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Technical Specifications
Product Overview
Metallurgical Characteristics
High Yield Steel features a refined ferritic-pearlitic microstructure with fine precipitates of microalloying elements. The controlled addition of niobium, vanadium, and titanium promotes grain refinement through precipitation strengthening and grain boundary pinning, resulting in enhanced yield strength while maintaining excellent toughness and ductility.
Heat Treatment Process
MetalZenith employs thermomechanical controlled processing (TMCP) with controlled rolling temperatures between 850-950°C followed by accelerated cooling. This process optimizes the austenite-to-ferrite transformation, ensuring fine grain structure and optimal precipitation of strengthening phases for maximum yield strength development.
Manufacturing Process
Our advanced manufacturing process includes electric arc furnace melting with precise chemistry control, continuous casting with electromagnetic stirring, and multi-pass controlled rolling with real-time temperature monitoring. Post-rolling accelerated cooling and stress relieving ensure dimensional stability and consistent mechanical properties throughout the material cross-section.
Specialized Quality Testing
MetalZenith conducts comprehensive testing protocols specific to high-strength applications including forming limit diagram analysis for automotive applications, Charpy V-notch impact testing at various temperatures, hydrogen-induced cracking (HIC) resistance testing per NACE TM0284, delayed fracture testing under sustained loading, and comprehensive weldability assessment including heat-affected zone (HAZ) hardness evaluation.
Application-Specific Technical Considerations
For automotive manufacturing, our High Yield Steel offers excellent deep drawing characteristics and crash energy absorption. In building construction, the steel provides superior seismic resistance and reduced structural weight. Bridge applications benefit from enhanced fatigue resistance and weather durability. Crane and lifting equipment applications leverage the high strength-to-weight ratio for increased load capacity. Pressure vessel applications utilize the steel's resistance to hydrogen embrittlement and excellent weldability for critical pressure-containing components.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.23 |
| Manganese (Mn) | 1.00 - 1.65 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Niobium (Nb) | 0.005 - 0.050 |
| Vanadium (V) | 0.01 - 0.15 |
| Titanium (Ti) | 0.006 - 0.024 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 345 |
| Tensile Strength (MPa) | 450 - 620 |
| Elongation (%) | ≥ 21 |
| Impact Energy at 0°C (J) | ≥ 27 |
| Fatigue Strength (MPa) | 160 - 200 |
| Hardness (HB) | 140 - 190 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1510 - 1540 |
| Thermal Conductivity (W/m·K) | 50.2 |
| Thermal Expansion (×10??/K) | 11.8 |
| Elastic Modulus (GPa) | 200 |
| Poisson's Ratio | 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Beams, Channels, Angles, Bars |
| Thickness Range | 3 - 150mm |
| Width Range | 1000 - 3500mm |
| Length Range | 6000 - 15000mm |
| Standards Compliance | ASTM A572, ASTM A992, EN 10025-4 |
| Heat Treatment Condition | Hot Rolled, TMCP, Normalized |
| Surface Finish | Mill Scale, Shot Blasted, Pickled |
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Our Advantages in Processing High Yield Steel
Advanced Thermomechanical Processing
MetalZenith utilizes state-of-the-art TMCP technology with precise temperature control and controlled rolling schedules to achieve optimal grain structure and enhanced precipitation strengthening. Our advanced processing ensures superior yield strength while maintaining excellent toughness and formability characteristics essential for high-strength applications.
Comprehensive High-Strength Testing
MetalZenith conducts specialized testing protocols including forming limit analysis, weldability assessment, hydrogen-induced cracking resistance testing, and delayed fracture evaluation. Our comprehensive quality assurance ensures optimal performance in demanding applications requiring high strength and reliability.
Custom Engineering Solutions
MetalZenith provides tailored processing solutions including custom heat treatment schedules, precision cutting, and application-specific forming services. Our technical team offers comprehensive support for optimizing High Yield Steel performance in automotive, structural, and pressure vessel applications.
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