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Technical Specifications
Product Overview
Metallurgical Characteristics
Nickel Steel exhibits a fully austenitic microstructure with face-centered cubic crystal lattice, providing excellent ductility and toughness. The enhanced nickel content stabilizes the austenitic phase and improves corrosion resistance through formation of a stable passive chromium oxide layer. The microstructure remains stable across a wide temperature range, ensuring consistent performance in varying operating conditions.
Heat Treatment Process
MetalZenith employs solution annealing at 1050-1100°C followed by rapid cooling to achieve optimal microstructural properties. This process dissolves carbides, relieves internal stresses, and ensures maximum corrosion resistance. Post-annealing passivation treatment enhances the protective oxide layer formation.
Advanced Manufacturing Process
MetalZenith utilizes vacuum induction melting followed by argon oxygen decarburization (AOD) to achieve precise chemical composition control and minimize impurities. Our controlled rolling and annealing processes ensure uniform grain structure and optimal mechanical properties throughout the material cross-section.
Specialized Quality Testing
Comprehensive testing includes pitting potential measurement in 3.5% NaCl solution, ASTM A262 Practice A intergranular corrosion testing, stress corrosion cracking evaluation in boiling MgCl2 solution, and passivation layer thickness analysis using X-ray photoelectron spectroscopy. Additional testing includes ferrite content measurement and grain size analysis to ensure optimal microstructural properties.
Application-Specific Considerations
For chemical equipment applications, special attention is given to chloride stress corrosion cracking resistance and high-temperature oxidation resistance. Food industry applications require compliance with FDA regulations and enhanced surface finish quality. Medical device applications demand biocompatibility testing and precision dimensional control. Marine applications focus on crevice corrosion resistance and long-term durability in saltwater environments. Architectural applications emphasize aesthetic surface finishes and weathering resistance.
🧪 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 |
| Nitrogen (N) | ≤ 0.10 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 205 |
| Tensile Strength (MPa) | 515 - 690 |
| Elongation (%) | ≥ 40 |
| Hardness (HRB) | ≤ 92 |
| Corrosion Rate (mm/year) | < 0.1 in seawater |
| Pitting Potential (mV vs SCE) | > 350 |
🔬 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 304, EN 1.4301, JIS SUS304 |
| Surface Finish | 2B, BA, No.4, HL, Mirror |
| Heat Treatment Condition | Solution Annealed |
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Our Advantages in Processing Nickel Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes state-of-the-art vacuum induction melting and controlled atmosphere processing to achieve optimal nickel distribution and minimize impurities. Our precision solution annealing at 1050-1100°C ensures complete austenitic structure formation and maximum corrosion resistance.
Comprehensive Corrosion Testing
MetalZenith conducts extensive corrosion testing including pitting potential measurement (>350mV vs SCE), ASTM A262 intergranular corrosion testing, stress corrosion cracking evaluation in chloride environments, and passivation layer thickness analysis using XPS technology to ensure superior performance.
Custom Processing & Technical Support
MetalZenith offers comprehensive custom processing services including precision machining, surface finishing, and specialized heat treatments. Our technical team provides expert consultation for application-specific requirements and material selection optimization.
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