property | Value | Test Standard |
|---|---|---|
| Yield Strength (ReH) | ≥235 MPa | EN ISO 6892-1 |
| Tensile Strength (Rm) | 360-510 MPa | EN ISO 6892-1 |
| Elongation (A₅) | ≥17% (thickness ≤16mm) | EN ISO 6892-1 |
| Impact Toughness | ≥27J at -20°C (Charpy V-notch) | EN ISO 148-1 |
| Brinell Hardness | 120-180 HBW | EN ISO 6506-1 |
Key Features
Weather Resistance:
Forms a protective rust patina (eliminates painting needs).
Corrosion resistance ≈ 2–4× carbon steel in open atmospheres.
Weldability:
Excellent (preheat if thickness >25mm).
Use low-hydrogen electrodes (e.g., E7018).
Typical Applications:
Bridges, transmission towers, shipping containers.
Architectural façades (rust-colored aesthetic).
Chemical Composition (Max %)
| C | Si | Mn | P | S | Cu | Cr |
|---|---|---|---|---|---|---|
| 0.20 | 0.40 | 1.40 | 0.035 | 0.035 | 0.25-0.55 | 0.30-1.25 |
