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Technical Specifications
Product Overview
Metallurgical Characteristics
DX51D features a fine-grained ferritic microstructure with controlled interstitial elements, providing excellent formability and weldability. The low carbon content ensures superior ductility while maintaining adequate strength for structural applications. The zinc coating forms a metallurgical bond with the steel substrate through iron-zinc intermetallic layers, providing exceptional corrosion protection.
Heat Treatment Process
MetalZenith employs controlled annealing at 650-750°C followed by rapid cooling to achieve optimal microstructure. The continuous galvanizing process involves heating to 460°C for zinc bath immersion, followed by controlled cooling and zinc layer solidification to ensure uniform coating distribution and optimal adhesion.
Manufacturing Process Excellence
Our advanced production line features precision tension leveling, surface preparation, and continuous galvanizing with real-time coating weight control. MetalZenith's quality systems ensure consistent mechanical properties and surface quality through automated inspection and process monitoring.
Specialized Quality Testing
Comprehensive testing protocols include welding performance evaluation using standard procedures, forming limit analysis through Erichsen cupping tests, fatigue strength assessment under cyclic loading, and accelerated corrosion testing including salt spray exposure. These tests ensure optimal performance in structural applications.
Application Engineering Considerations
For building structures, DX51D provides excellent corrosion resistance in exposed environments. Bridge applications benefit from the material's fatigue resistance and weathering performance. Automotive applications leverage the superior formability and crash performance. Industrial machinery applications utilize the material's weldability and dimensional stability. General engineering applications benefit from the balanced combination of strength, formability, and corrosion protection.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.12 |
| Manganese (Mn) | ≤ 0.60 |
| Silicon (Si) | ≤ 0.50 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.025 |
| Aluminum (Al) | ≥ 0.020 |
| Titanium (Ti) | ≤ 0.15 |
| Zinc Coating (Zn) | 275 g/m2 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | 140 - 300 |
| Tensile Strength (MPa) | 270 - 500 |
| Elongation (%) | ≥ 22 |
| Impact Energy at 20°C (J) | ≥ 27 |
| Hardness (HV) | 120 - 180 |
| Bend Test (180°) | No Cracking |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1510 - 1540 |
| Thermal Conductivity (W/m·K) | 50.2 |
| Thermal Expansion (×10??/K) | 11.8 |
| Elastic Modulus (GPa) | 210 |
| Coating Thickness (μm) | 20 - 25 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Sheets, Coils, Cut-to-Length Plates, Strips |
| Thickness Range | 0.4 - 3.0mm |
| Width Range | 600 - 1500mm |
| Length Range | 1000 - 6000mm |
| Standards Compliance | EN 10346, ASTM A653, JIS G3302 |
| Surface Treatment | Hot-Dip Galvanized Z275 |
| Edge Condition | Mill Edge, Slit Edge, Trimmed Edge |
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Our Advantages in Processing DX51D Steel
Advanced Continuous Galvanizing Process
MetalZenith utilizes cutting-edge continuous hot-dip galvanizing technology with real-time coating weight monitoring and temperature control. Our precision galvanizing process ensures uniform zinc coating distribution and optimal adhesion, delivering superior corrosion protection and surface quality for structural applications.
Comprehensive Structural Performance Testing
Our DX51D steel undergoes extensive testing protocols including welding performance evaluation, forming limit analysis, fatigue strength assessment, and accelerated corrosion testing. MetalZenith's quality assurance ensures optimal performance in demanding structural environments with verified long-term durability.
Custom Processing & Engineering Support
MetalZenith provides tailored processing solutions including precision cutting, forming, and surface preparation services. Our technical team offers comprehensive engineering support for structural design optimization, ensuring DX51D steel meets specific project requirements and performance criteria.
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