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Technical Specifications
Product Overview
Metallurgical Structure & Properties
DP 600 dual phase steel features a unique microstructure consisting of approximately 70-80% ferrite matrix with 20-30% martensite islands. This dual phase microstructure is achieved through controlled cooling from the intercritical annealing temperature range (750-850°C), where austenite transforms to martensite while ferrite remains stable. The soft ferrite matrix provides excellent ductility and formability, while the hard martensite islands contribute to high strength and work hardening capacity.
Manufacturing Process
MetalZenith produces DP 600 through advanced hot rolling followed by controlled cooling or cold rolling with continuous annealing. The critical process parameters include precise temperature control during intercritical annealing, controlled cooling rates of 10-50°C/s, and optimized chemical composition. Our state-of-the-art continuous annealing lines ensure uniform microstructure development and consistent mechanical properties across the entire coil width and length.
Heat Treatment & Processing
The steel is supplied in the as-rolled or annealed condition and does not require additional heat treatment. For forming operations, DP 600 exhibits excellent cold formability with superior stretch flangeability compared to conventional high-strength steels. The material can be welded using resistance spot welding, laser welding, and arc welding techniques with appropriate welding parameters and post-weld cooling rates.
Quality Standards & Testing
MetalZenith maintains strict quality control through comprehensive testing protocols including tensile testing per ASTM E8, microstructural analysis, hole expansion testing per ISO 16630, and bend testing per VDA 238-100. All products are manufactured under ISO 9001:2015 and IATF 16949 quality management systems with full traceability and material certification. Statistical process control ensures consistent mechanical properties and dimensional accuracy meeting automotive industry requirements.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.06 - 0.12 |
| Manganese (Mn) | 1.50 - 2.50 |
| Silicon (Si) | 0.10 - 0.50 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.015 |
| Aluminum (Al) | 0.020 - 0.080 |
| Chromium (Cr) | 0.20 - 0.80 |
| Molybdenum (Mo) | 0.10 - 0.30 |
| Vanadium (V) | 0.01 - 0.10 |
| Titanium (Ti) | 0.01 - 0.05 |
| Niobium (Nb) | 0.01 - 0.05 |
| Nitrogen (N) | ≤ 0.010 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 590 - 720 MPa |
| Yield Strength (Rp0.2) | 340 - 420 MPa |
| Elongation (A80) | ≥ 23% |
| Uniform Elongation (Ag) | ≥ 14% |
| Hardness (HV) | 180 - 220 |
| Young's Modulus (E) | 210 GPa |
| Poisson's Ratio | 0.30 |
| Impact Energy (Charpy V-notch at 20°C) | ≥ 80 J |
| Fatigue Limit (107 cycles) | 280 MPa |
| Bend Radius (90° bend) | 1.0t - 1.5t |
| Hole Expansion Ratio (λ) | ≥ 60% |
| n-value (Strain Hardening Exponent) | 0.14 - 0.18 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1510°C |
| Thermal Conductivity (at 20°C) | 50 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 12.5×10-6/K |
| Specific Heat Capacity | 460 J/kg·K |
| Electrical Resistivity (at 20°C) | 0.18 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Curie Temperature | 770°C |
| Thermal Diffusivity | 13.8 mm²/s |
| Emissivity (oxidized surface at 1000°C) | 0.85 |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Hot-rolled sheet/coil, Cold-rolled sheet/coil, Galvanized sheet/coil |
| Thickness Range | 0.8 - 6.0 mm |
| Width Range | 600 - 2100 mm |
| Coil Weight | 5 - 35 tons |
| Sheet Dimensions | 1000×2000 to 2100×6000 mm |
| Standards Compliance | EN 10338, JIS G3135, ASTM A1011, GB/T 5213 |
| Surface Finish | Mill finish, Oiled, Galvanized (Z100-Z450), Galvannealed |
| Edge Condition | Mill edge, Slit edge, Trimmed edge |
| Thickness Tolerance | ±0.02 - ±0.05 mm |
| Width Tolerance | ±2.0 mm |
| Flatness | ≤ 5 I-units |
| Packaging | Coil, Cut-to-length sheets, Custom packaging available |
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Our Advantages in Processing DP 600
Advanced Dual Phase Microstructure Control
MetalZenith employs proprietary controlled cooling technology and precise alloying to achieve optimal ferrite-martensite dual phase microstructure, ensuring consistent mechanical properties and superior formability characteristics essential for complex automotive stamping operations.
Comprehensive Quality Testing & Certification
Our ISO 9001:2015 and IATF 16949 certified facilities conduct extensive mechanical testing, microstructural analysis, and formability evaluation. Every batch includes complete material certification with tensile testing, bend testing, and metallographic verification to automotive industry standards.
Flexible Supply & Custom Processing
MetalZenith offers DP 600 in multiple forms including hot-rolled, cold-rolled, and galvanized variants with custom dimensions, surface treatments, and packaging solutions. Our global supply chain ensures reliable delivery with technical support and engineering consultation for application-specific requirements.
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