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Technical Specifications
Product Overview
Metallurgical Characteristics
EN L245 is a low-carbon microalloyed steel with a predominantly ferritic-pearlitic microstructure. The controlled addition of microalloying elements such as vanadium and niobium provides grain refinement and precipitation strengthening, resulting in improved strength-toughness balance.
Manufacturing Process
MetalZenith produces EN L245 steel through advanced steelmaking processes including electric arc furnace melting, ladle refining, and continuous casting. The steel undergoes controlled rolling in the austenite region followed by accelerated cooling to achieve the desired mechanical properties and microstructure.
Heat Treatment
EN L245 steel is typically supplied in the normalized or thermomechanically processed condition. Normalizing is performed at 900-950°C followed by air cooling. For enhanced properties, controlled rolling with finish rolling temperatures of 750-850°C may be employed.
Welding Characteristics
The low carbon equivalent (CE ≤ 0.43%) ensures excellent weldability without preheating for most applications. Common welding processes include SMAW, GMAW, GTAW, and SAW. Post-weld heat treatment is generally not required for thicknesses up to 25mm.
Quality Standards
MetalZenith's EN L245 steel complies with EN 10208-1 for steel pipes for pressure purposes, API 5L for line pipe, and ISO 3183 for petroleum and natural gas industries. All products undergo rigorous testing including chemical analysis, tensile testing, impact testing, hardness testing, and non-destructive examination.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.21 |
| Manganese (Mn) | ≤ 1.20 |
| Silicon (Si) | ≤ 0.40 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.015 |
| Chromium (Cr) | ≤ 0.30 |
| Nickel (Ni) | ≤ 0.30 |
| Molybdenum (Mo) | ≤ 0.15 |
| Copper (Cu) | ≤ 0.50 |
| Vanadium (V) | ≤ 0.06 |
| Niobium (Nb) | ≤ 0.05 |
| Titanium (Ti) | ≤ 0.04 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (Rt0.5) | 245-450 MPa |
| Tensile Strength (Rm) | 415-565 MPa |
| Elongation (A) | ≥ 22% |
| Yield to Tensile Ratio | ≤ 0.93 |
| Charpy V-Notch Impact Energy (0°C) | ≥ 27 J |
| Hardness (HV10) | ≤ 250 |
| Young's Modulus | 210 GPa |
| Poisson's Ratio | 0.30 |
| Fatigue Limit (10^7 cycles) | 180 MPa |
| Fracture Toughness (KIC) | 120-150 MPa·m^0.5 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1510°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 |
| Thermal Diffusivity | 13.7 mm²/s |
| Emissivity (oxidized surface) | 0.85 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Seamless Pipes, Welded Pipes, Plates, Sheets, Coils |
| Pipe Diameter Range | 21.3mm - 1422mm (NPS 1/2 - 56) |
| Wall Thickness | 2.0mm - 80mm |
| Plate Thickness | 6mm - 100mm |
| Length Range | 5.8m - 18m (Random/Fixed Length) |
| Standards Compliance | EN 10208-1, API 5L, ISO 3183, ASTM A53 |
| Surface Finish | Black, Galvanized, 3PE Coated, FBE Coated |
| End Preparation | Plain End, Beveled End, Threaded |
| Dimensional Tolerance | ±1% (Diameter), ±12.5% (Wall Thickness) |
| Testing Requirements | Hydrostatic Test, NDT, Chemical Analysis, Mechanical Testing |
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Our Advantages in Processing EN L245
Advanced Thermomechanical Processing
MetalZenith employs cutting-edge controlled rolling and accelerated cooling technology to achieve optimal grain refinement and enhanced mechanical properties in EN L245 steel, ensuring superior toughness and uniform microstructure throughout the material.
Comprehensive Quality Control System
Our state-of-the-art testing laboratory conducts 100% ultrasonic inspection, chemical analysis, and mechanical testing on every batch. Advanced NDT equipment and certified metallurgists ensure EN L245 steel meets the strictest international pipeline standards.
Custom Processing & Global Supply
MetalZenith offers tailored processing solutions including custom dimensions, surface treatments, and specialized heat treatments. Our global logistics network ensures timely delivery of EN L245 steel products worldwide with complete documentation and certification.
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