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Technical Specifications
Product Overview
Metallurgical Characteristics
Dual Phase Steel features a unique microstructure consisting of approximately 70-85% soft ferrite matrix with 15-30% hard martensite islands. This dual-phase microstructure provides exceptional work hardening behavior, combining the ductility of ferrite with the strength of martensite. The continuous ferrite matrix ensures excellent formability, while dispersed martensite islands contribute to high strength and energy absorption capacity.
Heat Treatment Process
MetalZenith employs controlled intercritical annealing at 750-820°C followed by rapid cooling to achieve optimal dual-phase microstructure. The precise temperature control during intercritical annealing determines the austenite fraction, which transforms to martensite during cooling, while the remaining ferrite provides the ductile matrix. This process is carefully monitored to ensure consistent mechanical properties.
Advanced Manufacturing Process
Our state-of-the-art continuous annealing lines feature precise atmosphere control, uniform heating zones, and controlled cooling sections. Real-time monitoring of carbon potential and temperature profiles ensures consistent dual-phase formation. MetalZenith's advanced process control systems maintain tight tolerances on mechanical properties and microstructural characteristics.
Specialized Quality Testing
Comprehensive testing protocols include welding performance evaluation using standard structural welding procedures, forming limit diagram analysis for complex forming operations, high-cycle fatigue testing under variable amplitude loading, and salt spray corrosion testing per ASTM B117. Microstructural analysis using optical and electron microscopy ensures optimal ferrite-martensite distribution.
Structural Application Considerations
For building construction, Dual Phase Steel offers superior seismic performance through enhanced energy absorption. In bridge engineering, the high strength-to-weight ratio enables longer spans with reduced material usage. Machinery manufacturing benefits from excellent fatigue resistance and formability. Vehicle structural applications leverage the crash energy absorption characteristics. General engineering applications utilize the optimal balance of strength, ductility, and weldability for complex structural designs.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.06 - 0.15 |
| Manganese (Mn) | 1.20 - 2.50 |
| Silicon (Si) | 0.15 - 0.50 |
| Phosphorus (P) | ≤ 0.020 |
| Sulfur (S) | ≤ 0.015 |
| Aluminum (Al) | 0.020 - 0.080 |
| Chromium (Cr) | 0.20 - 0.80 |
| Molybdenum (Mo) | 0.10 - 0.30 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | 350 - 450 |
| Tensile Strength (MPa) | 590 - 780 |
| Elongation (%) | ≥ 24 |
| Impact Energy at 0°C (J) | ≥ 40 |
| Hardness (HV) | 180 - 250 |
| Work Hardening Exponent (n) | 0.14 - 0.18 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1510 - 1540 |
| Thermal Conductivity (W/m·K) | 48.2 |
| Thermal Expansion (×10??/K) | 11.8 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.28 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Coils, Structural Sections, Bars |
| Thickness Range | 1.5 - 25mm |
| Width Range | 600 - 2100mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A1011, EN 10338, JIS G3135 |
| Heat Treatment Condition | Intercritical Annealed + Controlled Cooling |
| Surface Finish | Hot Rolled, Cold Rolled, Galvanized |
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Our Advantages in Processing Dual Phase Steel
Advanced Dual-Phase Microstructure Control
MetalZenith employs precise intercritical annealing and controlled cooling processes with real-time temperature monitoring to achieve optimal ferrite-martensite distribution. Our advanced processing ensures consistent dual-phase microstructure with enhanced work hardening capability and superior strength-ductility balance throughout the material thickness.
Comprehensive Structural Performance Testing
MetalZenith conducts extensive structural-specific testing including advanced welding performance evaluation, cold forming assessments, fatigue strength analysis under cyclic loading, and accelerated atmospheric corrosion testing. Our specialized testing protocols ensure optimal performance in demanding structural applications.
Custom Structural Solutions & Engineering Support
MetalZenith provides tailored processing solutions including custom heat treatment cycles, precision forming services, and comprehensive technical support for structural design optimization. Our engineering team collaborates with clients to develop application-specific solutions for complex structural challenges.
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