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Technical Specifications
Product Overview
Metallurgical Characteristics
Hypoeutectoid steel exhibits a dual-phase microstructure consisting of proeutectoid ferrite and pearlite colonies. The ferrite phase provides excellent ductility and toughness, while the pearlite contributes to strength and hardness. The carbon content below the eutectoid composition (0.77%) ensures optimal balance between strength and formability, making it ideal for structural applications requiring both load-bearing capacity and fabrication flexibility.
Heat Treatment Process
MetalZenith employs controlled cooling from the austenite region at 850-900°C to achieve optimal ferrite-pearlite distribution. Our normalization process involves heating to 900-950°C followed by air cooling to refine grain structure and improve mechanical properties. Stress relief annealing at 600-650°C may be applied for enhanced dimensional stability in critical structural components.
Advanced Manufacturing Process
Our production process incorporates controlled rolling technology with precise temperature monitoring throughout the hot rolling sequence. MetalZenith's thermomechanical controlled processing (TMCP) optimizes grain refinement and enhances impact toughness while maintaining excellent weldability. Real-time microstructure monitoring ensures consistent quality and performance characteristics.
Specialized Quality Testing
Comprehensive testing protocols include welding performance evaluation using standard procedures (SMAW, GMAW, SAW), bend testing for formability assessment, rotating beam fatigue testing for endurance limit determination, and salt spray testing for atmospheric corrosion resistance. Charpy V-notch impact testing at various temperatures ensures reliable performance in diverse environmental conditions.
Application Engineering Considerations
For building construction, our hypoeutectoid steel provides excellent seismic resistance and fire performance. Bridge applications benefit from superior fatigue resistance and weathering characteristics. Machinery manufacturing applications leverage the material's machinability and dimensional stability. Automotive structural components utilize the steel's crash energy absorption and forming capabilities. General engineering projects benefit from the versatile combination of strength, ductility, and cost-effectiveness.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.25 - 0.75 |
| Manganese (Mn) | 0.60 - 1.65 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Copper (Cu) | 0.20 - 0.50 |
| Chromium (Cr) | ≤ 0.30 |
| Nickel (Ni) | ≤ 0.30 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | 250 - 450 |
| Tensile Strength (MPa) | 400 - 650 |
| Elongation (%) | ≥ 20 |
| Impact Energy at 20°C (J) | ≥ 27 |
| Hardness (HB) | 120 - 200 |
| Fatigue Strength (MPa) | 180 - 280 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1450 - 1520 |
| 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, Beams, Angles, Channels, Bars |
| Thickness Range | 3 - 150mm |
| Width Range | 1000 - 3500mm |
| Length Range | 6000 - 15000mm |
| Standards Compliance | ASTM A36, ASTM A572, EN 10025 |
| Heat Treatment Condition | Hot Rolled, Normalized, or As-Rolled |
| Surface Finish | Mill Scale, Pickled, Shot Blasted |
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Our Advantages in Processing Hypoeutectoid Steel
Controlled Rolling Technology
MetalZenith utilizes advanced controlled rolling processes with precise temperature control to optimize the ferrite-pearlite microstructure in hypoeutectoid steel. Our thermomechanical processing ensures uniform grain size distribution and enhanced mechanical properties throughout the material cross-section.
Comprehensive Performance Testing
Our quality assurance program includes specialized testing for structural applications: welding performance evaluation, bend testing for formability, rotating beam fatigue testing, and accelerated atmospheric corrosion testing to ensure superior performance in construction and engineering environments.
Custom Fabrication Services
MetalZenith offers comprehensive custom processing services including cutting, forming, welding preparation, and heat treatment optimization. Our technical team provides expert consultation for structural design requirements and application-specific material modifications.
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