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Technical Specifications
Product Overview
Metallurgical Characteristics
Nitralloy 135 exhibits a fully austenitic microstructure with excellent stability across a wide temperature range. The controlled addition of molybdenum enhances pitting and crevice corrosion resistance, while the balanced chromium-nickel ratio ensures optimal mechanical properties and formability. The fine-grain structure achieved through controlled processing provides superior toughness and fatigue resistance.
Heat Treatment Process
MetalZenith employs solution annealing at 1050-1100°C followed by rapid water quenching to achieve optimal corrosion resistance and mechanical properties. Post-annealing passivation treatment in nitric acid solutions ensures maximum passive film formation and enhanced corrosion protection in service environments.
Advanced Manufacturing Process
Our manufacturing process begins with vacuum induction melting to minimize inclusions and achieve precise chemical composition control. Hot rolling is performed under controlled atmosphere conditions, followed by solution annealing and descaling. Cold rolling operations utilize specialized lubricants to maintain surface quality, with final annealing and passivation ensuring optimal properties.
Specialized Quality Testing
MetalZenith conducts comprehensive testing including pitting potential measurement exceeding 350mV vs SCE, intergranular corrosion testing per ASTM A262 Practice A, stress corrosion cracking evaluation in 42% MgCl2 at 154°C, and passivation film thickness analysis using X-ray photoelectron spectroscopy to ensure superior corrosion performance.
Application-Specific Considerations
For chemical processing applications, Nitralloy 135 provides excellent resistance to organic acids and chloride environments. In food industry applications, the alloy meets FDA requirements with superior cleanability and bacterial resistance. Medical device applications benefit from biocompatibility and sterilization resistance. Marine applications utilize the enhanced pitting resistance, while architectural applications leverage the aesthetic appeal 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) | ≤ 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, Forgings, Wire |
| Thickness Range | 0.5 - 80mm |
| Width Range | 1000 - 2500mm |
| Length Range | 2000 - 12000mm |
| Standards Compliance | ASTM A240, ASTM A276, EN 10088 |
| Surface Finish | 2B, BA, No.4, HL, Mirror |
| Heat Treatment Condition | Solution Annealed and Passivated |
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Our Advantages in Processing Nitralloy 135 Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes vacuum induction melting with controlled atmosphere processing to achieve exceptional chemical homogeneity and minimize inclusions. Our precision solution annealing at 1050-1100°C followed by rapid quenching ensures optimal austenitic microstructure 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 film thickness analysis using XPS technology to ensure superior performance in aggressive conditions.
Custom Processing & Technical Support
MetalZenith offers comprehensive custom processing services including precision machining, specialized heat treatment, surface finishing, and passivation treatments. Our metallurgical experts provide technical consultation for application-specific requirements and material selection optimization.
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