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Technical Specifications
Product Overview
Metallurgical Characteristics
Hard Steel features a tempered martensitic microstructure achieved through controlled quenching and tempering processes. The optimized carbon content combined with chromium, molybdenum, and nickel additions provides exceptional strength while maintaining adequate ductility for structural applications. The fine-grained microstructure ensures superior fatigue resistance and impact toughness.
Heat Treatment Process
MetalZenith employs controlled austenitizing at 850-900°C followed by rapid quenching in oil or polymer solutions, then tempering at 550-650°C to achieve optimal strength-toughness balance. The precise temperature control and cooling rates ensure uniform hardness distribution and minimize residual stresses.
Manufacturing Process
Our advanced manufacturing process includes electric arc furnace melting, ladle refining for precise chemistry control, continuous casting, and controlled rolling. Secondary operations include precision cutting, forming, and surface preparation to meet specific structural requirements.
Structural Quality Testing
Comprehensive testing protocols include welding procedure qualification testing per AWS standards, bend testing for formability assessment, rotating beam fatigue testing, and salt spray corrosion testing. All testing ensures compliance with structural engineering requirements and building codes.
Application Engineering
For building construction, Hard Steel provides excellent strength-to-weight ratios for high-rise frameworks. In bridge engineering, superior fatigue resistance handles dynamic loading. For machinery manufacturing, high hardness ensures durability under heavy loads. Vehicle applications benefit from crash energy absorption capabilities, while general engineering applications utilize the versatile strength and weldability characteristics.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.40 - 0.60 |
| Manganese (Mn) | 0.60 - 0.90 |
| Silicon (Si) | 0.15 - 0.35 |
| 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) | ≥ 550 |
| Tensile Strength (MPa) | 750 - 950 |
| Elongation (%) | ≥ 16 |
| Impact Energy at 20°C (J) | ≥ 35 |
| Hardness (HRC) | 22 - 28 |
| Fatigue Strength (MPa) | ≥ 300 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1480 - 1520 |
| Thermal Conductivity (W/m·K) | 42.7 |
| 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, Tubes |
| Thickness Range | 8 - 150mm |
| Width Range | 1200 - 3500mm |
| Length Range | 6000 - 15000mm |
| Standards Compliance | ASTM A572, AISC 360, AWS D1.1 |
| Heat Treatment Condition | Quenched and Tempered |
| Surface Finish | Hot Rolled, Pickled, Shot Blasted |
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Our Advantages in Processing Hard Steel
Advanced Quenching-Tempering Process
MetalZenith employs precision-controlled quenching and tempering processes with real-time temperature monitoring to achieve optimal hardness and strength distribution. Our advanced heat treatment ensures consistent mechanical properties throughout the material cross-section while maintaining excellent toughness.
Comprehensive Structural Testing
Our Hard Steel undergoes rigorous testing protocols including welding performance evaluation, forming capability assessment, fatigue strength testing under cyclic loading, and atmospheric corrosion resistance testing to ensure superior performance in structural applications.
Custom Structural Solutions
MetalZenith provides comprehensive custom processing services including precision cutting, forming, welding preparation, and surface treatment. Our technical support team works closely with structural engineers to optimize material specifications for specific construction and engineering requirements.
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