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Technical Specifications
Product Overview
Metallurgical Characteristics
TRIP steel features a complex multiphase microstructure consisting of ferrite, bainite, and 5-15% retained austenite. The transformation-induced plasticity mechanism occurs when retained austenite transforms to martensite under applied stress, providing exceptional work hardening and energy absorption capabilities essential for structural applications.
Heat Treatment Process
MetalZenith employs intercritical annealing at 750-850°C followed by isothermal holding at 350-450°C to optimize bainite formation and carbon partitioning. This controlled process ensures optimal retained austenite stability and mechanical property balance for structural performance.
Manufacturing Process Excellence
Our advanced continuous annealing lines feature precise atmosphere control, rapid heating and cooling capabilities, and real-time microstructural monitoring. MetalZenith's process control ensures consistent retained austenite content and mechanical properties across all production batches.
Specialized Quality Testing
Comprehensive testing includes X-ray diffraction for retained austenite quantification, advanced welding performance evaluation using multiple welding processes, complex forming simulation testing, fatigue strength analysis up to 10? cycles, and atmospheric corrosion resistance testing per ASTM G85 standards.
Structural Application Engineering
For building structures, TRIP steel provides enhanced seismic resistance through superior energy absorption. In bridge engineering, the excellent fatigue performance ensures long-term durability. Automotive and machinery applications benefit from the exceptional crash performance and formability, while general engineering applications utilize the optimal strength-to-weight ratio for efficient structural design.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.15 - 0.25 |
| Manganese (Mn) | 1.20 - 2.00 |
| Silicon (Si) | 0.80 - 1.50 |
| Aluminum (Al) | 0.020 - 0.060 |
| Phosphorus (P) | ≤ 0.080 |
| Sulfur (S) | ≤ 0.015 |
| Chromium (Cr) | 0.30 - 0.80 |
| Molybdenum (Mo) | 0.10 - 0.30 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | 400 - 600 |
| Tensile Strength (MPa) | 600 - 950 |
| Elongation (%) | ≥ 25 |
| Impact Energy at 20°C (J) | ≥ 80 |
| Hardness (HV) | 180 - 280 |
| n-value (Strain Hardening) | 0.20 - 0.30 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1480 - 1520 |
| Thermal Conductivity (W/m·K) | 42.5 |
| Thermal Expansion (×10??/K) | 12.5 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.28 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Sheets, Coils, Plates, Strips, Custom Profiles |
| Thickness Range | 0.5 - 8.0mm |
| Width Range | 600 - 2100mm |
| Length Range | 1000 - 6000mm |
| Standards Compliance | ASTM A1011, EN 10338, JIS G3135 |
| Surface Finish | Hot Rolled, Cold Rolled, Galvanized |
| Heat Treatment Condition | Intercritical Annealed + Controlled Cooling |
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Our Advantages in Processing TRIP Steel
Advanced Intercritical Annealing Process
MetalZenith utilizes precisely controlled intercritical annealing with real-time temperature monitoring and controlled cooling rates to optimize the multiphase microstructure. Our advanced processing ensures optimal retained austenite content and carbon partitioning for maximum TRIP effect activation.
Comprehensive Structural Performance Testing
Our quality assurance includes specialized testing for structural applications: advanced welding performance evaluation, complex forming simulation testing, high-cycle fatigue strength analysis, and accelerated atmospheric corrosion resistance testing to ensure superior performance in demanding structural environments.
Custom Structural Solutions & Engineering Support
MetalZenith provides tailored TRIP steel solutions with custom chemical compositions, specialized heat treatments, and comprehensive technical support. Our engineering team offers application-specific optimization for structural designs, forming process consultation, and ongoing technical assistance.
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