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Technical Specifications
Product Overview
Metallurgical Characteristics
S450 is a high-strength low-alloy (HSLA) structural steel with a refined ferritic-bainitic microstructure. The controlled addition of microalloying elements including niobium and vanadium promotes grain refinement and precipitation strengthening, resulting in an optimal combination of strength, toughness, and weldability essential for structural applications.
Heat Treatment Process
MetalZenith employs thermomechanical controlled processing (TMCP) with controlled rolling temperatures between 850-950°C followed by accelerated cooling. Alternative heat treatment includes quenching from 900-950°C followed by tempering at 580-650°C to achieve optimal strength-toughness balance for structural applications.
Manufacturing Process Excellence
MetalZenith's advanced manufacturing process incorporates continuous casting, controlled rolling with precise temperature monitoring, and optimized cooling strategies. Our state-of-the-art facilities ensure consistent chemical composition and mechanical properties throughout the material cross-section, critical for structural integrity.
Specialized Quality Testing
Comprehensive testing protocols include welding performance evaluation using standardized procedures, forming capability assessment through bend testing, fatigue strength determination under cyclic loading conditions, and atmospheric corrosion resistance testing in simulated environmental conditions. These specialized tests ensure S450 steel meets the demanding requirements of structural applications.
Application-Specific Technical Considerations
For building construction, S450 provides excellent strength-to-weight ratio enabling lighter structural designs. In bridge engineering, superior fatigue resistance ensures long-term durability under dynamic loading. For machinery manufacturing, exceptional weldability facilitates complex fabrication processes. In vehicle construction, high strength enables weight reduction while maintaining safety standards. For general engineering applications, consistent mechanical properties ensure reliable performance across diverse operating conditions.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.20 |
| Manganese (Mn) | 1.20 - 1.70 |
| Silicon (Si) | 0.15 - 0.60 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.025 |
| Aluminum (Al) | ≥ 0.015 |
| Niobium (Nb) | 0.015 - 0.060 |
| Vanadium (V) | 0.02 - 0.12 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 450 |
| Tensile Strength (MPa) | 550 - 720 |
| Elongation (%) | ≥ 17 |
| Impact Energy at -20°C (J) | ≥ 27 |
| Hardness (HB) | 160 - 220 |
| Fatigue Strength (MPa) | ≥ 225 |
🔬 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) | 210 |
| Poisson's Ratio | 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Beams, Channels, Angles, Bars, Tubes |
| Thickness Range | 3 - 80mm |
| Width Range | 1000 - 3200mm |
| Length Range | 6000 - 15000mm |
| Standards Compliance | EN 10025-4, ASTM A572 Grade 65, JIS G3106 |
| Heat Treatment Condition | TMCP, Quenched & Tempered, Normalized |
| Surface Finish | Hot Rolled, Shot Blasted, Pickled & Oiled |
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Our Advantages in Processing S450 Steel
Advanced Thermomechanical Processing
MetalZenith utilizes state-of-the-art TMCP technology with controlled rolling and precise cooling rates to achieve optimal microstructure and enhanced mechanical properties. Our advanced processing ensures consistent strength and toughness throughout the material cross-section, delivering superior structural performance.
Comprehensive Structural Testing
MetalZenith conducts extensive testing protocols including welding performance evaluation, forming capability assessment, fatigue strength testing, and atmospheric corrosion resistance analysis. Our rigorous quality assurance ensures S450 steel meets the demanding requirements of structural applications.
Custom Engineering Solutions
MetalZenith provides comprehensive custom processing services including precision cutting, forming, welding preparation, and heat treatment optimization. Our technical support team works closely with structural engineers to deliver tailored solutions for specific construction and engineering requirements.
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