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Technical Specifications
Product Overview
Metallurgical Characteristics
HSLA 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. This results in superior strength-to-weight ratios while maintaining excellent toughness and formability characteristics essential for structural applications.
Heat Treatment Process
MetalZenith employs thermomechanical controlled processing (TMCP) with controlled rolling temperatures between 850-950°C followed by accelerated cooling. This process optimizes austenite conditioning and promotes fine ferrite grain formation with uniform precipitation distribution, ensuring consistent mechanical properties and enhanced fatigue resistance.
Manufacturing Process
Our advanced manufacturing process includes electric arc furnace melting with precise alloy addition control, continuous casting with electromagnetic stirring, and multi-pass controlled rolling with real-time temperature monitoring. MetalZenith's integrated quality management system ensures consistent chemical composition and mechanical properties throughout production.
Specialized Quality Testing
HSLA steel undergoes comprehensive testing including formability assessment through limiting dome height (LDH) testing, weldability evaluation with controlled thermal severity (CTS) testing, hydrogen-induced cracking (HIC) resistance testing in NACE solutions, and delayed fracture testing under sustained loading conditions to ensure reliability in critical applications.
Application-Specific Considerations
For automotive applications, HSLA steel provides excellent crash energy absorption and weight reduction capabilities. In building construction, it enables longer spans and reduced structural weight. Bridge applications benefit from superior fatigue resistance and corrosion performance. Lifting equipment applications leverage the high strength-to-weight ratio for increased payload capacity. Pressure vessel applications utilize the excellent through-thickness properties and hydrogen resistance for safe operation under demanding conditions.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.23 |
| Manganese (Mn) | 0.50 - 1.65 |
| Silicon (Si) | 0.15 - 0.50 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Niobium (Nb) | 0.005 - 0.050 |
| Vanadium (V) | 0.01 - 0.15 |
| Titanium (Ti) | 0.006 - 0.050 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | 345 - 690 |
| Tensile Strength (MPa) | 450 - 760 |
| Elongation (%) | ≥ 18 |
| Impact Energy at -40°C (J) | ≥ 27 |
| Fatigue Strength (MPa) | 200 - 350 |
| Hardness (HB) | 140 - 230 |
🔬 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 | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Coils, Bars, Structural Sections |
| Thickness Range | 1.5 - 150mm |
| Width Range | 600 - 3500mm |
| Length Range | 2000 - 16000mm |
| Standards Compliance | ASTM A572, ASTM A588, ASTM A242, EN 10149 |
| Heat Treatment Condition | Hot Rolled, TMCP, Normalized |
| Surface Finish | Mill Scale, Pickled, Shot Blasted |
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Our Advantages in Processing HSLA Steel
Advanced Thermomechanical Processing
MetalZenith utilizes cutting-edge TMCP technology with precise temperature control and optimized rolling schedules to achieve superior grain refinement and precipitation strengthening. Our controlled cooling processes ensure consistent mechanical properties and enhanced fatigue resistance throughout the material thickness.
Comprehensive Performance Testing
Our HSLA steel undergoes extensive testing including formability analysis, weldability assessment, hydrogen-induced cracking resistance evaluation, and delayed fracture testing. MetalZenith's advanced testing protocols ensure optimal performance in critical applications requiring high strength and reliability.
Custom Engineering Solutions
MetalZenith provides tailored HSLA steel solutions with customized chemical compositions, mechanical properties, and processing parameters to meet specific application requirements. Our technical team offers comprehensive support for material selection, forming processes, and welding procedures.
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