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Technical Specifications
Product Overview
Metallurgical Characteristics
S350GD features a fine-grained ferritic microstructure with controlled precipitation strengthening through microalloying elements. The steel substrate exhibits excellent formability due to optimized carbon content and controlled rolling practices, while the hot-dip galvanized coating provides a metallurgically bonded zinc layer with superior adhesion and uniform thickness distribution.
Heat Treatment & Processing
MetalZenith employs controlled cooling after hot rolling followed by continuous hot-dip galvanizing at 460°C with precise zinc bath chemistry control. The galvanizing process includes surface preparation, flux treatment, and controlled cooling to achieve optimal coating microstructure and mechanical properties retention.
Manufacturing Process Excellence
Our advanced production line features real-time coating thickness monitoring, surface quality inspection, and mechanical property verification. MetalZenith's integrated quality management system ensures consistent coating adhesion, surface finish, and dimensional accuracy throughout the production process.
Structural Performance Testing
Comprehensive testing protocols include welding performance evaluation using standard procedures, forming capability assessment through bend and deep-draw tests, fatigue strength verification under cyclic loading, and accelerated atmospheric corrosion testing to validate long-term durability in structural applications.
Application Engineering Considerations
For building structures, S350GD provides excellent strength-to-weight ratio and corrosion resistance for exposed frameworks. In bridge engineering, the material offers superior fatigue resistance and weathering performance. For machinery manufacturing, the steel delivers reliable weldability and forming characteristics. In automotive applications, it provides crash performance and corrosion protection, while general engineering benefits from its versatile processing capabilities and long-term durability.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.12 |
| Manganese (Mn) | ≤ 1.60 |
| Silicon (Si) | ≤ 0.50 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
| Aluminum (Al) | ≥ 0.015 |
| Niobium (Nb) | ≤ 0.09 |
| Titanium (Ti) | ≤ 0.15 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 350 |
| Tensile Strength (MPa) | 420 - 550 |
| Elongation (%) | ≥ 23 |
| Impact Energy at 20°C (J) | ≥ 27 |
| Hardness (HV) | 120 - 180 |
| Bend Test (180°) | No Cracking |
🔬 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) | 12.0 |
| Elastic Modulus (GPa) | 210 |
| Zinc Coating Weight (g/m2) | 275 - 350 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Sheets, Coils, Cut-to-Length Plates, Strips |
| Thickness Range | 0.75 - 3.0mm |
| Width Range | 600 - 1500mm |
| Length Range | 1000 - 6000mm |
| Standards Compliance | EN 10346, ASTM A653, JIS G3302 |
| Surface Treatment | Hot-Dip Galvanized (HDG) |
| Edge Condition | Mill Edge, Slit Edge, Trimmed Edge |
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Our Advantages in Processing S350GD
Advanced Hot-Dip Galvanizing Process
MetalZenith employs continuous hot-dip galvanizing with real-time coating thickness monitoring and controlled cooling to achieve uniform zinc coating distribution. Our advanced processing ensures optimal adhesion between the steel substrate and zinc coating, providing superior corrosion resistance and extended service life.
Comprehensive Structural Testing
MetalZenith conducts extensive testing including welding performance evaluation, forming capability assessment, fatigue strength testing, and atmospheric corrosion resistance analysis. Our quality assurance ensures S350GD meets the demanding requirements of structural applications with verified long-term durability.
Custom Fabrication & Engineering Support
MetalZenith provides comprehensive custom processing services including precision cutting, forming, welding preparation, and technical consultation. Our engineering team offers application-specific guidance for structural design optimization and fabrication best practices to maximize performance in demanding environments.
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