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Technical Specifications
Product Overview
Metallurgical Characteristics
Rail Steel features a fine pearlitic microstructure with optimized cementite lamellae spacing for maximum wear resistance. The high carbon content (0.70-0.82%) combined with controlled manganese levels provides exceptional hardness and strength while maintaining adequate toughness for railway applications. The microstructure is carefully controlled through thermomechanical processing to achieve uniform properties throughout the rail cross-section.
Heat Treatment Process
MetalZenith employs controlled cooling from rolling temperature or normalization at 850-900°C followed by controlled air cooling to achieve optimal pearlitic structure. Our heat treatment process ensures consistent hardness distribution and eliminates residual stresses that could lead to rail distortion or premature failure under service conditions.
Manufacturing Excellence
Our Rail Steel production utilizes advanced electric arc furnace technology with precise chemical composition control, followed by continuous casting and specialized rail rolling mills. MetalZenith's manufacturing process includes real-time quality monitoring, ultrasonic inspection, and dimensional verification to ensure every rail meets stringent railway standards.
Specialized Quality Testing
Rail Steel undergoes comprehensive testing including fatigue strength evaluation under cyclic loading, wear resistance testing using pin-on-disc methods, welding performance assessment for rail joining applications, and atmospheric corrosion resistance testing for various environmental conditions. Our quality assurance program ensures optimal performance in demanding railway infrastructure applications.
Railway Infrastructure Applications
MetalZenith's Rail Steel is engineered for diverse railway applications including high-speed passenger lines requiring smooth surface finish and dimensional precision, heavy haul freight systems demanding maximum wear resistance, urban transit systems with frequent acceleration/deceleration cycles, and specialized industrial railway applications. Our technical team provides application-specific recommendations for optimal rail selection and installation practices.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.70 - 0.82 |
| Manganese (Mn) | 0.80 - 1.30 |
| Silicon (Si) | 0.13 - 0.60 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Chromium (Cr) | 0.15 - 0.30 |
| Vanadium (V) | 0.01 - 0.05 |
| Aluminum (Al) | ≤ 0.004 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 540 |
| Tensile Strength (MPa) | 880 - 1180 |
| Elongation (%) | ≥ 10 |
| Impact Energy at 20°C (J) | ≥ 15 |
| Hardness (HB) | 260 - 300 |
| Fatigue Strength (MPa) | ≥ 300 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1450 - 1520 |
| Thermal Conductivity (W/m·K) | 43.0 |
| Thermal Expansion (×10??/K) | 11.5 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Rail Sections, Bars, Billets, Custom Profiles |
| Rail Weight Range | 30 - 75 kg/m |
| Standard Length | 12 - 25 meters |
| Rail Head Width | 65 - 75mm |
| Standards Compliance | ASTM A1, EN 13674, JIS E1101, AREMA |
| Heat Treatment Condition | Hot Rolled, Normalized, or Heat Treated |
| Surface Finish | Mill Scale, Shot Blasted, or Machined |
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Our Advantages in Processing Rail Steel
Advanced Controlled Rolling Technology
MetalZenith employs precision controlled rolling with optimized temperature profiles and deformation schedules to achieve fine pearlitic microstructure. Our advanced processing ensures consistent hardness distribution and enhanced wear resistance throughout the rail profile, critical for extended service life.
Comprehensive Performance Testing
Our Rail Steel undergoes rigorous testing including fatigue strength evaluation, wear resistance testing, impact toughness assessment, and atmospheric corrosion resistance analysis. MetalZenith's quality assurance ensures superior performance under cyclic loading and environmental exposure conditions.
Custom Rail Profile Manufacturing
MetalZenith offers comprehensive custom rail manufacturing services including specialized profile rolling, precision machining, and heat treatment optimization. Our technical team provides expert consultation for specific railway applications and infrastructure requirements.
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