Steel P355NL
📌 Overview and Technical Specifications
Steel P355NL is a non-alloy structural steel designed for pressure vessels, offering high strength, ductility, and excellent weldability. It is widely used in the energy, petrochemical, and heavy machinery industries.
🛠 Specifications:
- Hardness: ≤ 220 HB
- Thickness: from 3 mm to 100 mm
- Yield strength: ≥ 355 MPa
- Tensile strength: 490–630 MPa
- Elongation: 20–24%
🧪 Chemical Composition
- Carbon (C): ≤0.18%
- Silicon (Si): ≤0.40%
- Manganese (Mn): 1.00 – 1.70%
- Phosphorus (P): ≤0.025%
- Sulfur (S): ≤0.015%
- Aluminum (Al): ≥0.020%
- Chromium (Cr): ≤0.30%
- Nickel (Ni): ≤0.50%
- Molybdenum (Mo): ≤0.08%
⚙ Applications
Steel P355NL is widely used in the following industries:
- 🔥 Manufacturing of boilers and heat exchangers
- 🛢 Production of tanks and pressure vessels
- 🏗 Structural components for heavy machinery
- 🏭 Chemical and petrochemical industries
- ⚡ Components for power plants
🌟 Features
- ✅ High strength and ductility
- ✅ Excellent weldability without the need for heat treatment
- ✅ Good resistance to high temperatures and pressure
- ✅ Durability under prolonged mechanical loads
- ✅ Enhanced corrosion resistance
P355NL Normalized Fine Grain Structural Steel Delivery Forms
| Steel grade EN 10025-3 | Steel grade DIN | Dimensions supplied (mm) | ||
| Thickness (mm) | Width (mm) | Length (mm) | ||
| S355NL | 1.0546 | 2 –220 | 1,000–4,000 | 16,000 |
| S420NL | 1.8912 | 8–120 | 1,000–3,500 | 16,000 |
| S460NL | 1.8903 | 4–180 | 1000–3500 | 16,000 |
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