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Technical Specifications
Product Overview
Metallurgical Characteristics
Microalloyed Stainless Steel features an austenitic microstructure with controlled precipitation of beneficial intermetallic phases. The strategic addition of titanium and niobium promotes grain refinement and enhances passivation film stability, while nitrogen strengthening provides superior mechanical properties without compromising corrosion resistance.
Heat Treatment Process
MetalZenith employs solution annealing at 1050-1100°C followed by rapid cooling and controlled passivation treatment. This process ensures complete dissolution of carbides, optimal grain structure, and formation of a stable, protective oxide layer essential for superior corrosion performance.
Advanced Manufacturing Process
Our manufacturing process incorporates vacuum induction melting, controlled atmosphere processing, and precision hot rolling with real-time temperature monitoring. Advanced surface finishing techniques ensure optimal surface integrity and enhanced passivation characteristics for demanding applications.
Specialized Quality Testing
MetalZenith conducts comprehensive corrosion testing including pitting potential measurement (>350mV vs SCE), intergranular corrosion testing per ASTM A262 Practice A, stress corrosion cracking evaluation in chloride environments, and passivation film thickness analysis using advanced surface characterization techniques.
Application-Specific Technical Considerations
For chemical processing applications, enhanced molybdenum content provides superior resistance to chloride-induced pitting. Food industry applications benefit from FDA-compliant composition and enhanced cleanability. Medical device applications utilize biocompatible microalloying for implant-grade performance. Marine applications leverage nitrogen strengthening for superior mechanical properties in seawater environments. Architectural applications benefit from enhanced surface finish retention and atmospheric corrosion resistance.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Chromium (Cr) | 17.0 - 20.0 |
| Nickel (Ni) | 8.0 - 12.0 |
| Molybdenum (Mo) | 2.0 - 3.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Nitrogen (N) | 0.10 - 0.22 |
| Titanium (Ti) | 0.02 - 0.08 |
| Niobium (Nb) | 0.01 - 0.05 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 300 |
| Tensile Strength (MPa) | 580 - 750 |
| Elongation (%) | ≥ 40 |
| Hardness (HRB) | ≤ 95 |
| Pitting Resistance (PREN) | ≥ 35 |
| Impact Energy at 20°C (J) | ≥ 120 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 8.0 |
| Melting Point (°C) | 1400 - 1450 |
| Thermal Conductivity (W/m·K) | 16.2 |
| Thermal Expansion (×10??/K) | 17.3 |
| Electrical Resistivity (μΩ·cm) | 72 |
| Elastic Modulus (GPa) | 200 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Bars, Tubes, Forgings, Wire |
| Thickness Range | 0.5 - 80mm |
| Width Range | 1000 - 2500mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A240, ASTM A276, EN 10088, JIS G4305 |
| Surface Finish | 2B, BA, No.4, HL, Mirror |
| Heat Treatment Condition | Solution Annealed and Passivated |
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Our Advantages in Processing Microalloyed Stainless Steel
Advanced Vacuum Induction Melting
MetalZenith employs vacuum induction melting with precise microalloying element control and controlled atmosphere processing to achieve superior chemical homogeneity and enhanced passivation characteristics. Our advanced melting technology ensures optimal distribution of microalloying elements for maximum corrosion resistance.
Comprehensive Corrosion Testing Protocol
MetalZenith conducts extensive corrosion testing including pitting potential measurement (ASTM G150), intergranular corrosion testing (ASTM A262), stress corrosion cracking evaluation (ASTM G36), and passivation film thickness analysis using XPS technology to ensure superior performance in aggressive environments.
Custom Microalloying Solutions
MetalZenith offers tailored microalloying compositions and specialized heat treatment protocols to meet specific application requirements. Our metallurgical expertise enables custom solutions for unique corrosion challenges in chemical processing, medical devices, and marine applications.
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