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Technical Specifications
Product Overview
Metallurgical Characteristics
T45 is a low-alloy high-strength structural steel with a tempered martensitic microstructure that provides exceptional strength and toughness. The controlled addition of chromium, molybdenum, and nickel enhances hardenability and provides superior mechanical properties compared to conventional carbon steels. The fine-grained structure achieved through controlled processing ensures excellent impact resistance and fatigue performance.
Heat Treatment Process
MetalZenith employs precise quenching and tempering processes with austenitizing at 850-900°C followed by controlled cooling and tempering at 580-650°C. This heat treatment cycle optimizes the balance between strength and toughness while ensuring dimensional stability and stress relief for structural applications.
Manufacturing Excellence
Our advanced manufacturing process includes electric arc furnace melting, ladle refining, and continuous casting followed by controlled rolling. Real-time monitoring of temperature and deformation parameters ensures consistent mechanical properties and microstructural uniformity throughout the material cross-section.
Structural Performance Testing
T45 steel undergoes comprehensive testing including weldability assessments using standard procedures, forming performance evaluation through bend tests, fatigue strength testing under cyclic loading conditions, and atmospheric corrosion resistance evaluation. These specialized tests ensure optimal performance in demanding structural environments where long-term reliability is critical.
Application Engineering
For building construction applications, T45 provides excellent strength-to-weight ratios enabling lighter structural designs. In bridge engineering, the superior fatigue resistance ensures long service life under dynamic loading. For machinery manufacturing, the combination of high strength and good machinability facilitates efficient fabrication. In vehicle manufacturing, the excellent forming characteristics enable complex component geometries while maintaining structural integrity.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.20 - 0.25 |
| Manganese (Mn) | 1.20 - 1.60 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 0.80 - 1.10 |
| Molybdenum (Mo) | 0.15 - 0.25 |
| Nickel (Ni) | 0.30 - 0.70 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 450 |
| Tensile Strength (MPa) | 630 - 780 |
| Elongation (%) | ≥ 18 |
| Impact Energy at 20°C (J) | ≥ 35 |
| Hardness (HB) | 180 - 230 |
| Fatigue Strength (MPa) | 280 - 320 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1480 - 1520 |
| Thermal Conductivity (W/m·K) | 42.5 |
| Thermal Expansion (×10??/K) | 11.8 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Beams, Channels, Angles, Bars, Forgings |
| Thickness Range | 8 - 150mm |
| Width Range | 1200 - 3500mm |
| Length Range | 6000 - 15000mm |
| Standards Compliance | ASTM A572, EN 10025-6, JIS G3106 |
| Heat Treatment Condition | Normalized or Quenched & Tempered |
| Surface Finish | Hot Rolled, Pickled, Shot Blasted |
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Our Advantages in Processing T45 Steel
Advanced Thermomechanical Processing
MetalZenith utilizes controlled rolling with precise temperature monitoring and optimized normalization cycles to achieve superior grain structure and enhanced mechanical properties. Our advanced processing ensures consistent strength and toughness throughout the material cross-section, critical for structural applications.
Comprehensive Structural Testing
Our T45 steel undergoes extensive testing including weldability assessments, forming performance evaluation, fatigue strength analysis, and atmospheric corrosion resistance testing. This comprehensive quality assurance ensures optimal performance in demanding structural environments.
Custom Fabrication Services
MetalZenith provides complete custom processing services including precision cutting, forming, welding preparation, and heat treatment modifications. Our technical support team works closely with structural engineers to optimize material specifications for specific construction and engineering requirements.
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