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We have 20 years of industry experience, have partnered with over 1,000 brands, and support any customization needs.
Technical Specifications
Product Overview
Metallurgical Characteristics
Structural steel exhibits a predominantly ferritic-pearlitic microstructure with fine grain size achieved through controlled rolling practices. The balanced carbon content provides optimal strength-to-ductility ratio, while manganese additions enhance hardenability and strength. The microstructure ensures excellent weldability and forming characteristics essential for structural applications.
Heat Treatment Process
MetalZenith employs controlled hot rolling at temperatures between 1100-1200°C followed by controlled cooling to achieve desired mechanical properties. Optional normalizing at 870-920°C may be applied for enhanced grain refinement and stress relief, particularly for heavy sections requiring superior toughness.
Manufacturing Process
Our structural steel production utilizes electric arc furnace steelmaking with secondary refining for precise chemistry control. Advanced continuous casting and hot rolling mills ensure consistent dimensional accuracy and surface quality. Real-time process monitoring guarantees uniform mechanical properties throughout each production lot.
Quality Testing Protocols
Comprehensive testing includes welding performance evaluation per AWS standards, forming capability assessment through bend testing, fatigue strength verification under cyclic loading, and atmospheric corrosion resistance testing. Each batch undergoes tensile testing, impact testing, and hardness verification to ensure compliance with structural requirements.
Application Engineering
For building construction, our structural steel provides excellent load-bearing capacity and seismic resistance. Bridge applications benefit from superior fatigue performance and weather resistance. Machinery manufacturing utilizes the material's machinability and weldability, while automotive applications leverage the strength-to-weight ratio for chassis components. General engineering projects benefit from the versatile forming and joining characteristics.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.25 - 0.29 |
| Manganese (Mn) | 0.80 - 1.20 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.050 |
| Copper (Cu) | 0.20 - 0.35 |
| Iron (Fe) | Balance |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 250 |
| Tensile Strength (MPa) | 400 - 550 |
| Elongation (%) | ≥ 20 |
| Impact Energy at 20°C (J) | ≥ 27 |
| Hardness (HB) | 120 - 160 |
| Fatigue Strength (MPa) | 160 - 200 |
🔬 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) | 11.7 |
| Elastic Modulus (GPa) | 200 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Beams, Channels, Angles, Bars, Tubes |
| Thickness Range | 3 - 200mm |
| Width Range | 1000 - 3000mm |
| Length Range | 6000 - 12000mm |
| Standards Compliance | ASTM A36, AISC 360, AWS D1.1 |
| Surface Condition | Hot Rolled, Pickled, Shot Blasted |
| Delivery Condition | As-Rolled or Normalized |
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Our Advantages in Processing Structural Steel
Controlled Hot Rolling Technology
MetalZenith utilizes advanced controlled hot rolling with precise temperature monitoring and cooling rates to achieve optimal grain structure and mechanical properties. Our state-of-the-art rolling mills ensure consistent thickness tolerance and superior surface quality throughout the material cross-section.
Comprehensive Performance Testing
Our structural steel undergoes extensive testing including welding performance evaluation, forming capability assessment, fatigue strength analysis, and atmospheric corrosion resistance testing. This ensures optimal performance in construction and engineering applications with verified long-term durability.
Custom Fabrication Services
MetalZenith provides comprehensive custom processing including cutting, drilling, welding preparation, and surface treatment. Our technical support team offers engineering consultation for structural design optimization and material selection guidance for specific project requirements.
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