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Technical Specifications
Product Overview
Metallurgical Characteristics
H1 structural steel features a refined ferritic-pearlitic microstructure achieved through controlled rolling and optimized chemical composition. The balanced addition of chromium, nickel, and molybdenum enhances hardenability and provides superior strength-to-weight ratio while maintaining excellent weldability and formability 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 uniform property distribution, critical for structural integrity in building and bridge applications.
Manufacturing Process
Our H1 steel production utilizes electric arc furnace melting with secondary refining processes including ladle metallurgy and vacuum degassing. Continuous casting followed by controlled rolling ensures consistent quality and mechanical properties. Advanced process control systems monitor temperature, deformation, and cooling rates throughout production.
Structural Quality Testing
Comprehensive testing protocols include welding performance evaluation using standard procedures, forming capability assessment through bend tests, fatigue strength testing under cyclic loading conditions, and atmospheric corrosion resistance evaluation. Each batch undergoes ultrasonic testing, impact testing at various temperatures, and complete chemical analysis to ensure structural reliability.
Application Engineering Considerations
For building construction, H1 steel provides excellent seismic resistance and load-bearing capacity. In bridge engineering, its superior fatigue resistance and weldability ensure long-term structural integrity. For machinery manufacturing, the combination of strength and machinability enables complex component fabrication. Vehicle manufacturing benefits from its formability and crash resistance properties, while general engineering applications leverage its versatility and reliable performance characteristics.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.18 - 0.25 |
| Manganese (Mn) | 1.20 - 1.65 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 0.30 - 0.60 |
| Nickel (Ni) | 0.25 - 0.50 |
| Molybdenum (Mo) | 0.15 - 0.25 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 345 |
| Tensile Strength (MPa) | 450 - 590 |
| Elongation (%) | ≥ 21 |
| Impact Energy at 0°C (J) | ≥ 27 |
| Hardness (HB) | 140 - 180 |
| 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) | 11.8 |
| 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 | 8 - 150mm |
| Width Range | 1200 - 3500mm |
| Length Range | 6000 - 15000mm |
| Standards Compliance | ASTM A572, EN 10025, JIS G3106 |
| Heat Treatment Condition | Hot Rolled, Normalized, or TMCP |
| Surface Finish | Mill Scale, Shot Blasted, Pickled |
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Our Advantages in Processing H1 Steel
Advanced Controlled Rolling Technology
MetalZenith utilizes state-of-the-art controlled rolling processes with precise temperature control and deformation scheduling to achieve optimal grain refinement in H1 steel. Our advanced thermomechanical processing ensures uniform mechanical properties and enhanced structural performance throughout the material thickness.
Comprehensive Structural Testing
Our H1 steel undergoes extensive testing protocols including welding performance evaluation, forming capability assessment, fatigue strength testing, and atmospheric corrosion resistance analysis. This comprehensive testing ensures superior performance in demanding structural applications with long-term reliability.
Custom Fabrication Services
MetalZenith provides complete custom processing solutions for H1 steel including precision cutting, forming, welding preparation, and surface treatment. Our technical support team works closely with structural engineers to optimize material specifications for specific construction and engineering requirements.
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