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Technical Specifications
Product Overview
Metallurgical Characteristics
Nitronic 50 features a fully austenitic microstructure strengthened by controlled nitrogen addition. The nitrogen atoms occupy interstitial positions in the austenite lattice, providing solid solution strengthening while maintaining excellent ductility and toughness. The balanced chromium-nickel-manganese composition ensures stable austenite formation and prevents harmful phase precipitation during service.
Heat Treatment Process
MetalZenith employs solution annealing at 1900-2100°F (1040-1150°C) followed by rapid water quenching to retain nitrogen in solution and achieve optimal mechanical properties. Our controlled cooling process prevents carbide precipitation and maintains the homogeneous austenitic structure essential for corrosion resistance.
Advanced Manufacturing Process
MetalZenith utilizes vacuum induction melting with controlled nitrogen atmosphere to achieve precise chemical composition and minimize inclusions. Our hot rolling and cold finishing processes are optimized to maintain uniform properties while achieving excellent surface quality suitable for critical applications.
Specialized Quality Testing
Comprehensive testing protocols include pitting potential measurement exceeding 1000mV vs SCE, ASTM A262 Practice A, E intergranular corrosion testing, stress corrosion cracking evaluation per ASTM G36, and passivation film analysis using X-ray photoelectron spectroscopy to ensure superior corrosion performance in chloride environments.
Application-Specific Considerations
For chemical processing equipment, Nitronic 50 provides excellent resistance to pitting and crevice corrosion in chloride-containing media. In food industry applications, its FDA compliance and easy cleanability make it ideal for processing equipment. Medical device applications benefit from its biocompatibility and high strength-to-weight ratio. Marine applications leverage its superior resistance to seawater corrosion, while architectural applications utilize its attractive appearance and low maintenance requirements.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.06 |
| Chromium (Cr) | 21.0 - 23.0 |
| Nickel (Ni) | 11.5 - 13.5 |
| Manganese (Mn) | 4.0 - 6.0 |
| Silicon (Si) | ≤ 1.0 |
| Nitrogen (N) | 0.20 - 0.40 |
| Molybdenum (Mo) | 1.5 - 3.0 |
| Phosphorus (P) | ≤ 0.04 |
| Sulfur (S) | ≤ 0.03 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 380 |
| Tensile Strength (MPa) | 760 - 1035 |
| Elongation (%) | ≥ 35 |
| Hardness (HRB) | 95 - 102 |
| Pitting Resistance (PREN) | ≥ 34 |
| Impact Energy at RT (J) | ≥ 150 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.9 |
| Melting Point (°C) | 1400 - 1420 |
| Thermal Conductivity (W/m·K) | 14.2 |
| Thermal Expansion (×10??/K) | 16.0 |
| Electrical Resistivity (μΩ·cm) | 85 |
| Elastic Modulus (GPa) | 200 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Sheets, Bars, Rods, Pipes, Forgings |
| Thickness Range | 0.5 - 150mm |
| Width Range | 1000 - 2500mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A240, ASME SA-240, UNS S20910 |
| Heat Treatment Condition | Solution Annealed and Pickled |
| Surface Finish | 2B, BA, No.4, No.8, Custom |
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Our Advantages in Processing Nitronic 50 Stainless Steel
Advanced Nitrogen-Enhanced Processing
MetalZenith utilizes controlled vacuum melting with precise nitrogen addition and solution annealing at 1900-2100°F to achieve optimal austenitic microstructure. Our advanced processing ensures uniform nitrogen distribution and maximum strength development while maintaining excellent corrosion resistance properties.
Comprehensive Corrosion Testing Protocol
MetalZenith conducts extensive specialized testing including pitting potential measurement (>1000mV vs SCE), ASTM A262 intergranular corrosion testing, stress corrosion cracking evaluation in chloride environments, and passivation film thickness analysis using XPS technology to ensure superior corrosion performance.
Custom Fabrication & Technical Support
MetalZenith provides comprehensive custom processing services including precision machining, forming, welding consultation, and heat treatment optimization. Our metallurgical engineers offer technical support for application-specific requirements in chemical, food, medical, and marine industries.
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