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Technical Specifications
Product Overview
Metallurgical Characteristics
Weathering steel features a carefully balanced microstructure with fine-grained ferrite-pearlite matrix enhanced by strategic alloying elements. The controlled addition of copper, chromium, nickel, and phosphorus creates a dense, adherent oxide layer that forms naturally upon atmospheric exposure, providing long-term corrosion protection while maintaining structural integrity.
Heat Treatment Process
MetalZenith employs controlled hot rolling at 1050-1150°C followed by controlled cooling or normalization at 880-920°C. Our advanced thermomechanical controlled processing (TMCP) optimizes grain refinement and ensures uniform distribution of alloying elements for consistent atmospheric corrosion resistance and mechanical properties.
Manufacturing Excellence
Our state-of-the-art production facilities utilize electric arc furnace melting with precise ladle metallurgy to achieve optimal chemical composition control. Advanced continuous casting and hot rolling processes ensure uniform microstructure and superior surface quality, critical for weathering steel performance in structural applications.
Specialized Quality Testing
MetalZenith conducts comprehensive testing including accelerated atmospheric corrosion testing per ASTM G101, welding performance evaluation according to AWS D1.1, fatigue strength testing per ASTM D7791, and forming capability assessment. Our rigorous quality control ensures superior performance in demanding structural environments.
Structural Application Engineering
For building construction and bridge engineering, our weathering steel provides exceptional long-term durability with reduced maintenance requirements. In mechanical manufacturing and vehicle construction applications, the material offers superior strength-to-weight ratio and excellent fabrication characteristics. For general engineering projects, the self-protecting nature eliminates painting costs while ensuring reliable structural performance over extended service life.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.19 |
| Manganese (Mn) | 0.75 - 1.35 |
| Silicon (Si) | 0.30 - 0.65 |
| Phosphorus (P) | 0.04 - 0.15 |
| Sulfur (S) | ≤ 0.05 |
| Copper (Cu) | 0.25 - 0.40 |
| Chromium (Cr) | 0.40 - 0.65 |
| Nickel (Ni) | 0.25 - 0.40 |
| Vanadium (V) | 0.02 - 0.10 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 345 |
| Tensile Strength (MPa) | 485 - 620 |
| Elongation (%) | ≥ 18 |
| Impact Energy at 0°C (J) | ≥ 27 |
| Hardness (HB) | 140 - 190 |
| Fatigue Strength (MPa) | ≥ 160 |
🔬 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) | 12.0 |
| Elastic Modulus (GPa) | 200 |
| Electrical Resistivity (μΩ·m) | 0.17 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Beams, Angles, Channels, Bars |
| Thickness Range | 4 - 200mm |
| Width Range | 1000 - 3500mm |
| Length Range | 6000 - 15000mm |
| Standards Compliance | ASTM A588, ASTM A709, EN 10155, JIS G3114 |
| Heat Treatment Condition | Hot Rolled, Normalized, or TMCP |
| Surface Condition | Mill Scale, Shot Blasted, or Pickled |
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Our Advantages in Processing Weathering Steel
Advanced Atmospheric Corrosion Technology
MetalZenith utilizes precision-controlled alloying with copper, chromium, nickel, and phosphorus to create an optimal protective patina formation. Our advanced metallurgical processes ensure uniform corrosion resistance and enhanced structural integrity throughout the material's service life.
Comprehensive Structural Performance Testing
Our weathering steel undergoes extensive testing including accelerated atmospheric corrosion testing, welding performance evaluation, fatigue strength analysis, and forming capability assessment. MetalZenith ensures superior performance in demanding structural applications with rigorous quality validation.
Custom Structural Solutions & Engineering Support
MetalZenith provides comprehensive technical support including custom sizing, specialized heat treatment, and application-specific processing. Our engineering team offers expert consultation for optimal weathering steel selection and implementation in diverse structural projects.
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