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Technical Specifications
Product Overview
Metallurgical Characteristics
EN9 is a high carbon structural steel with a predominantly martensitic microstructure when quenched and tempered. The controlled carbon content of 0.50-0.60% provides excellent hardenability and strength characteristics. The fine-grained structure achieved through controlled processing ensures optimal combination of strength, toughness, and fatigue resistance essential for structural applications.
Heat Treatment Process
MetalZenith employs precision heat treatment processes including austenitizing at 820-860°C followed by controlled quenching in oil or water, and tempering at 550-650°C depending on required hardness levels. Our computer-controlled furnaces ensure uniform heating and precise temperature control for consistent mechanical properties throughout the material cross-section.
Manufacturing Process Excellence
Our EN9 steel production utilizes electric arc furnace melting with secondary refining processes including ladle furnace treatment and vacuum degassing. The controlled rolling process with optimized reduction ratios ensures excellent surface quality and dimensional accuracy. Advanced continuous casting technology provides superior internal soundness and homogeneous chemical composition.
Specialized Quality Testing
MetalZenith conducts comprehensive testing specific to structural applications including welding performance evaluation using standard welding procedures, forming capability assessment through bend testing, fatigue strength analysis using rotating beam testing, and atmospheric corrosion resistance evaluation. Our testing protocols ensure optimal performance in demanding structural environments.
Structural Application Engineering
For building construction and bridge engineering, EN9 steel provides excellent load-bearing capacity and seismic resistance. In machinery manufacturing, its high strength-to-weight ratio enables compact design solutions. For vehicle manufacturing, the material offers superior crash resistance and structural integrity. Our technical team provides application-specific guidance for optimal joint design, welding procedures, and fabrication techniques to maximize performance in each application domain.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.50 - 0.60 |
| Manganese (Mn) | 0.60 - 0.90 |
| Silicon (Si) | 0.10 - 0.40 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Chromium (Cr) | 0.10 - 0.40 |
| Nickel (Ni) | ≤ 0.30 |
| Molybdenum (Mo) | ≤ 0.10 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 580 |
| Tensile Strength (MPa) | 850 - 1000 |
| Elongation (%) | ≥ 12 |
| Impact Energy at 20°C (J) | ≥ 35 |
| Hardness (HB) | 250 - 300 |
| Fatigue Strength (MPa) | 400 - 450 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1460 - 1520 |
| Thermal Conductivity (W/m·K) | 42.6 |
| 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, Forgings, Structural Sections |
| Thickness Range | 3 - 200mm |
| Width Range | 500 - 3000mm |
| Length Range | 3000 - 12000mm |
| Standards Compliance | BS EN 10083, ASTM A29, ISO 683, JIS G4051 |
| Heat Treatment Condition | Quenched and Tempered, Normalized, Annealed |
| Surface Finish | Hot Rolled, Cold Drawn, Machined, Polished |
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Our Advantages in Processing EN9 Steel
Advanced Heat Treatment Processing
MetalZenith utilizes precision-controlled quenching and tempering processes with computerized temperature monitoring to achieve optimal hardness and strength characteristics. Our advanced heat treatment facilities ensure uniform microstructure and enhanced fatigue resistance throughout the material cross-section.
Comprehensive Structural Testing
Our EN9 steel undergoes extensive testing including welding performance evaluation, forming capability assessment, fatigue strength analysis, and atmospheric corrosion resistance testing. This comprehensive testing ensures optimal performance in demanding structural applications.
Custom Engineering Solutions
MetalZenith provides tailored processing services including precision cutting, heat treatment to specific requirements, and custom dimensional specifications. Our technical support team offers expert guidance for optimal material selection and application engineering.
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