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Technical Specifications
Product Overview
Metallurgical Characteristics
X52 steel features a fine-grained ferritic-pearlitic microstructure achieved through controlled rolling and microalloying additions. The optimized carbon equivalent and careful balance of alloying elements provide excellent strength-toughness combination while maintaining superior weldability. Grain refinement through niobium and vanadium additions enhances both mechanical properties and resistance to hydrogen-induced cracking.
Heat Treatment Process
MetalZenith employs thermomechanical controlled processing (TMCP) with controlled rolling temperatures between 850-950°C followed by accelerated cooling. This process optimizes the austenite-to-ferrite transformation, resulting in fine grain structure and enhanced mechanical properties. Alternative normalization at 900-920°C may be applied for specific applications requiring stress relief.
Manufacturing Process Excellence
Our advanced manufacturing process includes continuous casting, controlled rolling with precise temperature monitoring, and accelerated cooling systems. Real-time process control ensures consistent mechanical properties and dimensional accuracy. Post-processing includes ultrasonic testing, hydrostatic testing for pipes, and comprehensive quality verification.
Specialized Quality Testing
X52 steel undergoes comprehensive testing including welding procedure qualification tests (WPQT), guided bend tests for formability assessment, rotating beam fatigue testing up to 10? cycles, and accelerated atmospheric corrosion testing in salt spray environments. Additional testing includes hydrogen-induced cracking (HIC) resistance and sulfide stress cracking (SSC) evaluation for sour service applications.
Application Engineering Considerations
For building structures and bridge construction, X52 provides excellent seismic resistance and long-term durability. In machinery manufacturing, the steel's high strength-to-weight ratio enables lighter designs without compromising performance. Vehicle manufacturing benefits from superior formability and crash energy absorption. Pipeline applications leverage the steel's pressure resistance and long-term reliability in buried and above-ground installations.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.28 |
| Manganese (Mn) | 0.90 - 1.65 |
| Silicon (Si) | ≤ 0.45 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | ≤ 0.30 |
| Nickel (Ni) | ≤ 0.30 |
| Molybdenum (Mo) | ≤ 0.15 |
| Niobium (Nb) | ≤ 0.05 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 360 |
| Tensile Strength (MPa) | 460 - 760 |
| Elongation (%) | ≥ 21 |
| Impact Energy at 0°C (J) | ≥ 27 |
| Hardness (HB) | 140 - 220 |
| Yield-to-Tensile Ratio | ≤ 0.93 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| Melting Point (°C) | 1510 - 1540 |
| Thermal Conductivity (W/m·K) | 50.2 |
| Thermal Expansion (×10??/K) | 11.8 |
| Elastic Modulus (GPa) | 207 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Pipes, Plates, Sheets, Bars, Structural Sections |
| Pipe Diameter Range | 114.3 - 1422mm (4.5" - 56") |
| Wall Thickness Range | 3.2 - 25.4mm |
| Plate Thickness Range | 6 - 80mm |
| Standards Compliance | API 5L, ASTM A106, ISO 3183, CSA Z245.1 |
| Heat Treatment Condition | As-Rolled, Normalized, or TMCP |
| End Connections | Plain End, Beveled End, Threaded, Flanged |
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Our Advantages in Processing X52 Steel
Advanced Thermomechanical Processing
MetalZenith utilizes state-of-the-art controlled rolling and accelerated cooling technology with precise temperature control to achieve optimal grain structure and enhanced mechanical properties. Our TMCP process ensures consistent strength, toughness, and weldability throughout the material thickness, critical for structural applications.
Comprehensive Structural Testing
Our X52 steel undergoes extensive testing protocols including Charpy V-notch impact testing, welding procedure qualification, bend testing for formability assessment, fatigue strength evaluation, and atmospheric corrosion resistance testing to ensure superior performance in demanding structural environments.
Custom Fabrication & Engineering Support
MetalZenith provides comprehensive custom processing services including precision cutting, forming, welding preparation, and heat treatment optimization. Our technical team offers expert consultation for structural design requirements, welding procedures, and application-specific material modifications.
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