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Technical Specifications
Product Overview
Metallurgical Characteristics
Micro Alloy Stainless Steel features an austenitic microstructure with precisely controlled microalloying elements including molybdenum and nitrogen that enhance pitting and crevice corrosion resistance. The optimized chromium-nickel balance provides excellent formability and weldability while maintaining superior corrosion resistance in chloride environments. Grain refinement through controlled processing results in improved mechanical properties and enhanced surface finish quality.
Heat Treatment Process
MetalZenith employs solution annealing at 1050-1100°C followed by rapid cooling to achieve optimal corrosion resistance and mechanical properties. Our controlled atmosphere furnaces prevent surface oxidation and ensure uniform heating throughout the material cross-section. Post-annealing pickling and passivation treatments enhance the protective oxide layer formation.
Advanced Manufacturing Process
MetalZenith utilizes vacuum induction melting followed by electroslag remelting to achieve exceptional chemical homogeneity and cleanliness. Our multi-stage hot rolling process with controlled cooling rates optimizes the microstructure for enhanced corrosion resistance and mechanical properties. Advanced surface treatment technologies ensure superior finish quality for demanding applications.
Specialized Quality Testing
Comprehensive corrosion testing includes pitting potential measurement in 3.5% NaCl solution (ASTM G61), intergranular corrosion testing using ASTM A262 Practice E, stress corrosion cracking evaluation in boiling MgCl2 solution, and passivation film thickness analysis using X-ray photoelectron spectroscopy. Additional testing includes ferrite content measurement and grain size analysis to ensure consistent performance.
Application-Specific Considerations
For chemical equipment applications, enhanced molybdenum content provides superior resistance to pitting and crevice corrosion in acidic environments. Food industry applications benefit from smooth surface finishes and FDA-compliant composition. Medical device applications utilize the material's biocompatibility and sterilization resistance. Marine applications leverage the enhanced chloride resistance, while architectural applications benefit from the superior surface finish retention and weathering 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 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Nitrogen (N) | ≤ 0.10 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 205 |
| Tensile Strength (MPa) | 515 - 690 |
| Elongation (%) | ≥ 40 |
| Hardness (HRB) | ≤ 90 |
| Pitting Resistance (PREN) | ≥ 25 |
| Impact Energy at 20°C (J) | ≥ 60 |
🔬 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 Pickled |
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Our Advantages in Processing Micro Alloy Stainless Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes advanced vacuum induction melting and electroslag remelting processes with precise microalloying element control to achieve superior chemical homogeneity and enhanced corrosion resistance. Our controlled atmosphere processing ensures optimal grain structure and eliminates inclusions that could compromise performance.
Comprehensive Corrosion Testing Protocol
MetalZenith conducts extensive corrosion testing including pitting potential measurement (ASTM G61), intergranular corrosion testing (ASTM A262), stress corrosion cracking evaluation (ASTM G36), and passivation film thickness analysis using XPS technology. Our rigorous testing ensures superior performance in aggressive environments.
Custom Processing & Technical Support
MetalZenith offers comprehensive custom processing services including precision heat treatment, surface finishing, and specialized forming operations. Our metallurgical experts provide technical support for application-specific requirements, ensuring optimal material selection and processing parameters for each unique application.
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