20 Years Experience | 1000+ Brand Partners | Full Customization
We have 20 years of industry experience, have partnered with over 1,000 brands, and support any customization needs.
Technical Specifications
Product Overview
Metallurgical Characteristics
Stainless steel exhibits a fully austenitic microstructure with face-centered cubic crystal lattice, providing excellent ductility and toughness. The high chromium content forms a protective passive oxide layer (Cr?O?) that self-heals when damaged, ensuring long-term corrosion resistance. Molybdenum addition enhances pitting and crevice corrosion resistance in chloride environments.
Heat Treatment Process
MetalZenith employs solution annealing at 1050-1100°C followed by rapid cooling to maintain austenitic structure and prevent carbide precipitation. Subsequent passivation treatment in nitric acid solution optimizes the protective oxide layer formation and maximizes corrosion resistance.
Advanced Manufacturing Process
Our manufacturing process includes vacuum induction melting, AOD refining, and continuous casting with controlled cooling rates. Hot rolling is performed within precise temperature ranges to maintain optimal grain structure, followed by solution annealing and surface finishing to achieve specified mechanical properties and surface quality.
Specialized Quality Testing
MetalZenith conducts comprehensive testing including pitting potential measurement per ASTM G150, intergranular corrosion testing per ASTM A262 Practice A, stress corrosion cracking evaluation in boiling MgCl? solution, and passivation film thickness analysis using X-ray photoelectron spectroscopy to ensure optimal corrosion performance.
Application-Specific Considerations
For chemical equipment applications, we optimize molybdenum content for enhanced chloride resistance. Food industry applications receive additional surface finishing and FDA compliance certification. Medical device applications undergo biocompatibility testing and precision machining. Marine applications include enhanced pitting resistance testing, while architectural applications focus on aesthetic surface finishes and weathering resistance.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Chromium (Cr) | 18.0 - 20.0 |
| Nickel (Ni) | 8.0 - 12.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Molybdenum (Mo) | 2.0 - 3.0 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 205 |
| Tensile Strength (MPa) | 515 - 690 |
| Elongation (%) | ≥ 40 |
| Hardness (HRB) | ≤ 95 |
| Corrosion Resistance | Excellent in most environments |
| Pitting Potential (mV) | ≥ 300 |
🔬 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, Fittings, Forgings |
| Thickness Range | 0.5 - 150mm |
| Width Range | 1000 - 3000mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A240, ASTM A276, AISI 316L, EN 1.4404 |
| Surface Finish | 2B, BA, No.4, No.8, Pickled & Passivated |
| Heat Treatment Condition | Solution Annealed and Passivated |
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Our Advantages in Processing Stainless Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes vacuum induction melting and argon oxygen decarburization (AOD) processes with precise temperature control to achieve optimal chemical composition and eliminate impurities. Our advanced melting technology ensures consistent austenitic microstructure and superior corrosion resistance throughout the material.
Comprehensive Corrosion Testing
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. Our rigorous testing ensures optimal performance in corrosive environments.
Custom Processing & Technical Support
MetalZenith offers comprehensive custom processing services including precision machining, specialized heat treatments, surface finishing, and passivation services. Our metallurgical experts provide technical consultation for material selection and application-specific optimization to meet unique project requirements.
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