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Technical Specifications
Product Overview
Metallurgical Characteristics
X80 steel features a refined microstructure consisting primarily of fine-grained ferrite with controlled amounts of acicular ferrite and bainite. The strategic addition of microalloying elements including niobium, vanadium, and titanium promotes precipitation strengthening and grain refinement through controlled nucleation and growth mechanisms. This optimized microstructure delivers exceptional strength-toughness balance essential for structural applications.
Heat Treatment Process
MetalZenith employs advanced thermomechanical controlled processing (TMCP) with controlled rolling temperatures between 850-950°C followed by accelerated cooling at rates of 5-15°C/s. This precise thermal processing schedule ensures optimal austenite conditioning, controlled transformation kinetics, and fine microstructural development critical for achieving superior mechanical properties.
Manufacturing Process Excellence
Our state-of-the-art production facility utilizes computer-controlled rolling mills with real-time temperature monitoring and feedback systems. The controlled deformation schedule combined with precise cooling strategies ensures consistent mechanical properties throughout the material cross-section, meeting the stringent requirements for structural and pipeline applications.
Specialized Quality Testing
MetalZenith conducts comprehensive testing protocols specifically designed for structural applications. Welding performance evaluation includes preheating requirements assessment, heat-affected zone toughness testing, and weld metal compatibility verification. Forming capability testing encompasses bend testing, hole expansion testing, and springback evaluation. Fatigue strength testing under variable amplitude loading simulates real-world structural service conditions, while atmospheric corrosion resistance testing ensures long-term durability in outdoor applications.
Structural Application Engineering
For building construction and bridge engineering applications, X80 steel provides exceptional load-bearing capacity with reduced structural weight, enabling more efficient designs and cost-effective construction. In mechanical manufacturing, the superior strength and formability facilitate complex component fabrication while maintaining dimensional stability. Vehicle manufacturing benefits from the excellent crash energy absorption characteristics and fatigue resistance. General engineering applications leverage the versatile combination of strength, weldability, and machinability for diverse structural components and assemblies.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.22 |
| Manganese (Mn) | 1.20 - 1.80 |
| Silicon (Si) | 0.15 - 0.45 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.015 |
| Niobium (Nb) | 0.05 - 0.10 |
| Vanadium (V) | 0.02 - 0.06 |
| Titanium (Ti) | 0.006 - 0.030 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 555 |
| Tensile Strength (MPa) | 625 - 825 |
| Elongation (%) | ≥ 18 |
| Impact Energy at -20°C (J) | ≥ 40 |
| Hardness (HB) | 180 - 250 |
| Yield-to-Tensile Ratio | ≤ 0.85 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1510 - 1540 |
| Thermal Conductivity (W/m·K) | 48.2 |
| Thermal Expansion (×10??/K) | 11.8 |
| Elastic Modulus (GPa) | 207 |
| Poisson's Ratio | 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Pipes, Coils, Structural Sections |
| Thickness Range | 3 - 80mm |
| Width Range | 1200 - 4200mm |
| Length Range | 6000 - 24000mm |
| Standards Compliance | API 5L X80, ASTM A1018, EN 10208-2 |
| Heat Treatment Condition | TMCP (As-Rolled) |
| Surface Finish | Hot Rolled, Pickled, Shot Blasted |
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Our Advantages in Processing X80 Steel
Advanced Thermomechanical Processing
MetalZenith utilizes state-of-the-art TMCP technology with precise temperature control and accelerated cooling to achieve optimal microstructural refinement. Our controlled rolling process followed by strategic cooling rates produces fine-grained ferrite-bainite microstructure, delivering exceptional strength and toughness combination essential for structural applications.
Comprehensive Structural Testing
Our X80 steel undergoes extensive testing protocols including advanced welding performance evaluation, cold forming capability assessment, fatigue strength testing under cyclic loading, and atmospheric corrosion resistance testing. MetalZenith ensures superior performance in structural applications through rigorous quality validation of all critical mechanical and environmental properties.
Custom Structural Solutions
MetalZenith provides comprehensive custom processing services including precision cutting, forming, heat treatment optimization, and specialized surface treatments. Our technical support team works closely with structural engineers and fabricators to deliver tailored solutions that meet specific project requirements and performance specifications.
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