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Technical Specifications
Product Overview
Metallurgical Characteristics
St 52 exhibits a fine-grained ferritic-pearlitic microstructure achieved through controlled rolling and normalization processes. The optimized carbon content and manganese addition provide excellent strength while maintaining superior weldability. Aluminum deoxidation ensures clean steel with minimal inclusions, contributing to enhanced impact toughness and fatigue resistance essential for structural applications.
Heat Treatment Process
MetalZenith employs controlled rolling at temperatures between 1050-1150°C followed by normalization at 880-920°C with controlled cooling rates. This thermomechanical processing optimizes grain size and ensures uniform mechanical properties throughout the cross-section while maintaining excellent formability for structural fabrication.
Manufacturing Excellence
Our advanced production process incorporates continuous casting, controlled rolling mills, and precision heat treatment facilities. Real-time monitoring of chemical composition and mechanical properties ensures consistent quality. Special attention to sulfur and phosphorus control enhances weldability and reduces susceptibility to hot cracking during fabrication.
Structural Performance Testing
MetalZenith conducts comprehensive testing protocols including welding procedure qualification, bend testing for formability assessment, rotating beam fatigue testing, and accelerated atmospheric corrosion testing. Charpy V-notch impact testing at various temperatures ensures reliable performance in diverse environmental conditions typical of structural applications.
Application Engineering
For building construction, St 52's high strength-to-weight ratio enables optimized structural designs with reduced material usage. In bridge engineering, excellent fatigue resistance ensures long-term durability under cyclic loading. For machinery manufacturing, superior formability allows complex geometries while maintaining structural integrity. Vehicle applications benefit from enhanced crashworthiness and weight reduction capabilities.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.22 |
| Manganese (Mn) | 1.20 - 1.60 |
| Silicon (Si) | 0.15 - 0.55 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Aluminum (Al) | ≥ 0.020 |
| Chromium (Cr) | ≤ 0.30 |
| Nickel (Ni) | ≤ 0.30 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 355 |
| Tensile Strength (MPa) | 490 - 630 |
| Elongation (%) | ≥ 22 |
| Impact Energy at 20°C (J) | ≥ 27 |
| Hardness (HB) | 140 - 190 |
| Fatigue Strength (MPa) | 180 - 220 |
🔬 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) | 210 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Beams, Channels, Angles, Bars |
| Thickness Range | 3 - 80mm |
| Width Range | 1000 - 3200mm |
| Length Range | 6000 - 15000mm |
| Standards Compliance | DIN 17100, EN 10025, ASTM A572 |
| Heat Treatment Condition | Normalized or Hot Rolled |
| Surface Finish | Hot Rolled, Pickled, Shot Blasted |
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Our Advantages in Processing St 52 Steel
Advanced Controlled Rolling Technology
MetalZenith employs precision controlled rolling with optimized temperature profiles and reduction schedules to achieve superior grain structure in St 52 steel. Our advanced processing ensures consistent mechanical properties throughout the material thickness while maintaining excellent weldability and formability for structural applications.
Comprehensive Structural Testing
Our St 52 steel undergoes rigorous testing protocols including welding performance evaluation, bend testing for formability, fatigue strength analysis, and atmospheric corrosion resistance testing. This comprehensive approach ensures optimal performance in demanding structural applications with long-term durability.
Custom Fabrication Solutions
MetalZenith provides complete custom processing services including precision cutting, forming, welding preparation, and heat treatment optimization. Our technical support team works closely with structural engineers to deliver St 52 steel solutions tailored to specific project requirements and construction standards.
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