Q355NH Weathering Steel Plate – Excellent Mechanical Properties
Key Mechanical Properties:
✔ High Strength: Minimum yield strength ≥355 MPa, tensile strength 470-630 MPa
✔ Good Toughness: Impact energy ≥27J at -20°C (excellent low-temperature performance)
✔ Ductility: Elongation ≥22%, ensuring good formability for structural applications
✔ Weldability: Controlled carbon equivalent (CEV ≤ 0.45) for easy welding without preheating (in most cases)
Why Q355NH Performs Well?
Optimized Alloy Design (P, Cu, Cr, Ni) enhances both corrosion resistance & mechanical strength
Thermomechanical Rolling ensures fine-grained microstructure for balanced strength-toughness
Weathering Resistance (2-8× better than carbon steel) while maintaining structural integrity
Applications: Bridges, buildings, containers, railway cars – where durability + strength are critical.
