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Technical Specifications
Product Overview
Metallurgical Structure
DP 590 features a dual phase microstructure consisting of approximately 70-80% ferrite matrix with 20-30% martensite islands. This unique microstructure is achieved through MetalZenith's controlled intercritical annealing process followed by rapid cooling. The ferrite phase provides excellent formability and ductility, while the martensite islands contribute to high strength and work hardening capacity.
Manufacturing Process
MetalZenith employs advanced continuous annealing technology with precise temperature control in the intercritical range (750-800°C). The steel undergoes controlled cooling at rates of 10-50°C/s to achieve optimal phase transformation. Our integrated hot-dip galvanizing lines provide superior corrosion protection while maintaining mechanical properties through careful thermal management.
Heat Treatment Response
DP 590 exhibits excellent bake hardening characteristics, gaining 30-50 MPa additional strength during paint bake cycles (170°C for 20 minutes). The steel maintains formability at room temperature while developing enhanced strength after forming operations. Welding characteristics are optimized through controlled carbon equivalent and microalloying additions.
Quality Standards
MetalZenith's DP 590 production meets stringent automotive quality requirements including ISO/TS 16949, VDA 6.1, and customer-specific standards. Comprehensive testing protocols include tensile testing per ASTM A370, hole expansion testing per ISO 16630, and microstructural analysis using advanced metallography and electron microscopy techniques.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.06 - 0.12 |
| Manganese (Mn) | 1.60 - 2.00 |
| Silicon (Si) | 0.20 - 0.50 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.015 |
| Aluminum (Al) | 0.020 - 0.060 |
| Chromium (Cr) | 0.30 - 0.60 |
| Molybdenum (Mo) | 0.15 - 0.25 |
| Niobium (Nb) | 0.015 - 0.050 |
| Titanium (Ti) | 0.010 - 0.040 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 590 - 720 MPa |
| Yield Strength (Rp0.2) | ≥ 340 MPa |
| Elongation (A80) | ≥ 24% |
| Uniform Elongation (Ag) | ≥ 14% |
| Hole Expansion Ratio (λ) | ≥ 60% |
| Bake Hardening (BH2) | ≥ 30 MPa |
| r-value (Average) | 0.7 - 1.0 |
| n-value (Work Hardening) | 0.14 - 0.18 |
| Hardness (HV) | 180 - 220 |
| Fatigue Limit (10&sup7; cycles) | 280 - 320 MPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Young's Modulus | 210 GPa |
| Poisson's Ratio | 0.30 |
| Thermal Expansion Coefficient (20-100°C) | 12×10-6/K |
| Thermal Conductivity (20°C) | 50 W/m·K |
| Specific Heat Capacity | 460 J/kg·K |
| Electrical Resistivity | 0.18 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Melting Point Range | 1450-1520°C |
| Curie Temperature | 770°C |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Cold Rolled Sheet, Hot-Dip Galvanized, Electrogalvanized |
| Thickness Range | 0.6 - 3.0 mm |
| Width Range | 600 - 1880 mm |
| Coil Weight | Up to 25 tons |
| Surface Finish | Skin Pass, Temper Rolling, Oiled/Dry |
| Coating Weight (Galvanized) | 60-275 g/m² (both sides) |
| Edge Condition | Mill Edge, Trimmed Edge |
| Standards Compliance | EN 10338, ASTM A1088, JIS G3135 |
| Thickness Tolerance | ±0.02 mm |
| Width Tolerance | +0/-3 mm |
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Our Advantages in Processing DP 590
Advanced Dual Phase Microstructure Control
MetalZenith's proprietary continuous annealing technology with precise temperature and cooling rate control ensures optimal ferrite-martensite balance, delivering consistent mechanical properties and superior formability compared to conventional processing methods.
Comprehensive Quality Testing Systems
Our integrated quality control laboratory features advanced metallographic analysis, automated tensile testing, and real-time microstructural monitoring to guarantee DP 590 specifications with statistical process control and full material traceability.
Flexible Production & Custom Solutions
MetalZenith offers extensive customization capabilities including various coating options, precise thickness control, and tailored mechanical properties to meet specific automotive OEM requirements with just-in-time delivery and global supply chain support.
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