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Technical Specifications
Product Overview
Metallurgical Characteristics
HRPO steel features a fine-grained ferritic-pearlitic microstructure achieved through controlled hot rolling processes. The optimized chemical composition and thermomechanical processing result in excellent strength-to-weight ratio and superior formability. The pickling process removes surface oxides, while the protective oil coating prevents atmospheric corrosion during storage and handling.
Heat Treatment Process
MetalZenith employs controlled hot rolling at temperatures between 1050-1200°C followed by controlled cooling to achieve optimal mechanical properties. The subsequent pickling process uses hydrochloric acid solutions to remove scale, followed by application of protective oil coating to maintain surface integrity and prevent oxidation.
Manufacturing Process Excellence
Our advanced manufacturing process includes continuous casting, precision hot rolling with computerized thickness control, inline cooling systems, and automated pickling lines. Real-time monitoring ensures consistent mechanical properties and surface quality throughout production, meeting the demanding requirements of structural applications.
Specialized Quality Testing
MetalZenith conducts comprehensive testing including weldability assessments per AWS standards, formability testing using Erichsen and bend tests, fatigue strength evaluation under cyclic loading, and accelerated atmospheric corrosion testing. These specialized tests ensure optimal performance in structural applications requiring long-term durability.
Structural Application Engineering
For building construction, our HRPO steel provides excellent weldability and formability for complex structural shapes. In bridge engineering, the superior fatigue resistance ensures long-term performance under dynamic loading. For machinery manufacturing, the consistent mechanical properties enable precise fabrication of equipment frames. In automotive applications, the excellent surface finish and formability support complex chassis designs, while general engineering benefits from the versatile processing characteristics and reliable performance.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.15 - 0.25 |
| Manganese (Mn) | 0.60 - 1.35 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.035 |
| Aluminum (Al) | 0.020 - 0.055 |
| Copper (Cu) | ≤ 0.20 |
| Chromium (Cr) | ≤ 0.15 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | 345 - 450 |
| Tensile Strength (MPa) | 450 - 590 |
| Elongation (%) | ≥ 22 |
| Impact Energy at 0°C (J) | ≥ 35 |
| Hardness (HB) | 140 - 180 |
| Bend Test (180°) | No Cracking |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.87 |
| 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 | Sheets, Plates, Coils, Cut-to-Length |
| Thickness Range | 1.5 - 25mm |
| Width Range | 600 - 2100mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A1011, EN 10025, JIS G3141 |
| Surface Condition | Pickled and Oiled |
| Edge Condition | Mill Edge, Slit Edge, Trimmed |
| Coil Weight | 5 - 35 tons |
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Our Advantages in Processing HRPO Steel
Advanced Hot Rolling and Surface Treatment
MetalZenith utilizes precision hot rolling technology with controlled temperature profiles and advanced pickling processes to achieve superior surface quality and dimensional accuracy. Our protective oiling system ensures optimal corrosion resistance and enhanced formability for structural applications.
Comprehensive Structural Performance Testing
Our HRPO steel undergoes extensive testing including weldability assessments, bend testing for formability, fatigue strength evaluation, and atmospheric corrosion resistance testing. This ensures optimal performance in structural applications requiring long-term durability and reliability.
Custom Structural Solutions & Technical Support
MetalZenith provides tailored HRPO steel solutions with custom dimensions, mechanical properties, and surface treatments. Our engineering team offers comprehensive technical support for structural design optimization and fabrication process recommendations.
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