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Technical Specifications
Product Overview
Metallurgical Characteristics
S350 is a high-strength low-alloy (HSLA) structural steel with a fine-grained ferritic-pearlitic microstructure. The controlled addition of microalloying elements such as niobium and vanadium promotes grain refinement and precipitation strengthening, resulting in excellent strength-to-weight ratio and superior weldability essential for structural applications.
Heat Treatment Process
MetalZenith employs controlled rolling at temperatures between 850-950°C followed by accelerated cooling to achieve optimal mechanical properties. Our thermomechanical controlled processing (TMCP) ensures fine grain structure and enhanced toughness while maintaining excellent formability for complex structural fabrication.
Manufacturing Excellence
Our state-of-the-art production facility utilizes advanced hot-rolling mills with precise temperature control and cooling systems. MetalZenith's integrated quality management system ensures consistent chemical composition and mechanical properties throughout each production batch, meeting the stringent requirements of structural engineering applications.
Specialized Quality Testing
S350 steel undergoes comprehensive testing protocols including weldability assessments per AWS D1.1, forming performance evaluation through bend testing, fatigue strength testing under cyclic loading conditions, and atmospheric corrosion resistance testing. Our advanced testing laboratory ensures compliance with structural steel requirements for long-term durability and performance.
Application Engineering Considerations
For building construction applications, S350 provides excellent strength-to-weight ratio enabling lighter structural designs. In bridge engineering, the superior fatigue resistance ensures long-term performance under dynamic loading. For machinery manufacturing, the excellent weldability and formability allow complex fabrication. In vehicle construction, the high strength enables weight reduction while maintaining structural integrity. General engineering applications benefit from the versatile processing capabilities and reliable mechanical properties.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.23 |
| Manganese (Mn) | 1.35 - 1.65 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Copper (Cu) | ≤ 0.35 |
| Niobium (Nb) | 0.005 - 0.050 |
| Vanadium (V) | 0.01 - 0.15 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 350 |
| Tensile Strength (MPa) | 450 - 620 |
| Elongation (%) | ≥ 21 |
| Impact Energy at 20°C (J) | ≥ 27 |
| Hardness (HB) | 140 - 190 |
| Fatigue Strength (MPa) | ≥ 175 |
🔬 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) | 200 |
| Poisson's Ratio | 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 | ASTM A572 Grade 50, EN 10025-2 S355 |
| Heat Treatment Condition | Hot Rolled, Normalized, or TMCP |
| Surface Finish | Mill Scale, Pickled, Shot Blasted |
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Our Advantages in Processing S350 Steel
Advanced Thermomechanical Processing
MetalZenith utilizes controlled rolling and precise thermomechanical processing with real-time temperature monitoring to achieve optimal grain structure and enhanced mechanical properties. Our advanced hot-rolling techniques ensure consistent strength and excellent formability throughout the material cross-section, essential for structural applications.
Comprehensive Structural Testing
Our S350 steel undergoes extensive testing including weldability assessments, forming performance evaluation, fatigue strength testing, and atmospheric corrosion resistance analysis. MetalZenith's quality assurance program ensures superior performance in demanding structural environments with comprehensive Charpy impact testing and bend testing protocols.
Custom Fabrication Solutions
MetalZenith provides comprehensive custom processing services including precision cutting, forming, and heat treatment optimization. Our technical support team works closely with structural engineers to deliver tailored solutions for complex construction projects, ensuring optimal material performance and cost-effectiveness.
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