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Technical Specifications
Product Overview
Metallurgical Characteristics
S20C exhibits a predominantly ferritic-pearlitic microstructure with fine grain size that provides excellent balance of strength, ductility, and toughness. The low carbon content ensures superior weldability and cold forming characteristics, while the controlled manganese content contributes to strength and hardenability. The microstructure promotes excellent machinability and surface finish quality essential for structural applications.
Heat Treatment Process
MetalZenith employs controlled hot rolling at 1150-1200°C followed by controlled cooling to achieve optimal mechanical properties. Normalization at 870-920°C can be applied to refine grain structure and improve uniformity. Stress relief annealing at 600-650°C is recommended for welded structures to minimize residual stresses and enhance dimensional stability.
Manufacturing Process Excellence
Our advanced manufacturing process includes continuous casting, controlled hot rolling with precise temperature monitoring, and accelerated cooling systems. MetalZenith's quality control includes real-time chemical composition monitoring, mechanical property testing, and surface quality inspection to ensure consistent structural performance.
Specialized Quality Testing
Comprehensive testing protocols include welding performance evaluation using standard welding procedures, cold bending tests to assess formability, rotating beam fatigue testing for cyclic loading applications, and salt spray testing for atmospheric corrosion resistance. These tests ensure optimal performance in structural and mechanical applications.
Application Engineering Considerations
For building structural frameworks, S20C provides excellent weldability and forming characteristics essential for complex geometries. In bridge construction, the material's fatigue resistance and atmospheric corrosion properties ensure long-term durability. For mechanical manufacturing, the consistent mechanical properties and machinability enable precision component production. In vehicle manufacturing, the steel's formability and crash energy absorption characteristics meet safety requirements. General engineering applications benefit from the material's versatility and cost-effectiveness.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.17 - 0.23 |
| Manganese (Mn) | 0.30 - 0.60 |
| Silicon (Si) | 0.15 - 0.35 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | ≤ 0.25 |
| Nickel (Ni) | ≤ 0.25 |
| Copper (Cu) | ≤ 0.30 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 245 |
| Tensile Strength (MPa) | 400 - 550 |
| Elongation (%) | ≥ 25 |
| Impact Energy at 20°C (J) | ≥ 27 |
| Hardness (HB) | 120 - 170 |
| Reduction of Area (%) | ≥ 50 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.87 |
| Melting Point (°C) | 1510 - 1540 |
| Thermal Conductivity (W/m·K) | 51.9 |
| Thermal Expansion (×10??/K) | 11.8 |
| Elastic Modulus (GPa) | 200 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Bars, Rods, Structural Sections |
| Thickness Range | 3 - 80mm |
| Width Range | 1000 - 3000mm |
| Length Range | 6000 - 12000mm |
| Standards Compliance | JIS G4051, ASTM A36, EN 10025 |
| Heat Treatment Condition | Hot Rolled, Normalized, Annealed |
| Surface Finish | Black, Pickled, Shot Blasted |
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Our Advantages in Processing S20C Steel
Controlled Hot Rolling Technology
MetalZenith utilizes advanced controlled hot rolling processes with precise temperature monitoring and cooling rate control to achieve optimal grain structure and mechanical properties. Our state-of-the-art rolling technology ensures consistent thickness tolerance and superior surface quality throughout the material.
Comprehensive Structural Testing
Our quality assurance program includes specialized testing for structural applications: welding performance evaluation, cold forming capability assessment, fatigue strength testing, and atmospheric corrosion resistance analysis. These tests ensure optimal performance in building construction and mechanical engineering applications.
Custom Fabrication Services
MetalZenith provides comprehensive custom processing services including precision cutting, forming, welding preparation, and heat treatment modifications. Our technical support team works closely with customers to optimize S20C steel properties for specific structural and mechanical applications.
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