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Technical Specifications
Product Overview
Metallurgical Characteristics
HSLA-80 exhibits a fine-grained tempered martensitic or bainitic microstructure achieved through controlled cooling and precise alloying. The strategic addition of vanadium, molybdenum, and chromium promotes carbide precipitation strengthening while maintaining excellent toughness. Grain refinement through microalloying elements ensures superior strength-to-weight ratios and enhanced fatigue resistance critical for high-stress applications.
Heat Treatment Process
MetalZenith employs controlled quenching from 900-950°C followed by tempering at 580-650°C to achieve optimal strength-toughness balance. Our advanced TMCP route utilizes controlled rolling in the austenite recrystallization region followed by accelerated cooling, eliminating the need for separate heat treatment while achieving superior mechanical properties.
Manufacturing Excellence
MetalZenith's production process incorporates real-time microstructure monitoring and adaptive process control to ensure consistent mechanical properties. Our advanced ladle metallurgy and continuous casting techniques minimize segregation and optimize cleanliness levels, critical for achieving the demanding specifications of HSLA-80 applications.
Specialized Quality Testing
Comprehensive testing protocols include formability assessment through limiting dome height testing, weldability evaluation using controlled thermal severity tests, hydrogen-induced cracking resistance testing per NACE TM0284, and delayed fracture susceptibility analysis. Advanced non-destructive testing ensures internal soundness and structural integrity for critical applications.
Application-Specific Considerations
For automotive applications, HSLA-80 provides exceptional crash energy absorption and weight reduction potential. In building construction, the high strength enables reduced member sizes and improved seismic performance. Bridge applications benefit from superior fatigue resistance and corrosion performance. Heavy machinery applications leverage the combination of high strength and excellent machinability, while pressure vessel applications utilize the superior through-thickness properties and hydrogen resistance.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.20 |
| Manganese (Mn) | 0.60 - 1.60 |
| Silicon (Si) | 0.15 - 0.50 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | 0.40 - 0.65 |
| Nickel (Ni) | 0.25 - 1.00 |
| Molybdenum (Mo) | 0.15 - 0.50 |
| Vanadium (V) | 0.03 - 0.08 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 550 |
| Tensile Strength (MPa) | 620 - 760 |
| Elongation (%) | ≥ 18 |
| Impact Energy at -40°C (J) | ≥ 34 |
| Fatigue Strength (MPa) | ≥ 280 |
| Hardness (HB) | 170 - 230 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1480 - 1520 |
| Thermal Conductivity (W/m·K) | 44.5 |
| Thermal Expansion (×10??/K) | 12.3 |
| Elastic Modulus (GPa) | 200 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Bars, Structural Sections, Forgings |
| Thickness Range | 3 - 150mm |
| Width Range | 1000 - 3500mm |
| Length Range | 6000 - 15000mm |
| Standards Compliance | ASTM A514, ASTM A709 Grade 80, EN 10025-6 |
| Heat Treatment Condition | Quenched and Tempered or TMCP |
| Surface Finish | Hot Rolled, Normalized, Shot Blasted |
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Our Advantages in Processing HSLA-80 Steel
Advanced Thermomechanical Processing
MetalZenith utilizes cutting-edge TMCP technology with precise temperature control and optimized cooling rates to achieve fine-grain microstructures and enhanced precipitation strengthening. Our controlled rolling process ensures uniform mechanical properties and superior fatigue resistance throughout the material thickness.
Comprehensive High-Strength Testing
MetalZenith conducts specialized testing protocols including formability analysis, weldability assessments, hydrogen-induced cracking resistance evaluation, and delayed fracture testing. Our advanced quality control ensures optimal performance in critical high-stress applications with complete material traceability.
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 engineering support for optimizing HSLA-80 steel performance in demanding structural applications.
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