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Technical Specifications
Product Overview
Metallurgical Characteristics
S45C is a medium carbon structural steel with a predominantly ferritic-pearlitic microstructure in the normalized condition. The balanced carbon content provides optimal combination of strength and ductility, while the controlled manganese content enhances hardenability and impact toughness. The fine-grained microstructure achieved through controlled rolling ensures excellent mechanical properties and structural integrity.
Heat Treatment Process
MetalZenith employs precise heat treatment protocols including normalization at 850-900°C followed by air cooling, or quenching and tempering processes with austenitizing at 820-860°C, water quenching, and tempering at 550-650°C. Our controlled cooling rates and temperature monitoring ensure optimal microstructural development and mechanical property achievement.
Manufacturing Process
Our advanced manufacturing process incorporates electric arc furnace melting with secondary refining, continuous casting, and controlled rolling techniques. The thermomechanical processing parameters are optimized to achieve fine grain structure and enhanced mechanical properties while maintaining excellent weldability and formability characteristics essential for structural applications.
Structural Quality Testing
MetalZenith conducts comprehensive testing specific to structural applications including welding performance evaluation using standard procedures, forming capability assessment through bend testing, fatigue strength determination under cyclic loading, and atmospheric corrosion resistance testing. These specialized tests ensure reliable performance in demanding structural environments.
Application Engineering Considerations
For building frameworks and bridge construction, S45C provides excellent strength-to-weight ratio and weldability. In machinery manufacturing, the balanced mechanical properties enable reliable performance under dynamic loading. For automotive chassis applications, the material offers optimal combination of strength, formability, and fatigue resistance. The versatile nature of S45C makes it ideal for general engineering applications requiring moderate to high strength with good fabrication characteristics.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.42 - 0.48 |
| Manganese (Mn) | 0.60 - 0.90 |
| Silicon (Si) | 0.15 - 0.35 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | ≤ 0.20 |
| Nickel (Ni) | ≤ 0.20 |
| Copper (Cu) | ≤ 0.30 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 355 |
| Tensile Strength (MPa) | 570 - 720 |
| Elongation (%) | ≥ 17 |
| Impact Energy at 20°C (J) | ≥ 39 |
| Hardness (HB) | 170 - 217 |
| Fatigue Strength (MPa) | 280 - 320 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1460 - 1520 |
| Thermal Conductivity (W/m·K) | 51.9 |
| Thermal Expansion (×10??/K) | 11.5 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Bars, Rods, Tubes, Forgings |
| Thickness Range | 3 - 200mm |
| Width Range | 500 - 3000mm |
| Length Range | 3000 - 12000mm |
| Standards Compliance | JIS G4051, ASTM A29, DIN C45, GB 45# |
| Heat Treatment Condition | Normalized, Q&T, or As-Rolled |
| Surface Finish | Hot Rolled, Cold Drawn, Machined |
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Our Advantages in Processing S45C Steel
Precision Heat Treatment Processing
MetalZenith utilizes advanced controlled cooling and precise quenching-tempering processes with computerized temperature monitoring to achieve optimal microstructure and mechanical properties. Our sophisticated heat treatment ensures consistent strength and toughness throughout the material cross-section.
Comprehensive Structural Testing
Our quality assurance program includes specialized testing for structural applications: welding performance evaluation, forming capability assessment, fatigue strength testing, and atmospheric corrosion resistance analysis. This ensures reliable performance in demanding structural environments.
Custom Fabrication Services
MetalZenith provides comprehensive custom processing services including precision cutting, machining, heat treatment, and surface finishing. Our technical support team works closely with customers to optimize material specifications for specific structural applications.
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