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Technical Specifications
Product Overview
Metallurgical Characteristics
Leaf Spring Steel features a tempered martensitic microstructure with fine carbide distribution, providing optimal combination of strength, elasticity, and fatigue resistance. The controlled silicon content enhances spring properties while chromium and vanadium additions improve hardenability and grain refinement for superior structural performance.
Heat Treatment Process
MetalZenith employs precise austenitizing at 850-870°C followed by oil quenching and tempering at 420-480°C to achieve optimal hardness and spring characteristics. Our controlled cooling rates and tempering cycles ensure uniform microstructure and enhanced fatigue life for demanding structural applications.
Manufacturing Excellence
Our advanced production process includes vacuum degassing, controlled rolling, and precision heat treatment with real-time monitoring. MetalZenith's quality systems ensure consistent mechanical properties, dimensional accuracy, and surface quality critical for automotive and structural spring applications.
Specialized Testing & Quality Control
Comprehensive testing includes fatigue strength evaluation under cyclic loading, forming performance assessment for spring manufacturing, welding compatibility testing for structural joints, and atmospheric corrosion resistance verification. Our quality protocols ensure reliable performance in vehicle manufacturing and general engineering applications.
Application Engineering
For automotive suspension systems, our steel provides exceptional load-bearing capacity and ride comfort. In heavy machinery applications, the superior fatigue resistance ensures extended service life. Bridge engineering and structural applications benefit from the material's predictable elastic behavior and resistance to stress concentration failures.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.50 - 0.60 |
| Manganese (Mn) | 0.70 - 1.00 |
| Silicon (Si) | 1.50 - 2.00 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | 0.70 - 1.00 |
| Vanadium (V) | 0.15 - 0.25 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 1200 |
| Tensile Strength (MPa) | 1400 - 1600 |
| Elongation (%) | ≥ 8 |
| Impact Energy at 20°C (J) | ≥ 15 |
| Hardness (HRC) | 42 - 48 |
| Fatigue Strength (MPa) | ≥ 600 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1480 - 1520 |
| Thermal Conductivity (W/m·K) | 42.6 |
| Thermal Expansion (×10??/K) | 11.5 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Flat Bars, Round Bars, Strips, Custom Profiles |
| Thickness Range | 3 - 25mm |
| Width Range | 25 - 200mm |
| Length Range | 1000 - 12000mm |
| Standards Compliance | SAE 5160, ASTM A689, EN 10089 |
| Heat Treatment Condition | Quenched and Tempered |
| Surface Finish | Hot Rolled, Cold Drawn, Peeled |
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Our Advantages in Processing Leaf Spring Steel
Precision Heat Treatment Technology
MetalZenith utilizes advanced quenching and tempering processes with precise temperature control and controlled cooling rates to achieve optimal hardness distribution and spring characteristics. Our specialized heat treatment ensures consistent mechanical properties and enhanced fatigue resistance throughout the material cross-section.
Comprehensive Fatigue Testing
Our quality assurance includes extensive fatigue strength testing, stress-strain analysis, and spring rate verification to ensure superior performance under cyclic loading. MetalZenith conducts specialized testing for forming characteristics, weldability assessment, and atmospheric corrosion resistance to guarantee long-term reliability.
Custom Spring Engineering Solutions
MetalZenith provides comprehensive technical support including custom spring design, specialized forming processes, and application-specific heat treatment. Our engineering team offers complete solutions from material selection to final spring manufacturing with precise dimensional control and performance optimization.
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