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Technical Specifications
Product Overview
Metallurgical Structure
DP 980 features a dual-phase microstructure consisting of approximately 70-80% ferrite matrix with 20-30% martensite islands. This unique microstructure is achieved through controlled thermomechanical processing and intercritical annealing, resulting in excellent strength-ductility balance.
Manufacturing Process
MetalZenith produces DP 980 through advanced hot rolling followed by controlled cooling and cold rolling processes. The steel undergoes continuous annealing at temperatures between 750-820°C in the intercritical region, followed by rapid cooling to achieve the desired dual-phase microstructure. Precise control of cooling rates and temperature profiles ensures consistent mechanical properties.
Heat Treatment
The intercritical annealing process involves heating to the two-phase (ferrite + austenite) region, allowing carbon partitioning into austenite, followed by controlled cooling to transform austenite to martensite. This process can be tailored to achieve specific strength levels and formability requirements.
Quality Standards
MetalZenith maintains strict quality control throughout production, including continuous monitoring of chemical composition, mechanical properties testing, microstructure analysis, and surface quality inspection. All products meet international automotive standards including ASTM A1011, EN 10338, and customer-specific requirements. Comprehensive test certificates are provided with each shipment, including tensile test results, chemical analysis, and dimensional verification.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.06 - 0.12 |
| Manganese (Mn) | 1.20 - 2.50 |
| Silicon (Si) | 0.10 - 0.50 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.015 |
| Chromium (Cr) | 0.20 - 0.60 |
| Molybdenum (Mo) | 0.05 - 0.25 |
| Aluminum (Al) | 0.020 - 0.080 |
| Titanium (Ti) | ≤ 0.050 |
| Niobium (Nb) | ≤ 0.050 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Rm) | 980 - 1180 MPa |
| Yield Strength (Rp0.2) | 550 - 700 MPa |
| Elongation (A80) | ≥ 12% |
| Uniform Elongation (Ag) | ≥ 6% |
| Hardness (HV10) | 300 - 380 |
| Young's Modulus | 210 GPa |
| Poisson's Ratio | 0.30 |
| Impact Energy (Charpy V-notch at 20°C) | ≥ 40 J |
| Fatigue Limit (107 cycles) | 350 - 420 MPa |
| Bending Angle (90°) | 2.0t - 3.0t |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.85 g/cm³ |
| Melting Point | 1510°C |
| Thermal Conductivity (at 20°C) | 52 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 12.5×10-6/K |
| Specific Heat Capacity | 460 J/kg·K |
| Electrical Resistivity | 0.18 µΩ·m |
| Magnetic Permeability | Ferromagnetic |
| Curie Temperature | 770°C |
| Thermal Diffusivity | 14.4 mm²/s |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Hot-rolled sheet, Cold-rolled sheet, Coil, Cut-to-length |
| Thickness Range | 0.8 - 6.0 mm |
| Width Range | 600 - 2100 mm |
| Length Range | 1000 - 6000 mm (cut sheets) |
| Coil Weight | 5 - 35 tons |
| Surface Finish | Mill finish, Oiled, Galvanized, Galvannealed |
| Thickness Tolerance | ±0.02 - ±0.05 mm |
| Width Tolerance | ±2.0 mm |
| Standards Compliance | EN 10338, ASTM A1011, JIS G3135, GB/T 5213 |
| Edge Condition | Mill edge, Trimmed edge, Slit edge |
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Our Advantages in Processing DP 980
Advanced Thermal Processing Technology
MetalZenith utilizes cutting-edge continuous annealing lines with precise temperature control and controlled cooling systems to achieve optimal ferrite-martensite microstructure in DP 980, ensuring consistent mechanical properties and superior formability across all production batches.
Comprehensive Quality Control Systems
Our state-of-the-art testing facilities feature advanced metallographic equipment, universal testing machines, and automated inspection systems. Every batch undergoes rigorous testing for chemical composition, mechanical properties, and microstructure verification to meet automotive industry standards.
Flexible Customization & Global Supply
MetalZenith offers extensive customization options for DP 980 including specific thickness ranges, surface treatments, and cut-to-length services. Our global distribution network ensures reliable supply chain management with just-in-time delivery capabilities worldwide.
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