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Technical Specifications
Product Overview
Metallurgical Characteristics
DP780 features a sophisticated dual-phase microstructure consisting of a soft ferrite matrix (60-80%) reinforced with hard martensite islands (20-40%). This unique microstructural arrangement provides exceptional work hardening behavior and continuous yielding characteristics, making it ideal for complex forming operations in structural applications. The fine-grained ferrite matrix ensures excellent ductility while the dispersed martensite phase contributes to high strength and enhanced energy absorption capabilities.
Heat Treatment Process
MetalZenith employs advanced continuous annealing technology with precise intercritical temperature control at 750-820°C, followed by controlled cooling to achieve optimal dual-phase microstructure. Our proprietary thermal cycle includes rapid cooling through the critical temperature range to form the desired martensite fraction, ensuring consistent mechanical properties and superior formability characteristics essential for structural applications.
Manufacturing Process Excellence
Our state-of-the-art production facility utilizes controlled rolling technology combined with precision annealing to achieve uniform microstructure distribution. Advanced process control systems monitor chemical composition, temperature profiles, and cooling rates in real-time, ensuring consistent quality and mechanical properties throughout each coil and batch for reliable structural performance.
Specialized Quality Testing
MetalZenith conducts comprehensive testing protocols specifically designed for structural applications: resistance spot welding performance evaluation using automotive industry standards, complex forming limit analysis through Nakajima testing, high-cycle fatigue testing under variable amplitude loading, and salt spray corrosion testing per ASTM B117 to validate atmospheric corrosion resistance for outdoor structural applications.
Structural Application Engineering
For building construction and bridge engineering applications, DP780's high strength-to-weight ratio enables lighter structural designs while maintaining safety factors. In automotive chassis and machinery manufacturing, the excellent formability allows for complex geometries without compromising structural integrity. The superior energy absorption characteristics make it particularly suitable for safety-critical structural components in vehicle manufacturing and general engineering applications where impact resistance is paramount.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.05 - 0.10 |
| Manganese (Mn) | 1.50 - 2.50 |
| Silicon (Si) | 0.20 - 0.70 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.015 |
| Aluminum (Al) | 0.020 - 0.070 |
| Chromium (Cr) | 0.10 - 0.50 |
| Molybdenum (Mo) | 0.05 - 0.25 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | 480 - 600 |
| Tensile Strength (MPa) | 780 - 950 |
| Elongation (%) | ≥ 14 |
| Impact Energy at 20°C (J) | ≥ 40 |
| Hardness (HV) | 240 - 300 |
| Fatigue Strength (MPa) | ≥ 350 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1510 - 1540 |
| Thermal Conductivity (W/m·K) | 48.5 |
| Thermal Expansion (×10??/K) | 11.8 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Sheets, Coils, Plates, Strips, Custom Blanks |
| Thickness Range | 0.5 - 8.0mm |
| Width Range | 600 - 2100mm |
| Length Range | 1000 - 6000mm |
| Standards Compliance | ASTM A1011, SAE J2340, EN 10338 |
| Surface Condition | Hot Rolled, Cold Rolled, Galvanized |
| Heat Treatment | Continuous Annealed, Dual Phase |
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Our Advantages in Processing DP780 Steel
Advanced Dual-Phase Microstructure Control
MetalZenith utilizes precision intercritical annealing with controlled cooling rates to achieve optimal ferrite-martensite microstructure balance. Our advanced thermal processing ensures consistent mechanical properties and superior formability while maintaining high strength characteristics throughout the material.
Comprehensive Structural Performance Testing
Our quality assurance program includes specialized testing for structural applications: advanced welding performance evaluation, complex forming simulation testing, high-cycle fatigue strength assessment, and accelerated atmospheric corrosion resistance testing to ensure optimal performance in demanding structural environments.
Custom Processing and Engineering Support
MetalZenith provides tailored processing solutions including custom heat treatment cycles, precision forming services, and comprehensive technical support. Our engineering team offers application-specific guidance for structural design optimization and manufacturing process development.
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