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Technical Specifications
Product Overview
Metallurgical Characteristics
EN45 is a medium carbon structural steel with a predominantly pearlitic microstructure in the normalized condition. The controlled carbon content provides excellent strength and hardness while maintaining adequate ductility for structural applications. The fine-grained microstructure achieved through controlled rolling enhances both strength and toughness properties.
Heat Treatment Process
MetalZenith employs controlled normalizing at 850-900°C followed by air cooling for optimal microstructural development. For enhanced properties, quenching from 820-860°C followed by tempering at 550-650°C provides superior strength-toughness balance. Our precise temperature control ensures consistent mechanical properties throughout the material cross-section.
Manufacturing Process
Our advanced manufacturing process includes electric arc furnace melting, ladle refining for precise chemistry control, and continuous casting for improved homogeneity. Controlled rolling with optimized reduction schedules ensures fine grain structure and enhanced mechanical properties. Post-rolling heat treatment is carefully controlled to achieve target properties.
Structural Quality Testing
EN45 undergoes comprehensive testing including welding performance evaluation using standard procedures, forming capability assessment through bend tests, fatigue strength testing under cyclic loading, and atmospheric corrosion resistance evaluation. These specialized tests ensure optimal performance in structural applications where reliability is critical.
Application Engineering Considerations
For building construction, EN45 provides excellent load-bearing capacity and seismic resistance. In bridge engineering, its fatigue resistance and weathering properties ensure long-term durability. For machinery manufacturing, the combination of strength and machinability enables complex component fabrication. In vehicle construction, the strength-to-weight ratio optimizes structural efficiency while maintaining safety standards.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.42 - 0.50 |
| Manganese (Mn) | 0.50 - 0.80 |
| Silicon (Si) | 0.10 - 0.40 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | 0.15 - 0.35 |
| Nickel (Ni) | ≤ 0.30 |
| Molybdenum (Mo) | ≤ 0.10 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 355 |
| Tensile Strength (MPa) | 630 - 780 |
| Elongation (%) | ≥ 16 |
| Impact Energy at 20°C (J) | ≥ 35 |
| Hardness (HB) | 180 - 230 |
| Fatigue Strength (MPa) | 280 - 320 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1460 - 1520 |
| Thermal Conductivity (W/m·K) | 42.6 |
| Thermal Expansion (×10??/K) | 11.5 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Bars, Beams, Channels, Angles |
| Thickness Range | 3 - 150mm |
| Width Range | 500 - 3000mm |
| Length Range | 3000 - 12000mm |
| Standards Compliance | EN 10083-2, ASTM A29, JIS G4051 |
| Heat Treatment Condition | Normalized, Quenched & Tempered |
| Surface Finish | Hot Rolled, Cold Drawn, Machined |
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Our Advantages in Processing EN45 Steel
Advanced Heat Treatment Processing
MetalZenith employs controlled quenching and tempering processes with precise temperature monitoring to achieve optimal hardness and strength distribution. Our advanced heat treatment ensures consistent mechanical properties throughout the material cross-section, maximizing structural performance.
Comprehensive Structural Testing
Our EN45 steel undergoes rigorous testing including welding performance evaluation, forming capability assessment, fatigue strength testing, and atmospheric corrosion resistance analysis. This comprehensive testing ensures optimal performance in structural applications.
Custom Fabrication Services
MetalZenith provides complete custom processing services including cutting, machining, heat treatment, and surface finishing. Our technical team offers expert consultation for structural design optimization and material selection guidance.
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