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Technical Specifications
Product Overview
Metallurgical Characteristics
EN L415 steel features a fine-grained ferrite-pearlite microstructure achieved through controlled thermomechanical processing. The steel's enhanced strength derives from solid solution strengthening, grain refinement, and precipitation hardening mechanisms. Microalloying elements such as niobium and vanadium contribute to grain refinement and precipitation strengthening, while maintaining excellent weldability and toughness properties.
Heat Treatment Process
MetalZenith employs advanced controlled rolling followed by accelerated cooling (TMCP) to optimize the steel's microstructure. The process involves:
- Reheating to 1150-1200°C for austenite homogenization
- Controlled rolling in the temperature range of 850-950°C
- Accelerated cooling at rates of 5-15°C/s to 500-600°C
- Air cooling to ambient temperature
Manufacturing Process Excellence
Our state-of-the-art production facility utilizes electric arc furnace steelmaking with ladle refining and vacuum degassing for precise chemical composition control. Continuous casting ensures uniform structure, while our advanced rolling mills provide exceptional dimensional accuracy and surface quality. Real-time process monitoring and automated quality control systems guarantee consistent product performance.
Quality Standards & Certifications
MetalZenith maintains compliance with international standards including EN 10208-2, API 5L PSL2, and ISO 3183. Our quality management system encompasses comprehensive testing protocols including chemical analysis, mechanical testing, non-destructive testing, and dimensional verification. Each product batch is accompanied by certified test reports and material traceability documentation.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.24 |
| Manganese (Mn) | 1.20 - 1.60 |
| Silicon (Si) | 0.15 - 0.45 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.015 |
| Chromium (Cr) | ≤ 0.30 |
| Nickel (Ni) | ≤ 0.30 |
| Molybdenum (Mo) | ≤ 0.15 |
| Copper (Cu) | ≤ 0.35 |
| Niobium (Nb) | ≤ 0.05 |
| Vanadium (V) | ≤ 0.06 |
| Titanium (Ti) | ≤ 0.04 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (Rp0.2) | 415 - 565 MPa |
| Tensile Strength (Rm) | 520 - 760 MPa |
| Elongation (A) | ≥ 18% |
| Yield to Tensile Ratio | ≤ 0.93 |
| Charpy V-Notch Impact Energy (0°C) | ≥ 40 J |
| Charpy V-Notch Impact Energy (-20°C) | ≥ 27 J |
| Hardness (HV10) | ≤ 250 |
| Fatigue Limit (107 cycles) | 180 - 220 MPa |
| Fracture Toughness (KIC) | ≥ 150 MPa·m1/2 |
| Young's Modulus | 210 GPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1510 - 1540°C |
| Thermal Conductivity (20°C) | 54 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 12×10-6/K |
| Specific Heat Capacity | 500 J/kg·K |
| Electrical Resistivity (20°C) | 0.16 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Curie Temperature | 770°C |
| Poisson's Ratio | 0.27 - 0.30 |
| Thermal Diffusivity | 13.8 mm²/s |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Seamless Pipes, Welded Pipes, Plates, Sheets, Coils |
| Pipe Diameter Range | 21.3 - 1422 mm |
| Wall Thickness Range | 2.0 - 80.0 mm |
| Plate Thickness Range | 5.0 - 100.0 mm |
| Standard Compliance | EN 10208-2, API 5L, ISO 3183, ASTM A106 |
| Surface Finish | Black, Pickled, Oiled, Galvanized |
| End Preparation | Plain End, Beveled End, Threaded |
| Length Range | 5.8 - 18.0 m (Random/Fixed Length) |
| Dimensional Tolerance | ±1% (Diameter), ±10% (Wall Thickness) |
| Testing Requirements | Hydrostatic, Ultrasonic, Eddy Current |
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Our Advantages in Processing EN L415
Advanced Thermomechanical Processing
MetalZenith employs cutting-edge controlled rolling and accelerated cooling technologies, ensuring precise microstructural control and optimal mechanical properties. Our TMCP process delivers consistent grain refinement and enhanced strength-toughness balance throughout the steel matrix.
Comprehensive Quality Control System
Our integrated quality management system features real-time chemical composition monitoring, advanced ultrasonic testing, and comprehensive mechanical property verification. Every batch undergoes rigorous testing including Charpy V-notch impact testing at various temperatures to ensure reliability.
Custom Engineering Solutions
MetalZenith provides tailored steel solutions with custom chemical compositions, specialized heat treatments, and precise dimensional tolerances. Our technical team collaborates with clients to optimize steel properties for specific pipeline applications and environmental conditions.
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