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Technical Specifications
Product Overview
Metallurgical Characteristics
Nickel Alloy Steel exhibits a fully austenitic microstructure with enhanced nickel content providing superior corrosion resistance and mechanical stability. The controlled chromium-nickel balance ensures excellent resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride environments. The addition of molybdenum further enhances corrosion resistance in acidic media.
Heat Treatment Process
MetalZenith employs solution annealing at 1050-1100°C followed by rapid cooling to maintain the austenitic structure and prevent carbide precipitation. Subsequent passivation treatment using nitric acid solutions ensures optimal passive film formation for maximum corrosion protection.
Advanced Manufacturing Process
Our manufacturing process includes vacuum induction melting with controlled atmosphere protection, precision hot rolling with temperature monitoring, and specialized surface treatment to achieve superior surface quality and corrosion resistance. Quality control includes real-time chemical analysis and microstructural examination.
Specialized Quality Testing
MetalZenith conducts comprehensive testing including pitting potential measurement (>350mV vs SCE), intergranular corrosion testing per ASTM A262 Practice E, stress corrosion cracking evaluation in boiling MgCl2 solution, and passivation film thickness analysis using XPS technology to ensure optimal corrosion performance.
Application-Specific Considerations
For chemical equipment applications, enhanced resistance to organic acids and chlorides is verified through specialized testing. Food industry applications require FDA compliance and enhanced cleanability testing. Medical device applications undergo biocompatibility evaluation. Marine applications include seawater corrosion testing, while architectural applications focus on atmospheric corrosion resistance and aesthetic durability.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Chromium (Cr) | 17.0 - 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 |
| Pitting Resistance (PREN) | ≥ 25 |
| Impact Energy at 20°C (J) | ≥ 200 |
🔬 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 - 80mm |
| Width Range | 1000 - 2500mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A240, AISI 316L, EN 1.4404 |
| Surface Finish | 2B, BA, No.4, HL, Mirror |
| Heat Treatment Condition | Solution Annealed and Passivated |
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Our Advantages in Processing Nickel Alloy Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes vacuum induction melting with precise atmosphere control to achieve optimal nickel distribution and eliminate impurities. Our controlled cooling and solution annealing processes ensure uniform austenitic microstructure and enhanced corrosion resistance throughout the material.
Comprehensive Corrosion Testing
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 to ensure superior corrosion performance.
Custom Processing & Technical Support
MetalZenith offers comprehensive custom processing services including precision machining, specialized heat treatment, and surface finishing. Our technical team provides expert consultation for material selection and application-specific optimization to meet unique project requirements.
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